./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-98.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-98.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 80aae2ad32bbd18df771bc42cd903a50a1ddb8d4ac852d86db2bbfcc1abb0bc7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:40:28,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:40:28,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:40:28,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:40:28,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:40:28,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:40:28,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:40:28,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:40:28,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:40:28,559 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:40:28,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:40:28,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:40:28,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:40:28,560 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:40:28,561 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:40:28,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:40:28,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:40:28,562 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:40:28,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:40:28,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:40:28,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:40:28,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:40:28,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:40:28,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:40:28,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:40:28,567 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:40:28,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:40:28,567 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:40:28,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:40:28,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:40:28,568 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:40:28,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:40:28,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:40:28,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:40:28,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:40:28,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:40:28,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:40:28,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:40:28,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:40:28,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:40:28,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:40:28,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:40:28,573 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80aae2ad32bbd18df771bc42cd903a50a1ddb8d4ac852d86db2bbfcc1abb0bc7 [2024-11-18 20:40:28,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:40:28,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:40:28,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:40:28,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:40:28,810 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:40:28,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-98.i [2024-11-18 20:40:30,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:40:30,268 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:40:30,269 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-98.i [2024-11-18 20:40:30,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082b15748/7882de08f7144f748706a87032fccbab/FLAG0d61f85f8 [2024-11-18 20:40:30,646 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082b15748/7882de08f7144f748706a87032fccbab [2024-11-18 20:40:30,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:40:30,652 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:40:30,653 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:40:30,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:40:30,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:40:30,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:40:30" (1/1) ... [2024-11-18 20:40:30,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1b5f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:30, skipping insertion in model container [2024-11-18 20:40:30,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:40:30" (1/1) ... [2024-11-18 20:40:30,684 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:40:30,848 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-98.i[919,932] [2024-11-18 20:40:30,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:40:30,931 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:40:30,940 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-98.i[919,932] [2024-11-18 20:40:30,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:40:31,000 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:40:31,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31 WrapperNode [2024-11-18 20:40:31,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:40:31,004 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:40:31,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:40:31,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:40:31,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,059 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 248 [2024-11-18 20:40:31,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:40:31,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:40:31,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:40:31,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:40:31,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,072 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,094 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]. [2024-11-18 20:40:31,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:40:31,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:40:31,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:40:31,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:40:31,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (1/1) ... [2024-11-18 20:40:31,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:40:31,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:40:31,168 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) [2024-11-18 20:40:31,171 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 [2024-11-18 20:40:31,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:40:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:40:31,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:40:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:40:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:40:31,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:40:31,301 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:40:31,303 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:40:31,713 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 20:40:31,714 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:40:31,732 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:40:31,732 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:40:31,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:40:31 BoogieIcfgContainer [2024-11-18 20:40:31,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:40:31,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:40:31,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:40:31,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:40:31,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:40:30" (1/3) ... [2024-11-18 20:40:31,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48826f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:40:31, skipping insertion in model container [2024-11-18 20:40:31,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:40:31" (2/3) ... [2024-11-18 20:40:31,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48826f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:40:31, skipping insertion in model container [2024-11-18 20:40:31,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:40:31" (3/3) ... [2024-11-18 20:40:31,744 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-98.i [2024-11-18 20:40:31,759 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:40:31,759 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:40:31,822 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:40:31,827 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;@4b1565bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:40:31,827 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:40:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 69 states have (on average 1.434782608695652) internal successors, (99), 70 states have internal predecessors, (99), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 20:40:31,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 20:40:31,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:40:31,856 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:40:31,857 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:40:31,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:40:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash -196601428, now seen corresponding path program 1 times [2024-11-18 20:40:31,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:40:31,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035488973] [2024-11-18 20:40:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:40:31,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:40:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:40:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 20:40:32,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:40:32,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035488973] [2024-11-18 20:40:32,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035488973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:40:32,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353083677] [2024-11-18 20:40:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:40:32,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:40:32,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:40:32,248 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) [2024-11-18 20:40:32,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 20:40:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:40:32,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:40:32,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:40:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 20:40:32,505 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:40:32,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353083677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:40:32,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:40:32,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:40:32,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030967655] [2024-11-18 20:40:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:40:32,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:40:32,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:40:32,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:40:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:40:32,562 INFO L87 Difference]: Start difference. First operand has 106 states, 69 states have (on average 1.434782608695652) internal successors, (99), 70 states have internal predecessors, (99), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 20:40:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:40:32,642 INFO L93 Difference]: Finished difference Result 203 states and 359 transitions. [2024-11-18 20:40:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:40:32,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 217 [2024-11-18 20:40:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:40:32,657 INFO L225 Difference]: With dead ends: 203 [2024-11-18 20:40:32,657 INFO L226 Difference]: Without dead ends: 100 [2024-11-18 20:40:32,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:40:32,667 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:40:32,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:40:32,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-18 20:40:32,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-18 20:40:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 64 states have (on average 1.359375) internal successors, (87), 64 states have internal predecessors, (87), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 20:40:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 155 transitions. [2024-11-18 20:40:32,712 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 155 transitions. Word has length 217 [2024-11-18 20:40:32,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:40:32,712 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 155 transitions. [2024-11-18 20:40:32,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 20:40:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 155 transitions. [2024-11-18 20:40:32,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 20:40:32,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:40:32,716 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:40:32,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 20:40:32,917 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 [2024-11-18 20:40:32,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:40:32,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:40:32,918 INFO L85 PathProgramCache]: Analyzing trace with hash 168014700, now seen corresponding path program 1 times [2024-11-18 20:40:32,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:40:32,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343715124] [2024-11-18 20:40:32,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:40:32,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:40:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:40:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:40:34,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:40:34,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343715124] [2024-11-18 20:40:34,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343715124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:40:34,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:40:34,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 20:40:34,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877497097] [2024-11-18 20:40:34,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:40:34,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 20:40:34,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:40:34,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 20:40:34,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:40:34,039 INFO L87 Difference]: Start difference. First operand 100 states and 155 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:40:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:40:34,153 INFO L93 Difference]: Finished difference Result 258 states and 402 transitions. [2024-11-18 20:40:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 20:40:34,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 217 [2024-11-18 20:40:34,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:40:34,159 INFO L225 Difference]: With dead ends: 258 [2024-11-18 20:40:34,160 INFO L226 Difference]: Without dead ends: 161 [2024-11-18 20:40:34,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:40:34,162 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 145 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:40:34,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 308 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:40:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-18 20:40:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 100. [2024-11-18 20:40:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 20:40:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 152 transitions. [2024-11-18 20:40:34,175 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 152 transitions. Word has length 217 [2024-11-18 20:40:34,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:40:34,177 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 152 transitions. [2024-11-18 20:40:34,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:40:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 152 transitions. [2024-11-18 20:40:34,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 20:40:34,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:40:34,180 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:40:34,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:40:34,180 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:40:34,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:40:34,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1520929042, now seen corresponding path program 1 times [2024-11-18 20:40:34,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:40:34,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137315246] [2024-11-18 20:40:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:40:34,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:40:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:40:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:40:34,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:40:34,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137315246] [2024-11-18 20:40:34,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137315246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:40:34,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:40:34,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:40:34,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238633956] [2024-11-18 20:40:34,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:40:34,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:40:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:40:34,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:40:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:40:34,598 INFO L87 Difference]: Start difference. First operand 100 states and 152 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:40:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:40:34,695 INFO L93 Difference]: Finished difference Result 198 states and 303 transitions. [2024-11-18 20:40:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:40:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 217 [2024-11-18 20:40:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:40:34,697 INFO L225 Difference]: With dead ends: 198 [2024-11-18 20:40:34,698 INFO L226 Difference]: Without dead ends: 101 [2024-11-18 20:40:34,698 INFO L431 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 [2024-11-18 20:40:34,699 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 145 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:40:34,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 240 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:40:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-18 20:40:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-18 20:40:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 20:40:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2024-11-18 20:40:34,719 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 153 transitions. Word has length 217 [2024-11-18 20:40:34,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:40:34,721 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 153 transitions. [2024-11-18 20:40:34,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:40:34,721 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 153 transitions. [2024-11-18 20:40:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-18 20:40:34,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:40:34,726 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:40:34,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:40:34,727 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:40:34,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:40:34,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2018340003, now seen corresponding path program 1 times [2024-11-18 20:40:34,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:40:34,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294106000] [2024-11-18 20:40:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:40:34,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:40:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:40:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:40:35,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:40:35,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294106000] [2024-11-18 20:40:35,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294106000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:40:35,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:40:35,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 20:40:35,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276899278] [2024-11-18 20:40:35,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:40:35,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 20:40:35,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:40:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 20:40:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:40:35,118 INFO L87 Difference]: Start difference. First operand 101 states and 153 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:40:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:40:35,650 INFO L93 Difference]: Finished difference Result 296 states and 452 transitions. [2024-11-18 20:40:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:40:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 218 [2024-11-18 20:40:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:40:35,653 INFO L225 Difference]: With dead ends: 296 [2024-11-18 20:40:35,653 INFO L226 Difference]: Without dead ends: 198 [2024-11-18 20:40:35,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 20:40:35,657 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 242 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:40:35,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 352 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 20:40:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-18 20:40:35,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2024-11-18 20:40:35,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 125 states have (on average 1.312) internal successors, (164), 125 states have internal predecessors, (164), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 20:40:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 300 transitions. [2024-11-18 20:40:35,690 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 300 transitions. Word has length 218 [2024-11-18 20:40:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:40:35,691 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 300 transitions. [2024-11-18 20:40:35,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:40:35,692 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 300 transitions. [2024-11-18 20:40:35,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-18 20:40:35,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:40:35,695 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:40:35,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:40:35,695 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:40:35,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:40:35,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1714432475, now seen corresponding path program 1 times [2024-11-18 20:40:35,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:40:35,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490206753] [2024-11-18 20:40:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:40:35,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:40:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:40:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:40:43,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:40:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490206753] [2024-11-18 20:40:43,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490206753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:40:43,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:40:43,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:40:43,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444516203] [2024-11-18 20:40:43,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:40:43,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:40:43,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:40:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:40:43,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:40:43,012 INFO L87 Difference]: Start difference. First operand 196 states and 300 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:40:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:40:43,693 INFO L93 Difference]: Finished difference Result 758 states and 1158 transitions. [2024-11-18 20:40:43,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:40:43,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2024-11-18 20:40:43,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:40:43,699 INFO L225 Difference]: With dead ends: 758 [2024-11-18 20:40:43,699 INFO L226 Difference]: Without dead ends: 565 [2024-11-18 20:40:43,700 INFO L431 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 [2024-11-18 20:40:43,701 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 479 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:40:43,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 395 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 20:40:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-18 20:40:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 494. [2024-11-18 20:40:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 315 states have (on average 1.3015873015873016) internal successors, (410), 317 states have internal predecessors, (410), 172 states have call successors, (172), 6 states have call predecessors, (172), 6 states have return successors, (172), 170 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-18 20:40:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 754 transitions. [2024-11-18 20:40:43,773 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 754 transitions. Word has length 219 [2024-11-18 20:40:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:40:43,774 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 754 transitions. [2024-11-18 20:40:43,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:40:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 754 transitions. [2024-11-18 20:40:43,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-18 20:40:43,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:40:43,776 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:40:43,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:40:43,776 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:40:43,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:40:43,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1559466467, now seen corresponding path program 1 times [2024-11-18 20:40:43,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:40:43,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527096914] [2024-11-18 20:40:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:40:43,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:40:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:40:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:40:44,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:40:44,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527096914] [2024-11-18 20:40:44,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527096914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:40:44,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:40:44,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 20:40:44,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046960078] [2024-11-18 20:40:44,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:40:44,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 20:40:44,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:40:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 20:40:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:40:44,036 INFO L87 Difference]: Start difference. First operand 494 states and 754 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:40:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:40:44,387 INFO L93 Difference]: Finished difference Result 1253 states and 1921 transitions. [2024-11-18 20:40:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 20:40:44,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2024-11-18 20:40:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:40:44,393 INFO L225 Difference]: With dead ends: 1253 [2024-11-18 20:40:44,394 INFO L226 Difference]: Without dead ends: 762 [2024-11-18 20:40:44,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 20:40:44,396 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 148 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:40:44,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 483 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 20:40:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-18 20:40:44,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 751. [2024-11-18 20:40:44,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 483 states have (on average 1.3064182194616978) internal successors, (631), 486 states have internal predecessors, (631), 258 states have call successors, (258), 9 states have call predecessors, (258), 9 states have return successors, (258), 255 states have call predecessors, (258), 258 states have call successors, (258) [2024-11-18 20:40:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1147 transitions. [2024-11-18 20:40:44,484 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1147 transitions. Word has length 219 [2024-11-18 20:40:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:40:44,485 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1147 transitions. [2024-11-18 20:40:44,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:40:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1147 transitions. [2024-11-18 20:40:44,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-18 20:40:44,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:40:44,487 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:40:44,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 20:40:44,487 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:40:44,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:40:44,487 INFO L85 PathProgramCache]: Analyzing trace with hash 974042959, now seen corresponding path program 1 times [2024-11-18 20:40:44,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:40:44,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365238407] [2024-11-18 20:40:44,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:40:44,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:40:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:41:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:41:57,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:41:57,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365238407] [2024-11-18 20:41:57,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365238407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:41:57,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:41:57,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 20:41:57,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705451437] [2024-11-18 20:41:57,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:41:57,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 20:41:57,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:41:57,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 20:41:57,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-18 20:41:57,333 INFO L87 Difference]: Start difference. First operand 751 states and 1147 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:42:00,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:42:00,680 INFO L93 Difference]: Finished difference Result 1823 states and 2744 transitions. [2024-11-18 20:42:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 20:42:00,681 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2024-11-18 20:42:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:42:00,687 INFO L225 Difference]: With dead ends: 1823 [2024-11-18 20:42:00,687 INFO L226 Difference]: Without dead ends: 1075 [2024-11-18 20:42:00,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2024-11-18 20:42:00,691 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 362 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:42:00,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 504 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 20:42:00,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2024-11-18 20:42:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 817. [2024-11-18 20:42:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 549 states have (on average 1.3205828779599271) internal successors, (725), 552 states have internal predecessors, (725), 258 states have call successors, (258), 9 states have call predecessors, (258), 9 states have return successors, (258), 255 states have call predecessors, (258), 258 states have call successors, (258) [2024-11-18 20:42:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1241 transitions. [2024-11-18 20:42:00,778 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1241 transitions. Word has length 219 [2024-11-18 20:42:00,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:42:00,778 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1241 transitions. [2024-11-18 20:42:00,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:42:00,779 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1241 transitions. [2024-11-18 20:42:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-18 20:42:00,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:42:00,782 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:42:00,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 20:42:00,782 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:42:00,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:42:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash -642255509, now seen corresponding path program 1 times [2024-11-18 20:42:00,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:42:00,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706825239] [2024-11-18 20:42:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:42:00,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:42:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat