./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-2.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 6792371c68eda6cfb09ed6ea574c2389b006798add32a51bdbad0bae346c339a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 04:26:49,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 04:26:49,895 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 04:26:49,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 04:26:49,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 04:26:49,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 04:26:49,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 04:26:49,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 04:26:49,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 04:26:49,921 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 04:26:49,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 04:26:49,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 04:26:49,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 04:26:49,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 04:26:49,922 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 04:26:49,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 04:26:49,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 04:26:49,923 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 04:26:49,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 04:26:49,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 04:26:49,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 04:26:49,923 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 04:26:49,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 04:26:49,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 04:26:49,924 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 04:26:49,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 04:26:49,924 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 04:26:49,924 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 04:26:49,924 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 04:26:49,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 04:26:49,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 04:26:49,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 04:26:49,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:26:49,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 04:26:49,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 04:26:49,925 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 04:26:49,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 04:26:49,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 04:26:49,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 04:26:49,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 04:26:49,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 04:26:49,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 04:26:49,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 04:26:49,925 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 -> 6792371c68eda6cfb09ed6ea574c2389b006798add32a51bdbad0bae346c339a [2025-03-17 04:26:50,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 04:26:50,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 04:26:50,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 04:26:50,155 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 04:26:50,155 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 04:26:50,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-2.i [2025-03-17 04:26:51,353 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61110d768/d60d62bcb53d44c4904d3b8ffb57a6e7/FLAG171510bb1 [2025-03-17 04:26:51,630 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 04:26:51,631 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-2.i [2025-03-17 04:26:51,643 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61110d768/d60d62bcb53d44c4904d3b8ffb57a6e7/FLAG171510bb1 [2025-03-17 04:26:51,656 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61110d768/d60d62bcb53d44c4904d3b8ffb57a6e7 [2025-03-17 04:26:51,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 04:26:51,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 04:26:51,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 04:26:51,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 04:26:51,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 04:26:51,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:51,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53da7ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51, skipping insertion in model container [2025-03-17 04:26:51,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:51,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 04:26:51,791 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-2.i[915,928] [2025-03-17 04:26:51,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:26:51,885 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 04:26:51,892 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-2.i[915,928] [2025-03-17 04:26:51,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:26:51,968 INFO L204 MainTranslator]: Completed translation [2025-03-17 04:26:51,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51 WrapperNode [2025-03-17 04:26:51,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 04:26:51,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 04:26:51,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 04:26:51,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 04:26:51,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:51,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,022 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 449 [2025-03-17 04:26:52,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 04:26:52,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 04:26:52,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 04:26:52,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 04:26:52,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,038 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,072 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]. [2025-03-17 04:26:52,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,088 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 04:26:52,114 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 04:26:52,114 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 04:26:52,114 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 04:26:52,115 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (1/1) ... [2025-03-17 04:26:52,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:26:52,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:26:52,139 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) [2025-03-17 04:26:52,143 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 [2025-03-17 04:26:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 04:26:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 04:26:52,156 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 04:26:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 04:26:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 04:26:52,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 04:26:52,233 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 04:26:52,234 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 04:26:52,879 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L359: havoc property_#t~ite37#1;havoc property_#t~ite36#1;havoc property_#t~bitwise35#1;havoc property_#t~short38#1;havoc property_#t~ite41#1;havoc property_#t~ite40#1;havoc property_#t~bitwise39#1;havoc property_#t~short42#1;havoc property_#t~ite44#1;havoc property_#t~bitwise43#1;havoc property_#t~short45#1; [2025-03-17 04:26:52,931 INFO L? ?]: Removed 49 outVars from TransFormulas that were not future-live. [2025-03-17 04:26:52,931 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 04:26:52,952 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 04:26:52,952 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 04:26:52,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:26:52 BoogieIcfgContainer [2025-03-17 04:26:52,952 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 04:26:52,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 04:26:52,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 04:26:52,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 04:26:52,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:26:51" (1/3) ... [2025-03-17 04:26:52,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf0c41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:26:52, skipping insertion in model container [2025-03-17 04:26:52,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:26:51" (2/3) ... [2025-03-17 04:26:52,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf0c41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:26:52, skipping insertion in model container [2025-03-17 04:26:52,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:26:52" (3/3) ... [2025-03-17 04:26:52,960 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-2.i [2025-03-17 04:26:52,969 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 04:26:52,971 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-2.i that has 2 procedures, 185 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 04:26:53,024 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 04:26:53,033 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;@5497e70b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 04:26:53,034 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 04:26:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 135 states have (on average 1.5333333333333334) internal successors, (207), 136 states have internal predecessors, (207), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-17 04:26:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2025-03-17 04:26:53,053 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:53,054 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:26:53,054 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:53,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:53,057 INFO L85 PathProgramCache]: Analyzing trace with hash -750921141, now seen corresponding path program 1 times [2025-03-17 04:26:53,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:53,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312829063] [2025-03-17 04:26:53,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:53,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:53,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-03-17 04:26:53,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-03-17 04:26:53,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:53,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2025-03-17 04:26:53,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:53,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312829063] [2025-03-17 04:26:53,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312829063] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:26:53,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339138366] [2025-03-17 04:26:53,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:53,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:26:53,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:26:53,442 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) [2025-03-17 04:26:53,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 04:26:53,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-03-17 04:26:53,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-03-17 04:26:53,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:53,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:53,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 04:26:53,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:26:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2025-03-17 04:26:53,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 04:26:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339138366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:26:53,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:26:53,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 04:26:53,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157060379] [2025-03-17 04:26:53,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:26:53,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 04:26:53,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:53,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 04:26:53,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:26:53,732 INFO L87 Difference]: Start difference. First operand has 185 states, 135 states have (on average 1.5333333333333334) internal successors, (207), 136 states have internal predecessors, (207), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2025-03-17 04:26:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:53,778 INFO L93 Difference]: Finished difference Result 367 states and 647 transitions. [2025-03-17 04:26:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 04:26:53,780 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) Word has length 309 [2025-03-17 04:26:53,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:53,788 INFO L225 Difference]: With dead ends: 367 [2025-03-17 04:26:53,789 INFO L226 Difference]: Without dead ends: 183 [2025-03-17 04:26:53,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:26:53,796 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:53,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:26:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-17 04:26:53,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2025-03-17 04:26:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 134 states have internal predecessors, (203), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-17 04:26:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 297 transitions. [2025-03-17 04:26:53,848 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 297 transitions. Word has length 309 [2025-03-17 04:26:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:53,849 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 297 transitions. [2025-03-17 04:26:53,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2025-03-17 04:26:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 297 transitions. [2025-03-17 04:26:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2025-03-17 04:26:53,853 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:53,853 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:26:53,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 04:26:54,054 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 [2025-03-17 04:26:54,054 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:54,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1684589510, now seen corresponding path program 1 times [2025-03-17 04:26:54,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:54,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286231573] [2025-03-17 04:26:54,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:54,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:54,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-03-17 04:26:54,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-03-17 04:26:54,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:54,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-03-17 04:26:54,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:54,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286231573] [2025-03-17 04:26:54,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286231573] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:26:54,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:26:54,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:26:54,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598409792] [2025-03-17 04:26:54,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:26:54,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:26:54,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:54,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:26:54,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:26:54,555 INFO L87 Difference]: Start difference. First operand 183 states and 297 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:26:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:54,890 INFO L93 Difference]: Finished difference Result 584 states and 942 transitions. [2025-03-17 04:26:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:26:54,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 309 [2025-03-17 04:26:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:54,896 INFO L225 Difference]: With dead ends: 584 [2025-03-17 04:26:54,897 INFO L226 Difference]: Without dead ends: 402 [2025-03-17 04:26:54,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:26:54,901 INFO L435 NwaCegarLoop]: 315 mSDtfsCounter, 369 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:54,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 864 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:26:54,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2025-03-17 04:26:54,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 362. [2025-03-17 04:26:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 265 states have (on average 1.5132075471698114) internal successors, (401), 265 states have internal predecessors, (401), 94 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-17 04:26:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 589 transitions. [2025-03-17 04:26:54,965 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 589 transitions. Word has length 309 [2025-03-17 04:26:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:54,966 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 589 transitions. [2025-03-17 04:26:54,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:26:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 589 transitions. [2025-03-17 04:26:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2025-03-17 04:26:54,972 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:54,973 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:26:54,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 04:26:54,973 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:54,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1023819307, now seen corresponding path program 1 times [2025-03-17 04:26:54,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:54,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59697797] [2025-03-17 04:26:54,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:54,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:55,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-03-17 04:26:55,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-03-17 04:26:55,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:55,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-03-17 04:26:55,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:55,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59697797] [2025-03-17 04:26:55,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59697797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:26:55,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:26:55,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:26:55,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488805370] [2025-03-17 04:26:55,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:26:55,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:26:55,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:55,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:26:55,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:26:55,688 INFO L87 Difference]: Start difference. First operand 362 states and 589 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:26:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:56,076 INFO L93 Difference]: Finished difference Result 1233 states and 1995 transitions. [2025-03-17 04:26:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:26:56,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 310 [2025-03-17 04:26:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:56,084 INFO L225 Difference]: With dead ends: 1233 [2025-03-17 04:26:56,085 INFO L226 Difference]: Without dead ends: 872 [2025-03-17 04:26:56,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:26:56,087 INFO L435 NwaCegarLoop]: 443 mSDtfsCounter, 391 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:56,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 1374 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:26:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2025-03-17 04:26:56,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 734. [2025-03-17 04:26:56,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 591 states have (on average 1.5617597292724197) internal successors, (923), 593 states have internal predecessors, (923), 138 states have call successors, (138), 4 states have call predecessors, (138), 4 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2025-03-17 04:26:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1199 transitions. [2025-03-17 04:26:56,148 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1199 transitions. Word has length 310 [2025-03-17 04:26:56,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:56,149 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 1199 transitions. [2025-03-17 04:26:56,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:26:56,149 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1199 transitions. [2025-03-17 04:26:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2025-03-17 04:26:56,152 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:56,152 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:26:56,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 04:26:56,152 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:56,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash -874614, now seen corresponding path program 1 times [2025-03-17 04:26:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:56,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537099684] [2025-03-17 04:26:56,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:56,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-03-17 04:26:56,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-03-17 04:26:56,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:56,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-03-17 04:26:57,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:57,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537099684] [2025-03-17 04:26:57,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537099684] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:26:57,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:26:57,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:26:57,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601768134] [2025-03-17 04:26:57,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:26:57,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:26:57,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:57,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:26:57,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:26:57,246 INFO L87 Difference]: Start difference. First operand 734 states and 1199 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:26:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:57,422 INFO L93 Difference]: Finished difference Result 1704 states and 2786 transitions. [2025-03-17 04:26:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:26:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 310 [2025-03-17 04:26:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:57,431 INFO L225 Difference]: With dead ends: 1704 [2025-03-17 04:26:57,431 INFO L226 Difference]: Without dead ends: 971 [2025-03-17 04:26:57,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:26:57,436 INFO L435 NwaCegarLoop]: 430 mSDtfsCounter, 376 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:57,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 948 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:26:57,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2025-03-17 04:26:57,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 849. [2025-03-17 04:26:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 706 states have (on average 1.5864022662889519) internal successors, (1120), 708 states have internal predecessors, (1120), 138 states have call successors, (138), 4 states have call predecessors, (138), 4 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2025-03-17 04:26:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1396 transitions. [2025-03-17 04:26:57,521 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1396 transitions. Word has length 310 [2025-03-17 04:26:57,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:57,524 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1396 transitions. [2025-03-17 04:26:57,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:26:57,524 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1396 transitions. [2025-03-17 04:26:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-03-17 04:26:57,527 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:57,527 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:26:57,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 04:26:57,528 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:57,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:57,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1589687620, now seen corresponding path program 1 times [2025-03-17 04:26:57,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:57,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745152243] [2025-03-17 04:26:57,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:57,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:57,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:26:57,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:26:57,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:57,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-03-17 04:26:58,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:58,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745152243] [2025-03-17 04:26:58,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745152243] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:26:58,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:26:58,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 04:26:58,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686189362] [2025-03-17 04:26:58,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:26:58,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 04:26:58,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:58,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 04:26:58,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:26:58,312 INFO L87 Difference]: Start difference. First operand 849 states and 1396 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:26:58,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:58,954 INFO L93 Difference]: Finished difference Result 2691 states and 4397 transitions. [2025-03-17 04:26:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 04:26:58,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 311 [2025-03-17 04:26:58,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:59,008 INFO L225 Difference]: With dead ends: 2691 [2025-03-17 04:26:59,013 INFO L226 Difference]: Without dead ends: 1843 [2025-03-17 04:26:59,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2025-03-17 04:26:59,018 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 612 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:59,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1223 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 04:26:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2025-03-17 04:26:59,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1294. [2025-03-17 04:26:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1102 states have (on average 1.5952813067150635) internal successors, (1758), 1104 states have internal predecessors, (1758), 185 states have call successors, (185), 6 states have call predecessors, (185), 6 states have return successors, (185), 183 states have call predecessors, (185), 185 states have call successors, (185) [2025-03-17 04:26:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 2128 transitions. [2025-03-17 04:26:59,151 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 2128 transitions. Word has length 311 [2025-03-17 04:26:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:59,151 INFO L471 AbstractCegarLoop]: Abstraction has 1294 states and 2128 transitions. [2025-03-17 04:26:59,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:26:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 2128 transitions. [2025-03-17 04:26:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-03-17 04:26:59,155 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:59,155 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:26:59,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 04:26:59,155 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:59,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:59,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1752174235, now seen corresponding path program 1 times [2025-03-17 04:26:59,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:59,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724324367] [2025-03-17 04:26:59,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:59,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:59,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:26:59,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:26:59,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:26:59,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:26:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-03-17 04:26:59,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:26:59,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724324367] [2025-03-17 04:26:59,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724324367] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:26:59,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:26:59,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:26:59,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606546941] [2025-03-17 04:26:59,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:26:59,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:26:59,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:59,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:26:59,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:26:59,588 INFO L87 Difference]: Start difference. First operand 1294 states and 2128 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, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:26:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:26:59,839 INFO L93 Difference]: Finished difference Result 2963 states and 4839 transitions. [2025-03-17 04:26:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:26:59,839 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, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 311 [2025-03-17 04:26:59,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:26:59,848 INFO L225 Difference]: With dead ends: 2963 [2025-03-17 04:26:59,848 INFO L226 Difference]: Without dead ends: 2055 [2025-03-17 04:26:59,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:26:59,851 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 457 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:26:59,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 736 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:26:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2025-03-17 04:26:59,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 1749. [2025-03-17 04:26:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1486 states have (on average 1.5868102288021535) internal successors, (2358), 1489 states have internal predecessors, (2358), 254 states have call successors, (254), 8 states have call predecessors, (254), 8 states have return successors, (254), 251 states have call predecessors, (254), 254 states have call successors, (254) [2025-03-17 04:26:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2866 transitions. [2025-03-17 04:26:59,947 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2866 transitions. Word has length 311 [2025-03-17 04:26:59,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:26:59,947 INFO L471 AbstractCegarLoop]: Abstraction has 1749 states and 2866 transitions. [2025-03-17 04:26:59,947 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, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:26:59,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2866 transitions. [2025-03-17 04:26:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-03-17 04:26:59,951 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:26:59,951 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:26:59,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 04:26:59,951 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:26:59,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:26:59,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1278180634, now seen corresponding path program 1 times [2025-03-17 04:26:59,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:26:59,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77359066] [2025-03-17 04:26:59,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:26:59,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:26:59,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:27:00,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:27:00,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:00,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-03-17 04:27:00,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:00,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77359066] [2025-03-17 04:27:00,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77359066] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:00,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:00,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:27:00,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495727598] [2025-03-17 04:27:00,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:00,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:27:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:00,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:27:00,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:27:00,428 INFO L87 Difference]: Start difference. First operand 1749 states and 2866 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, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:27:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:00,847 INFO L93 Difference]: Finished difference Result 3226 states and 5262 transitions. [2025-03-17 04:27:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:27:00,848 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, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 311 [2025-03-17 04:27:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:00,858 INFO L225 Difference]: With dead ends: 3226 [2025-03-17 04:27:00,858 INFO L226 Difference]: Without dead ends: 1940 [2025-03-17 04:27:00,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:27:00,862 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 457 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:00,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 935 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:27:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2025-03-17 04:27:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1749. [2025-03-17 04:27:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1486 states have (on average 1.5847913862718708) internal successors, (2355), 1489 states have internal predecessors, (2355), 254 states have call successors, (254), 8 states have call predecessors, (254), 8 states have return successors, (254), 251 states have call predecessors, (254), 254 states have call successors, (254) [2025-03-17 04:27:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2863 transitions. [2025-03-17 04:27:00,971 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2863 transitions. Word has length 311 [2025-03-17 04:27:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:00,971 INFO L471 AbstractCegarLoop]: Abstraction has 1749 states and 2863 transitions. [2025-03-17 04:27:00,971 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, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:27:00,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2863 transitions. [2025-03-17 04:27:00,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-03-17 04:27:00,975 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:00,976 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:00,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 04:27:00,976 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:00,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1247160827, now seen corresponding path program 1 times [2025-03-17 04:27:00,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:00,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440860655] [2025-03-17 04:27:00,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:00,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:00,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:27:01,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:27:01,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:01,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 63 proven. 75 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2025-03-17 04:27:01,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440860655] [2025-03-17 04:27:01,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440860655] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884202960] [2025-03-17 04:27:01,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:01,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:01,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:01,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:27:01,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 04:27:01,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:27:01,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:27:01,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:01,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:01,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 04:27:01,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:27:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2188 proven. 75 refuted. 0 times theorem prover too weak. 2061 trivial. 0 not checked. [2025-03-17 04:27:01,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:27:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 63 proven. 75 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2025-03-17 04:27:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884202960] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:27:02,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:27:02,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-17 04:27:02,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111510031] [2025-03-17 04:27:02,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:27:02,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 04:27:02,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:02,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 04:27:02,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 04:27:02,192 INFO L87 Difference]: Start difference. First operand 1749 states and 2863 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2025-03-17 04:27:02,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:02,492 INFO L93 Difference]: Finished difference Result 2531 states and 4135 transitions. [2025-03-17 04:27:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 04:27:02,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 311 [2025-03-17 04:27:02,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:02,498 INFO L225 Difference]: With dead ends: 2531 [2025-03-17 04:27:02,498 INFO L226 Difference]: Without dead ends: 1153 [2025-03-17 04:27:02,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-17 04:27:02,500 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 569 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:02,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 617 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:27:02,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2025-03-17 04:27:02,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1128. [2025-03-17 04:27:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 958 states have (on average 1.5991649269311066) internal successors, (1532), 959 states have internal predecessors, (1532), 161 states have call successors, (161), 8 states have call predecessors, (161), 8 states have return successors, (161), 160 states have call predecessors, (161), 161 states have call successors, (161) [2025-03-17 04:27:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1854 transitions. [2025-03-17 04:27:02,546 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1854 transitions. Word has length 311 [2025-03-17 04:27:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:02,546 INFO L471 AbstractCegarLoop]: Abstraction has 1128 states and 1854 transitions. [2025-03-17 04:27:02,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (72), 2 states have call predecessors, (72), 4 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2025-03-17 04:27:02,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1854 transitions. [2025-03-17 04:27:02,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-03-17 04:27:02,549 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:02,550 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:02,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 04:27:02,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-17 04:27:02,750 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:02,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:02,751 INFO L85 PathProgramCache]: Analyzing trace with hash 842052582, now seen corresponding path program 1 times [2025-03-17 04:27:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:02,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255940108] [2025-03-17 04:27:02,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:02,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:02,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:27:03,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:27:03,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:03,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:03,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 63 proven. 75 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2025-03-17 04:27:03,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:03,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255940108] [2025-03-17 04:27:03,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255940108] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:03,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442144195] [2025-03-17 04:27:03,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:03,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:03,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:03,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:27:03,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 04:27:03,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:27:03,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:27:03,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:03,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:03,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 04:27:03,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:27:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2203 proven. 132 refuted. 0 times theorem prover too weak. 1989 trivial. 0 not checked. [2025-03-17 04:27:04,345 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:27:04,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 63 proven. 75 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2025-03-17 04:27:04,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442144195] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:27:04,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:27:04,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 15 [2025-03-17 04:27:04,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859984072] [2025-03-17 04:27:04,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:27:04,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 04:27:04,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:04,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 04:27:04,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2025-03-17 04:27:04,684 INFO L87 Difference]: Start difference. First operand 1128 states and 1854 transitions. Second operand has 15 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 2 states have call successors, (72), 2 states have call predecessors, (72), 5 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2025-03-17 04:27:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:05,274 INFO L93 Difference]: Finished difference Result 1735 states and 2805 transitions. [2025-03-17 04:27:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 04:27:05,274 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 2 states have call successors, (72), 2 states have call predecessors, (72), 5 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 311 [2025-03-17 04:27:05,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:05,279 INFO L225 Difference]: With dead ends: 1735 [2025-03-17 04:27:05,279 INFO L226 Difference]: Without dead ends: 833 [2025-03-17 04:27:05,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 616 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2025-03-17 04:27:05,282 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 433 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:05,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 546 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 04:27:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2025-03-17 04:27:05,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 769. [2025-03-17 04:27:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 596 states have (on average 1.4865771812080537) internal successors, (886), 597 states have internal predecessors, (886), 161 states have call successors, (161), 11 states have call predecessors, (161), 11 states have return successors, (161), 160 states have call predecessors, (161), 161 states have call successors, (161) [2025-03-17 04:27:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1208 transitions. [2025-03-17 04:27:05,336 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1208 transitions. Word has length 311 [2025-03-17 04:27:05,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:05,336 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1208 transitions. [2025-03-17 04:27:05,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 2 states have call successors, (72), 2 states have call predecessors, (72), 5 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2025-03-17 04:27:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1208 transitions. [2025-03-17 04:27:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-03-17 04:27:05,339 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:05,339 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:05,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 04:27:05,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:05,544 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:05,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1316046183, now seen corresponding path program 1 times [2025-03-17 04:27:05,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:05,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623472712] [2025-03-17 04:27:05,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:05,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:05,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:27:05,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:27:05,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:05,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2025-03-17 04:27:06,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:06,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623472712] [2025-03-17 04:27:06,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623472712] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:06,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:06,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:27:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446794106] [2025-03-17 04:27:06,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:06,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:27:06,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:06,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:27:06,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:27:06,252 INFO L87 Difference]: Start difference. First operand 769 states and 1208 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, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:27:06,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:06,367 INFO L93 Difference]: Finished difference Result 1510 states and 2381 transitions. [2025-03-17 04:27:06,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:27:06,368 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, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 311 [2025-03-17 04:27:06,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:06,372 INFO L225 Difference]: With dead ends: 1510 [2025-03-17 04:27:06,372 INFO L226 Difference]: Without dead ends: 901 [2025-03-17 04:27:06,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:27:06,374 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 125 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:06,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 614 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:27:06,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2025-03-17 04:27:06,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 765. [2025-03-17 04:27:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 592 states have (on average 1.4695945945945945) internal successors, (870), 593 states have internal predecessors, (870), 161 states have call successors, (161), 11 states have call predecessors, (161), 11 states have return successors, (161), 160 states have call predecessors, (161), 161 states have call successors, (161) [2025-03-17 04:27:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1192 transitions. [2025-03-17 04:27:06,410 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1192 transitions. Word has length 311 [2025-03-17 04:27:06,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:06,411 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 1192 transitions. [2025-03-17 04:27:06,411 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, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2025-03-17 04:27:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1192 transitions. [2025-03-17 04:27:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-03-17 04:27:06,413 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:06,414 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:06,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 04:27:06,414 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:06,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:06,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1347065990, now seen corresponding path program 1 times [2025-03-17 04:27:06,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:06,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450412565] [2025-03-17 04:27:06,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:06,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:06,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:27:06,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:27:06,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:06,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 225 proven. 45 refuted. 0 times theorem prover too weak. 4054 trivial. 0 not checked. [2025-03-17 04:27:07,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:07,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450412565] [2025-03-17 04:27:07,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450412565] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:07,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629328943] [2025-03-17 04:27:07,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:07,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:07,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:07,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:27:07,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 04:27:07,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:27:07,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:27:07,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:07,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:07,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-17 04:27:07,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:27:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2148 proven. 102 refuted. 0 times theorem prover too weak. 2074 trivial. 0 not checked. [2025-03-17 04:27:09,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:27:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629328943] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:10,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 04:27:10,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18] total 27 [2025-03-17 04:27:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965805693] [2025-03-17 04:27:10,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 04:27:10,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-17 04:27:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:10,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-17 04:27:10,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2025-03-17 04:27:10,589 INFO L87 Difference]: Start difference. First operand 765 states and 1192 transitions. Second operand has 27 states, 26 states have (on average 5.461538461538462) internal successors, (142), 25 states have internal predecessors, (142), 11 states have call successors, (94), 7 states have call predecessors, (94), 11 states have return successors, (94), 10 states have call predecessors, (94), 11 states have call successors, (94) [2025-03-17 04:27:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:12,469 INFO L93 Difference]: Finished difference Result 1673 states and 2581 transitions. [2025-03-17 04:27:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-17 04:27:12,470 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.461538461538462) internal successors, (142), 25 states have internal predecessors, (142), 11 states have call successors, (94), 7 states have call predecessors, (94), 11 states have return successors, (94), 10 states have call predecessors, (94), 11 states have call successors, (94) Word has length 311 [2025-03-17 04:27:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:12,476 INFO L225 Difference]: With dead ends: 1673 [2025-03-17 04:27:12,476 INFO L226 Difference]: Without dead ends: 1005 [2025-03-17 04:27:12,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=962, Invalid=2944, Unknown=0, NotChecked=0, Total=3906 [2025-03-17 04:27:12,480 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 747 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:12,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 2528 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 04:27:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2025-03-17 04:27:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 950. [2025-03-17 04:27:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 770 states have (on average 1.4844155844155844) internal successors, (1143), 771 states have internal predecessors, (1143), 161 states have call successors, (161), 18 states have call predecessors, (161), 18 states have return successors, (161), 160 states have call predecessors, (161), 161 states have call successors, (161) [2025-03-17 04:27:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1465 transitions. [2025-03-17 04:27:12,528 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1465 transitions. Word has length 311 [2025-03-17 04:27:12,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:12,529 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1465 transitions. [2025-03-17 04:27:12,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.461538461538462) internal successors, (142), 25 states have internal predecessors, (142), 11 states have call successors, (94), 7 states have call predecessors, (94), 11 states have return successors, (94), 10 states have call predecessors, (94), 11 states have call successors, (94) [2025-03-17 04:27:12,529 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1465 transitions. [2025-03-17 04:27:12,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2025-03-17 04:27:12,548 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:12,548 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:12,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 04:27:12,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:12,749 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:12,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:12,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2012153158, now seen corresponding path program 1 times [2025-03-17 04:27:12,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:12,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548739713] [2025-03-17 04:27:12,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:12,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:12,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-03-17 04:27:13,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-03-17 04:27:13,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:13,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 120 proven. 396 refuted. 0 times theorem prover too weak. 3808 trivial. 0 not checked. [2025-03-17 04:27:16,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548739713] [2025-03-17 04:27:16,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548739713] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:16,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576390696] [2025-03-17 04:27:16,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:16,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:16,542 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:27:16,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 04:27:16,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-03-17 04:27:16,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-03-17 04:27:16,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:16,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:16,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-03-17 04:27:16,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:27:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 2312 proven. 750 refuted. 0 times theorem prover too weak. 1262 trivial. 0 not checked. [2025-03-17 04:27:25,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:28:20,383 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)