./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 78a4cc43ce1234c075e2c73cca2f6f44edddfccbee7278c746f2db07d17136bf --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 15:37:23,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 15:37:23,233 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 15:37:23,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 15:37:23,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 15:37:23,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 15:37:23,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 15:37:23,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 15:37:23,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 15:37:23,273 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 15:37:23,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 15:37:23,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 15:37:23,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 15:37:23,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 15:37:23,278 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 15:37:23,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 15:37:23,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 15:37:23,279 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 15:37:23,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 15:37:23,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 15:37:23,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 15:37:23,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 15:37:23,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 15:37:23,281 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 15:37:23,281 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 15:37:23,281 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 15:37:23,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 15:37:23,282 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 15:37:23,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 15:37:23,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 15:37:23,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 15:37:23,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 15:37:23,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:37:23,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 15:37:23,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 15:37:23,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 15:37:23,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 15:37:23,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 15:37:23,285 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 15:37:23,286 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 15:37:23,286 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 15:37:23,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 15:37:23,287 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78a4cc43ce1234c075e2c73cca2f6f44edddfccbee7278c746f2db07d17136bf Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 15:37:23,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 15:37:23,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 15:37:23,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 15:37:23,566 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 15:37:23,566 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 15:37:23,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c [2024-09-18 15:37:24,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 15:37:25,163 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 15:37:25,164 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c [2024-09-18 15:37:25,181 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/cc0782712/f1bbe77e328e46fb8b17617b318cd369/FLAG5637d3917 [2024-09-18 15:37:25,194 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/cc0782712/f1bbe77e328e46fb8b17617b318cd369 [2024-09-18 15:37:25,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 15:37:25,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 15:37:25,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 15:37:25,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 15:37:25,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 15:37:25,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413fc68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25, skipping insertion in model container [2024-09-18 15:37:25,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,250 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 15:37:25,431 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2024-09-18 15:37:25,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:37:25,493 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 15:37:25,525 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gj2007.c.i.p+nlh-reducer.c[6448,6461] [2024-09-18 15:37:25,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:37:25,578 INFO L204 MainTranslator]: Completed translation [2024-09-18 15:37:25,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25 WrapperNode [2024-09-18 15:37:25,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 15:37:25,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 15:37:25,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 15:37:25,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 15:37:25,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,611 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 15:37:25,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 15:37:25,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 15:37:25,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 15:37:25,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 15:37:25,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,626 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,643 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]. [2024-09-18 15:37:25,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,677 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 15:37:25,678 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 15:37:25,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 15:37:25,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 15:37:25,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (1/1) ... [2024-09-18 15:37:25,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:37:25,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:25,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-18 15:37:25,725 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-18 15:37:25,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 15:37:25,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 15:37:25,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 15:37:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 15:37:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 15:37:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 15:37:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 15:37:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 15:37:25,875 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 15:37:25,878 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 15:37:26,466 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-09-18 15:37:26,467 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 15:37:26,491 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 15:37:26,492 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-18 15:37:26,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:37:26 BoogieIcfgContainer [2024-09-18 15:37:26,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 15:37:26,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 15:37:26,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 15:37:26,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 15:37:26,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:37:25" (1/3) ... [2024-09-18 15:37:26,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697b6960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:37:26, skipping insertion in model container [2024-09-18 15:37:26,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:37:25" (2/3) ... [2024-09-18 15:37:26,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697b6960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:37:26, skipping insertion in model container [2024-09-18 15:37:26,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:37:26" (3/3) ... [2024-09-18 15:37:26,500 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+nlh-reducer.c [2024-09-18 15:37:26,516 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 15:37:26,516 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 15:37:26,583 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 15:37:26,593 INFO L336 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=All, 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;@725195d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 15:37:26,594 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 15:37:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 142 states have (on average 1.971830985915493) internal successors, (280), 143 states have internal predecessors, (280), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-18 15:37:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:26,615 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:26,617 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:26,618 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:26,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:26,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1593263039, now seen corresponding path program 1 times [2024-09-18 15:37:26,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:26,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679570282] [2024-09-18 15:37:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:26,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:27,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:27,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:27,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679570282] [2024-09-18 15:37:27,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679570282] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:27,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:27,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-18 15:37:27,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851020799] [2024-09-18 15:37:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:27,153 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-18 15:37:27,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:27,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-18 15:37:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-18 15:37:27,178 INFO L87 Difference]: Start difference. First operand has 148 states, 142 states have (on average 1.971830985915493) internal successors, (280), 143 states have internal predecessors, (280), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:27,768 INFO L93 Difference]: Finished difference Result 291 states and 561 transitions. [2024-09-18 15:37:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-18 15:37:27,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:27,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:27,779 INFO L225 Difference]: With dead ends: 291 [2024-09-18 15:37:27,779 INFO L226 Difference]: Without dead ends: 144 [2024-09-18 15:37:27,782 INFO L433 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 [2024-09-18 15:37:27,785 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 274 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:27,786 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 11 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:37:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-18 15:37:27,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-18 15:37:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.4857142857142858) internal successors, (208), 140 states have internal predecessors, (208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2024-09-18 15:37:27,859 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 142 [2024-09-18 15:37:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:27,861 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2024-09-18 15:37:27,861 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:27,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2024-09-18 15:37:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:27,864 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:27,865 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:27,866 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 15:37:27,866 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:27,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash -693514170, now seen corresponding path program 1 times [2024-09-18 15:37:27,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:27,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558810197] [2024-09-18 15:37:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:27,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:28,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:28,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:28,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558810197] [2024-09-18 15:37:28,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558810197] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:28,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:28,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-18 15:37:28,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517077725] [2024-09-18 15:37:28,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:28,142 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-18 15:37:28,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:28,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-18 15:37:28,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-18 15:37:28,145 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:28,711 INFO L93 Difference]: Finished difference Result 409 states and 608 transitions. [2024-09-18 15:37:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-18 15:37:28,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:28,714 INFO L225 Difference]: With dead ends: 409 [2024-09-18 15:37:28,715 INFO L226 Difference]: Without dead ends: 276 [2024-09-18 15:37:28,716 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:37:28,717 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 399 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:28,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 7 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:37:28,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-09-18 15:37:28,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2024-09-18 15:37:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 272 states have (on average 1.2536764705882353) internal successors, (341), 272 states have internal predecessors, (341), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 344 transitions. [2024-09-18 15:37:28,756 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 344 transitions. Word has length 142 [2024-09-18 15:37:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:28,757 INFO L474 AbstractCegarLoop]: Abstraction has 276 states and 344 transitions. [2024-09-18 15:37:28,757 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:28,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 344 transitions. [2024-09-18 15:37:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:28,760 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:28,760 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:28,761 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 15:37:28,761 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:28,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:28,761 INFO L85 PathProgramCache]: Analyzing trace with hash -304606969, now seen corresponding path program 1 times [2024-09-18 15:37:28,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:28,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208926621] [2024-09-18 15:37:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:28,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:29,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:29,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:29,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208926621] [2024-09-18 15:37:29,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208926621] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:29,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:29,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-18 15:37:29,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70409257] [2024-09-18 15:37:29,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:29,025 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-18 15:37:29,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:29,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-18 15:37:29,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-09-18 15:37:29,026 INFO L87 Difference]: Start difference. First operand 276 states and 344 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:29,571 INFO L93 Difference]: Finished difference Result 403 states and 471 transitions. [2024-09-18 15:37:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-18 15:37:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:29,574 INFO L225 Difference]: With dead ends: 403 [2024-09-18 15:37:29,574 INFO L226 Difference]: Without dead ends: 268 [2024-09-18 15:37:29,575 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2024-09-18 15:37:29,577 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 203 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:29,579 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 13 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:37:29,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-09-18 15:37:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-09-18 15:37:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 264 states have (on average 1.246212121212121) internal successors, (329), 264 states have internal predecessors, (329), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 332 transitions. [2024-09-18 15:37:29,620 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 332 transitions. Word has length 142 [2024-09-18 15:37:29,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:29,620 INFO L474 AbstractCegarLoop]: Abstraction has 268 states and 332 transitions. [2024-09-18 15:37:29,620 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 7 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:29,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 332 transitions. [2024-09-18 15:37:29,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:29,623 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:29,623 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:29,623 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-18 15:37:29,624 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:29,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:29,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1846341478, now seen corresponding path program 1 times [2024-09-18 15:37:29,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:29,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979162953] [2024-09-18 15:37:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:29,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:29,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:29,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:29,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979162953] [2024-09-18 15:37:29,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979162953] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:29,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:29,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-18 15:37:29,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815109122] [2024-09-18 15:37:29,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:29,827 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-18 15:37:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:29,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-18 15:37:29,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-09-18 15:37:29,828 INFO L87 Difference]: Start difference. First operand 268 states and 332 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:30,270 INFO L93 Difference]: Finished difference Result 393 states and 457 transitions. [2024-09-18 15:37:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-18 15:37:30,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:30,273 INFO L225 Difference]: With dead ends: 393 [2024-09-18 15:37:30,273 INFO L226 Difference]: Without dead ends: 266 [2024-09-18 15:37:30,275 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2024-09-18 15:37:30,276 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 202 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:30,278 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 10 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:37:30,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-09-18 15:37:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-09-18 15:37:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 262 states have (on average 1.2442748091603053) internal successors, (326), 262 states have internal predecessors, (326), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 329 transitions. [2024-09-18 15:37:30,325 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 329 transitions. Word has length 142 [2024-09-18 15:37:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:30,326 INFO L474 AbstractCegarLoop]: Abstraction has 266 states and 329 transitions. [2024-09-18 15:37:30,327 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:30,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 329 transitions. [2024-09-18 15:37:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:30,330 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:30,330 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:30,330 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-18 15:37:30,331 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:30,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:30,331 INFO L85 PathProgramCache]: Analyzing trace with hash -465074757, now seen corresponding path program 1 times [2024-09-18 15:37:30,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:30,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943433381] [2024-09-18 15:37:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:30,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:30,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:30,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943433381] [2024-09-18 15:37:30,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943433381] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:30,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:30,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-18 15:37:30,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355267212] [2024-09-18 15:37:30,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:30,541 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-18 15:37:30,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:30,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-18 15:37:30,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-09-18 15:37:30,542 INFO L87 Difference]: Start difference. First operand 266 states and 329 transitions. Second operand has 10 states, 10 states have (on average 13.9) internal successors, (139), 9 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:31,054 INFO L93 Difference]: Finished difference Result 389 states and 452 transitions. [2024-09-18 15:37:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-18 15:37:31,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 9 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:31,056 INFO L225 Difference]: With dead ends: 389 [2024-09-18 15:37:31,057 INFO L226 Difference]: Without dead ends: 264 [2024-09-18 15:37:31,057 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2024-09-18 15:37:31,058 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 201 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:31,059 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 13 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:37:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-18 15:37:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-18 15:37:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 260 states have (on average 1.2423076923076923) internal successors, (323), 260 states have internal predecessors, (323), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2024-09-18 15:37:31,082 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 142 [2024-09-18 15:37:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:31,083 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2024-09-18 15:37:31,083 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 9 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:31,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2024-09-18 15:37:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:31,085 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:31,085 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:31,086 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-18 15:37:31,086 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:31,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:31,086 INFO L85 PathProgramCache]: Analyzing trace with hash 890455678, now seen corresponding path program 1 times [2024-09-18 15:37:31,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:31,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787109688] [2024-09-18 15:37:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:31,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:31,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:31,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:31,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787109688] [2024-09-18 15:37:31,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787109688] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:31,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:31,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-09-18 15:37:31,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716820979] [2024-09-18 15:37:31,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:31,386 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-18 15:37:31,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:31,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-18 15:37:31,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-09-18 15:37:31,387 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 12 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:31,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:31,966 INFO L93 Difference]: Finished difference Result 381 states and 443 transitions. [2024-09-18 15:37:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-18 15:37:31,967 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 12 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:31,969 INFO L225 Difference]: With dead ends: 381 [2024-09-18 15:37:31,969 INFO L226 Difference]: Without dead ends: 258 [2024-09-18 15:37:31,970 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2024-09-18 15:37:31,971 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 198 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:31,971 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 13 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:37:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-09-18 15:37:31,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-09-18 15:37:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 254 states have (on average 1.236220472440945) internal successors, (314), 254 states have internal predecessors, (314), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:31,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 317 transitions. [2024-09-18 15:37:31,995 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 317 transitions. Word has length 142 [2024-09-18 15:37:31,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:31,995 INFO L474 AbstractCegarLoop]: Abstraction has 258 states and 317 transitions. [2024-09-18 15:37:31,996 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 12 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:31,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 317 transitions. [2024-09-18 15:37:31,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:31,998 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:31,999 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:31,999 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-18 15:37:31,999 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:31,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:31,999 INFO L85 PathProgramCache]: Analyzing trace with hash -150385202, now seen corresponding path program 1 times [2024-09-18 15:37:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:32,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606879647] [2024-09-18 15:37:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:32,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:32,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:32,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606879647] [2024-09-18 15:37:32,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606879647] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:32,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:32,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-09-18 15:37:32,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986045472] [2024-09-18 15:37:32,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:32,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-18 15:37:32,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:32,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-18 15:37:32,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2024-09-18 15:37:32,307 INFO L87 Difference]: Start difference. First operand 258 states and 317 transitions. Second operand has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 14 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:32,937 INFO L93 Difference]: Finished difference Result 371 states and 430 transitions. [2024-09-18 15:37:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-18 15:37:32,938 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 14 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:32,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:32,940 INFO L225 Difference]: With dead ends: 371 [2024-09-18 15:37:32,940 INFO L226 Difference]: Without dead ends: 254 [2024-09-18 15:37:32,941 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2024-09-18 15:37:32,942 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 196 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:32,942 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 16 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:37:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-09-18 15:37:32,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-09-18 15:37:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 1.232) internal successors, (308), 250 states have internal predecessors, (308), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 311 transitions. [2024-09-18 15:37:32,961 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 311 transitions. Word has length 142 [2024-09-18 15:37:32,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:32,962 INFO L474 AbstractCegarLoop]: Abstraction has 254 states and 311 transitions. [2024-09-18 15:37:32,962 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 14 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:32,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 311 transitions. [2024-09-18 15:37:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:32,964 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:32,964 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:32,964 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-18 15:37:32,964 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:32,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash -603862297, now seen corresponding path program 1 times [2024-09-18 15:37:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:32,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331416705] [2024-09-18 15:37:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:32,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:33,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:33,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:33,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331416705] [2024-09-18 15:37:33,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331416705] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:33,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:33,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-09-18 15:37:33,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361990161] [2024-09-18 15:37:33,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:33,300 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-18 15:37:33,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:33,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-18 15:37:33,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2024-09-18 15:37:33,302 INFO L87 Difference]: Start difference. First operand 254 states and 311 transitions. Second operand has 16 states, 16 states have (on average 8.6875) internal successors, (139), 15 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:33,955 INFO L93 Difference]: Finished difference Result 365 states and 422 transitions. [2024-09-18 15:37:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-18 15:37:33,956 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 15 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:33,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:33,958 INFO L225 Difference]: With dead ends: 365 [2024-09-18 15:37:33,958 INFO L226 Difference]: Without dead ends: 252 [2024-09-18 15:37:33,959 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2024-09-18 15:37:33,960 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 195 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:33,960 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 16 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:37:33,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-09-18 15:37:33,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-09-18 15:37:33,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 248 states have (on average 1.2298387096774193) internal successors, (305), 248 states have internal predecessors, (305), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:33,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 308 transitions. [2024-09-18 15:37:33,976 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 308 transitions. Word has length 142 [2024-09-18 15:37:33,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:33,979 INFO L474 AbstractCegarLoop]: Abstraction has 252 states and 308 transitions. [2024-09-18 15:37:33,979 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 15 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:33,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:33,980 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 308 transitions. [2024-09-18 15:37:33,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:33,981 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:33,981 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:33,982 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-18 15:37:33,982 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:33,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:33,982 INFO L85 PathProgramCache]: Analyzing trace with hash -411238661, now seen corresponding path program 1 times [2024-09-18 15:37:33,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:33,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783151613] [2024-09-18 15:37:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:33,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:34,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:34,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783151613] [2024-09-18 15:37:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783151613] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:34,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:34,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-09-18 15:37:34,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130336176] [2024-09-18 15:37:34,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:34,335 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-18 15:37:34,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:34,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-18 15:37:34,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2024-09-18 15:37:34,337 INFO L87 Difference]: Start difference. First operand 252 states and 308 transitions. Second operand has 18 states, 18 states have (on average 7.722222222222222) internal successors, (139), 17 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:34,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:34,955 INFO L93 Difference]: Finished difference Result 359 states and 415 transitions. [2024-09-18 15:37:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-18 15:37:34,956 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.722222222222222) internal successors, (139), 17 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:34,958 INFO L225 Difference]: With dead ends: 359 [2024-09-18 15:37:34,958 INFO L226 Difference]: Without dead ends: 248 [2024-09-18 15:37:34,959 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2024-09-18 15:37:34,960 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 193 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:34,960 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 16 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:37:34,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-18 15:37:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-09-18 15:37:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 244 states have (on average 1.2254098360655739) internal successors, (299), 244 states have internal predecessors, (299), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 302 transitions. [2024-09-18 15:37:34,974 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 302 transitions. Word has length 142 [2024-09-18 15:37:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:34,975 INFO L474 AbstractCegarLoop]: Abstraction has 248 states and 302 transitions. [2024-09-18 15:37:34,975 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.722222222222222) internal successors, (139), 17 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:34,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 302 transitions. [2024-09-18 15:37:34,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:34,977 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:34,977 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:34,977 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-18 15:37:34,977 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:34,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:34,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1717371161, now seen corresponding path program 1 times [2024-09-18 15:37:34,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:34,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711214579] [2024-09-18 15:37:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:34,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:35,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:35,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:35,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711214579] [2024-09-18 15:37:35,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711214579] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:35,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:35,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-09-18 15:37:35,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561891777] [2024-09-18 15:37:35,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:35,366 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-18 15:37:35,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-18 15:37:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2024-09-18 15:37:35,367 INFO L87 Difference]: Start difference. First operand 248 states and 302 transitions. Second operand has 20 states, 20 states have (on average 6.95) internal successors, (139), 19 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:35,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:35,909 INFO L93 Difference]: Finished difference Result 351 states and 405 transitions. [2024-09-18 15:37:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-18 15:37:35,909 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.95) internal successors, (139), 19 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:35,912 INFO L225 Difference]: With dead ends: 351 [2024-09-18 15:37:35,912 INFO L226 Difference]: Without dead ends: 244 [2024-09-18 15:37:35,913 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2024-09-18 15:37:35,913 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 191 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:35,914 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 10 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:35,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-09-18 15:37:35,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2024-09-18 15:37:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 240 states have (on average 1.2208333333333334) internal successors, (293), 240 states have internal predecessors, (293), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 296 transitions. [2024-09-18 15:37:35,928 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 296 transitions. Word has length 142 [2024-09-18 15:37:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:35,929 INFO L474 AbstractCegarLoop]: Abstraction has 244 states and 296 transitions. [2024-09-18 15:37:35,929 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.95) internal successors, (139), 19 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:35,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:35,930 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 296 transitions. [2024-09-18 15:37:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:35,931 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:35,931 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:35,932 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-18 15:37:35,932 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:35,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash 301646407, now seen corresponding path program 1 times [2024-09-18 15:37:35,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:35,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134457286] [2024-09-18 15:37:35,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:35,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:36,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:36,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134457286] [2024-09-18 15:37:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134457286] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:36,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:36,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2024-09-18 15:37:36,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541151378] [2024-09-18 15:37:36,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:36,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-18 15:37:36,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:36,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-18 15:37:36,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2024-09-18 15:37:36,467 INFO L87 Difference]: Start difference. First operand 244 states and 296 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 23 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:37,288 INFO L93 Difference]: Finished difference Result 339 states and 391 transitions. [2024-09-18 15:37:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-18 15:37:37,289 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 23 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:37,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:37,291 INFO L225 Difference]: With dead ends: 339 [2024-09-18 15:37:37,292 INFO L226 Difference]: Without dead ends: 236 [2024-09-18 15:37:37,293 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2024-09-18 15:37:37,294 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 187 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:37,295 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 22 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:37:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-09-18 15:37:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2024-09-18 15:37:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 232 states have (on average 1.2112068965517242) internal successors, (281), 232 states have internal predecessors, (281), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 284 transitions. [2024-09-18 15:37:37,308 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 284 transitions. Word has length 142 [2024-09-18 15:37:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:37,309 INFO L474 AbstractCegarLoop]: Abstraction has 236 states and 284 transitions. [2024-09-18 15:37:37,309 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 23 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:37,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 284 transitions. [2024-09-18 15:37:37,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:37,311 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:37,311 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:37,311 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-09-18 15:37:37,311 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:37,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash -14301178, now seen corresponding path program 1 times [2024-09-18 15:37:37,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:37,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733422695] [2024-09-18 15:37:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:37,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:37,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:37,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:37,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733422695] [2024-09-18 15:37:37,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733422695] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:37,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:37,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-09-18 15:37:37,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726382173] [2024-09-18 15:37:37,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:37,750 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-18 15:37:37,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:37,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-18 15:37:37,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2024-09-18 15:37:37,751 INFO L87 Difference]: Start difference. First operand 236 states and 284 transitions. Second operand has 25 states, 25 states have (on average 5.56) internal successors, (139), 24 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:38,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:38,343 INFO L93 Difference]: Finished difference Result 329 states and 377 transitions. [2024-09-18 15:37:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-18 15:37:38,344 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 24 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:38,346 INFO L225 Difference]: With dead ends: 329 [2024-09-18 15:37:38,346 INFO L226 Difference]: Without dead ends: 234 [2024-09-18 15:37:38,347 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2024-09-18 15:37:38,347 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 186 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:38,348 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 10 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-09-18 15:37:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2024-09-18 15:37:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 230 states have (on average 1.208695652173913) internal successors, (278), 230 states have internal predecessors, (278), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:38,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 281 transitions. [2024-09-18 15:37:38,361 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 281 transitions. Word has length 142 [2024-09-18 15:37:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:38,361 INFO L474 AbstractCegarLoop]: Abstraction has 234 states and 281 transitions. [2024-09-18 15:37:38,361 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 24 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:38,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 281 transitions. [2024-09-18 15:37:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:38,363 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:38,363 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:38,363 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-18 15:37:38,363 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:38,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1678194107, now seen corresponding path program 1 times [2024-09-18 15:37:38,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:38,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73868087] [2024-09-18 15:37:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:38,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:38,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73868087] [2024-09-18 15:37:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73868087] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:38,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:38,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-09-18 15:37:38,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475003102] [2024-09-18 15:37:38,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:38,810 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-18 15:37:38,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:38,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-18 15:37:38,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2024-09-18 15:37:38,811 INFO L87 Difference]: Start difference. First operand 234 states and 281 transitions. Second operand has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 25 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:39,594 INFO L93 Difference]: Finished difference Result 325 states and 372 transitions. [2024-09-18 15:37:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-18 15:37:39,595 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 25 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:39,597 INFO L225 Difference]: With dead ends: 325 [2024-09-18 15:37:39,597 INFO L226 Difference]: Without dead ends: 232 [2024-09-18 15:37:39,598 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2024-09-18 15:37:39,598 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 185 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:39,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 22 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:37:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-18 15:37:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-18 15:37:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 228 states have (on average 1.206140350877193) internal successors, (275), 228 states have internal predecessors, (275), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:39,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 278 transitions. [2024-09-18 15:37:39,611 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 278 transitions. Word has length 142 [2024-09-18 15:37:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:39,611 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 278 transitions. [2024-09-18 15:37:39,611 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 25 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:39,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 278 transitions. [2024-09-18 15:37:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:39,612 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:39,613 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:39,613 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-18 15:37:39,613 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:39,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:39,613 INFO L85 PathProgramCache]: Analyzing trace with hash 574594206, now seen corresponding path program 1 times [2024-09-18 15:37:39,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:39,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058742935] [2024-09-18 15:37:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:39,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:40,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:40,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:40,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058742935] [2024-09-18 15:37:40,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058742935] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:40,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:40,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2024-09-18 15:37:40,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021794424] [2024-09-18 15:37:40,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:40,121 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-18 15:37:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-18 15:37:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2024-09-18 15:37:40,122 INFO L87 Difference]: Start difference. First operand 232 states and 278 transitions. Second operand has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 28 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:40,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:40,855 INFO L93 Difference]: Finished difference Result 317 states and 363 transitions. [2024-09-18 15:37:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-18 15:37:40,856 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 28 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:40,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:40,857 INFO L225 Difference]: With dead ends: 317 [2024-09-18 15:37:40,858 INFO L226 Difference]: Without dead ends: 226 [2024-09-18 15:37:40,859 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2024-09-18 15:37:40,859 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 182 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:40,859 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 16 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-09-18 15:37:40,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2024-09-18 15:37:40,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 222 states have (on average 1.1981981981981982) internal successors, (266), 222 states have internal predecessors, (266), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 269 transitions. [2024-09-18 15:37:40,873 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 269 transitions. Word has length 142 [2024-09-18 15:37:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:40,873 INFO L474 AbstractCegarLoop]: Abstraction has 226 states and 269 transitions. [2024-09-18 15:37:40,873 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.793103448275862) internal successors, (139), 28 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:40,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 269 transitions. [2024-09-18 15:37:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:40,875 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:40,875 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:40,875 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-18 15:37:40,875 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:40,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:40,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1676967250, now seen corresponding path program 1 times [2024-09-18 15:37:40,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:40,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74354214] [2024-09-18 15:37:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:40,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:41,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:41,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74354214] [2024-09-18 15:37:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74354214] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:41,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:41,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2024-09-18 15:37:41,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696702755] [2024-09-18 15:37:41,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:41,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-18 15:37:41,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:41,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-18 15:37:41,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2024-09-18 15:37:41,421 INFO L87 Difference]: Start difference. First operand 226 states and 269 transitions. Second operand has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 30 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:42,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:42,056 INFO L93 Difference]: Finished difference Result 307 states and 350 transitions. [2024-09-18 15:37:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-18 15:37:42,056 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 30 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:42,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:42,058 INFO L225 Difference]: With dead ends: 307 [2024-09-18 15:37:42,058 INFO L226 Difference]: Without dead ends: 222 [2024-09-18 15:37:42,060 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2024-09-18 15:37:42,060 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 180 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:42,060 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 7 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:37:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-09-18 15:37:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-09-18 15:37:42,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 1.1926605504587156) internal successors, (260), 218 states have internal predecessors, (260), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:42,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 263 transitions. [2024-09-18 15:37:42,072 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 263 transitions. Word has length 142 [2024-09-18 15:37:42,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:42,072 INFO L474 AbstractCegarLoop]: Abstraction has 222 states and 263 transitions. [2024-09-18 15:37:42,073 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 30 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:42,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 263 transitions. [2024-09-18 15:37:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:42,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:42,074 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:42,074 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-09-18 15:37:42,074 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:42,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:42,075 INFO L85 PathProgramCache]: Analyzing trace with hash 43579175, now seen corresponding path program 1 times [2024-09-18 15:37:42,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:42,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218350090] [2024-09-18 15:37:42,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:42,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:42,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:42,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218350090] [2024-09-18 15:37:42,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218350090] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:42,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:42,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2024-09-18 15:37:42,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058995512] [2024-09-18 15:37:42,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:42,704 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-18 15:37:42,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:42,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-18 15:37:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2024-09-18 15:37:42,705 INFO L87 Difference]: Start difference. First operand 222 states and 263 transitions. Second operand has 32 states, 32 states have (on average 4.34375) internal successors, (139), 31 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:43,487 INFO L93 Difference]: Finished difference Result 301 states and 342 transitions. [2024-09-18 15:37:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-18 15:37:43,487 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.34375) internal successors, (139), 31 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:43,489 INFO L225 Difference]: With dead ends: 301 [2024-09-18 15:37:43,489 INFO L226 Difference]: Without dead ends: 220 [2024-09-18 15:37:43,491 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2024-09-18 15:37:43,491 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 179 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:43,491 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 10 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:43,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-09-18 15:37:43,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-09-18 15:37:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 216 states have (on average 1.1898148148148149) internal successors, (257), 216 states have internal predecessors, (257), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:43,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 260 transitions. [2024-09-18 15:37:43,504 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 260 transitions. Word has length 142 [2024-09-18 15:37:43,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:43,504 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 260 transitions. [2024-09-18 15:37:43,504 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.34375) internal successors, (139), 31 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:43,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 260 transitions. [2024-09-18 15:37:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:43,506 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:43,506 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:43,506 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-09-18 15:37:43,507 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:43,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:43,507 INFO L85 PathProgramCache]: Analyzing trace with hash 356264443, now seen corresponding path program 1 times [2024-09-18 15:37:43,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:43,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045637062] [2024-09-18 15:37:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:43,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:44,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:44,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045637062] [2024-09-18 15:37:44,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045637062] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:44,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:44,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2024-09-18 15:37:44,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69697069] [2024-09-18 15:37:44,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:44,213 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-18 15:37:44,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:44,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-18 15:37:44,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2024-09-18 15:37:44,215 INFO L87 Difference]: Start difference. First operand 220 states and 260 transitions. Second operand has 34 states, 34 states have (on average 4.088235294117647) internal successors, (139), 33 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:45,082 INFO L93 Difference]: Finished difference Result 295 states and 335 transitions. [2024-09-18 15:37:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-18 15:37:45,083 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.088235294117647) internal successors, (139), 33 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:45,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:45,085 INFO L225 Difference]: With dead ends: 295 [2024-09-18 15:37:45,085 INFO L226 Difference]: Without dead ends: 216 [2024-09-18 15:37:45,086 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2024-09-18 15:37:45,087 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 177 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:45,087 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 10 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:45,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-09-18 15:37:45,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-09-18 15:37:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.1839622641509433) internal successors, (251), 212 states have internal predecessors, (251), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 254 transitions. [2024-09-18 15:37:45,106 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 254 transitions. Word has length 142 [2024-09-18 15:37:45,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:45,106 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 254 transitions. [2024-09-18 15:37:45,107 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.088235294117647) internal successors, (139), 33 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:45,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 254 transitions. [2024-09-18 15:37:45,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:45,109 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:45,109 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:45,109 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-09-18 15:37:45,109 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:45,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash 538241191, now seen corresponding path program 1 times [2024-09-18 15:37:45,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:45,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302191082] [2024-09-18 15:37:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:45,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:45,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:45,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:45,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302191082] [2024-09-18 15:37:45,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302191082] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:45,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:45,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2024-09-18 15:37:45,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117506490] [2024-09-18 15:37:45,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:45,792 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-18 15:37:45,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:45,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-18 15:37:45,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2024-09-18 15:37:45,793 INFO L87 Difference]: Start difference. First operand 216 states and 254 transitions. Second operand has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 35 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:46,619 INFO L93 Difference]: Finished difference Result 287 states and 325 transitions. [2024-09-18 15:37:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-18 15:37:46,620 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 35 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:46,622 INFO L225 Difference]: With dead ends: 287 [2024-09-18 15:37:46,622 INFO L226 Difference]: Without dead ends: 212 [2024-09-18 15:37:46,624 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2024-09-18 15:37:46,626 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 175 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:46,626 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 19 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-09-18 15:37:46,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-09-18 15:37:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 1.1778846153846154) internal successors, (245), 208 states have internal predecessors, (245), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 248 transitions. [2024-09-18 15:37:46,641 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 248 transitions. Word has length 142 [2024-09-18 15:37:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:46,641 INFO L474 AbstractCegarLoop]: Abstraction has 212 states and 248 transitions. [2024-09-18 15:37:46,641 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.861111111111111) internal successors, (139), 35 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:46,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:46,642 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 248 transitions. [2024-09-18 15:37:46,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:46,642 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:46,643 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:46,643 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-09-18 15:37:46,643 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:46,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:46,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1118988679, now seen corresponding path program 1 times [2024-09-18 15:37:46,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:46,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328978523] [2024-09-18 15:37:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:46,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:47,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:47,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:47,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328978523] [2024-09-18 15:37:47,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328978523] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:47,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:47,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2024-09-18 15:37:47,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780603547] [2024-09-18 15:37:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:47,476 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-18 15:37:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-18 15:37:47,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2024-09-18 15:37:47,478 INFO L87 Difference]: Start difference. First operand 212 states and 248 transitions. Second operand has 40 states, 40 states have (on average 3.475) internal successors, (139), 39 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:48,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:48,387 INFO L93 Difference]: Finished difference Result 275 states and 311 transitions. [2024-09-18 15:37:48,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-18 15:37:48,388 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.475) internal successors, (139), 39 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:48,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:48,389 INFO L225 Difference]: With dead ends: 275 [2024-09-18 15:37:48,389 INFO L226 Difference]: Without dead ends: 204 [2024-09-18 15:37:48,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2024-09-18 15:37:48,392 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 171 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:48,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 19 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-09-18 15:37:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2024-09-18 15:37:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 200 states have (on average 1.165) internal successors, (233), 200 states have internal predecessors, (233), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 236 transitions. [2024-09-18 15:37:48,404 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 236 transitions. Word has length 142 [2024-09-18 15:37:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:48,404 INFO L474 AbstractCegarLoop]: Abstraction has 204 states and 236 transitions. [2024-09-18 15:37:48,405 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.475) internal successors, (139), 39 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:48,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:48,405 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 236 transitions. [2024-09-18 15:37:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:48,406 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:48,406 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:48,406 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-09-18 15:37:48,406 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:48,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash -942762330, now seen corresponding path program 1 times [2024-09-18 15:37:48,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:48,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533537358] [2024-09-18 15:37:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:48,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:49,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:49,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:49,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533537358] [2024-09-18 15:37:49,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533537358] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:49,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:49,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2024-09-18 15:37:49,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599425397] [2024-09-18 15:37:49,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:49,184 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-18 15:37:49,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:49,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-18 15:37:49,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2024-09-18 15:37:49,185 INFO L87 Difference]: Start difference. First operand 204 states and 236 transitions. Second operand has 41 states, 41 states have (on average 3.3902439024390243) internal successors, (139), 40 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:50,051 INFO L93 Difference]: Finished difference Result 265 states and 297 transitions. [2024-09-18 15:37:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-18 15:37:50,051 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.3902439024390243) internal successors, (139), 40 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:50,053 INFO L225 Difference]: With dead ends: 265 [2024-09-18 15:37:50,053 INFO L226 Difference]: Without dead ends: 202 [2024-09-18 15:37:50,055 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2024-09-18 15:37:50,056 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 170 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:50,056 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 7 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:37:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-09-18 15:37:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-09-18 15:37:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.1616161616161615) internal successors, (230), 198 states have internal predecessors, (230), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 233 transitions. [2024-09-18 15:37:50,066 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 233 transitions. Word has length 142 [2024-09-18 15:37:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:50,067 INFO L474 AbstractCegarLoop]: Abstraction has 202 states and 233 transitions. [2024-09-18 15:37:50,067 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.3902439024390243) internal successors, (139), 40 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:50,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:50,067 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 233 transitions. [2024-09-18 15:37:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:50,068 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:50,068 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:50,068 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-09-18 15:37:50,069 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:50,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:50,069 INFO L85 PathProgramCache]: Analyzing trace with hash -663626821, now seen corresponding path program 1 times [2024-09-18 15:37:50,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:50,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621399078] [2024-09-18 15:37:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:50,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:50,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:50,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621399078] [2024-09-18 15:37:50,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621399078] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:50,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:50,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2024-09-18 15:37:50,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290898018] [2024-09-18 15:37:50,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:50,901 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-18 15:37:50,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:50,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-18 15:37:50,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2024-09-18 15:37:50,902 INFO L87 Difference]: Start difference. First operand 202 states and 233 transitions. Second operand has 42 states, 42 states have (on average 3.3095238095238093) internal successors, (139), 41 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:51,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:51,879 INFO L93 Difference]: Finished difference Result 261 states and 292 transitions. [2024-09-18 15:37:51,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-18 15:37:51,880 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.3095238095238093) internal successors, (139), 41 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:51,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:51,882 INFO L225 Difference]: With dead ends: 261 [2024-09-18 15:37:51,882 INFO L226 Difference]: Without dead ends: 200 [2024-09-18 15:37:51,884 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2460, Invalid=4020, Unknown=0, NotChecked=0, Total=6480 [2024-09-18 15:37:51,885 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 169 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:51,885 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 19 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:51,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-18 15:37:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-09-18 15:37:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 196 states have (on average 1.1581632653061225) internal successors, (227), 196 states have internal predecessors, (227), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:51,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 230 transitions. [2024-09-18 15:37:51,897 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 230 transitions. Word has length 142 [2024-09-18 15:37:51,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:51,898 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 230 transitions. [2024-09-18 15:37:51,898 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.3095238095238093) internal successors, (139), 41 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:51,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 230 transitions. [2024-09-18 15:37:51,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:51,899 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:51,899 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:51,899 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-09-18 15:37:51,900 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:51,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1747445950, now seen corresponding path program 1 times [2024-09-18 15:37:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:51,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389479093] [2024-09-18 15:37:51,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:51,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:52,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:52,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389479093] [2024-09-18 15:37:52,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389479093] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:52,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:52,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2024-09-18 15:37:52,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232801458] [2024-09-18 15:37:52,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:52,797 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-18 15:37:52,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-18 15:37:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2024-09-18 15:37:52,799 INFO L87 Difference]: Start difference. First operand 200 states and 230 transitions. Second operand has 45 states, 45 states have (on average 3.088888888888889) internal successors, (139), 44 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:53,881 INFO L93 Difference]: Finished difference Result 253 states and 283 transitions. [2024-09-18 15:37:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-18 15:37:53,881 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.088888888888889) internal successors, (139), 44 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:53,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:53,883 INFO L225 Difference]: With dead ends: 253 [2024-09-18 15:37:53,883 INFO L226 Difference]: Without dead ends: 194 [2024-09-18 15:37:53,886 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2838, Invalid=4644, Unknown=0, NotChecked=0, Total=7482 [2024-09-18 15:37:53,886 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 166 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:53,887 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 25 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:53,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-09-18 15:37:53,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-09-18 15:37:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.1473684210526316) internal successors, (218), 190 states have internal predecessors, (218), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 221 transitions. [2024-09-18 15:37:53,898 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 221 transitions. Word has length 142 [2024-09-18 15:37:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:53,898 INFO L474 AbstractCegarLoop]: Abstraction has 194 states and 221 transitions. [2024-09-18 15:37:53,898 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.088888888888889) internal successors, (139), 44 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:53,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 221 transitions. [2024-09-18 15:37:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:53,900 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:53,900 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:53,900 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-09-18 15:37:53,900 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:53,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1759531634, now seen corresponding path program 1 times [2024-09-18 15:37:53,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:53,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944178201] [2024-09-18 15:37:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:53,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:54,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:54,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:54,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944178201] [2024-09-18 15:37:54,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944178201] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:54,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:54,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2024-09-18 15:37:54,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303799215] [2024-09-18 15:37:54,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:54,869 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-18 15:37:54,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:54,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-18 15:37:54,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2024-09-18 15:37:54,871 INFO L87 Difference]: Start difference. First operand 194 states and 221 transitions. Second operand has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 46 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:55,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:55,967 INFO L93 Difference]: Finished difference Result 243 states and 270 transitions. [2024-09-18 15:37:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-18 15:37:55,967 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 46 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:55,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:55,969 INFO L225 Difference]: With dead ends: 243 [2024-09-18 15:37:55,969 INFO L226 Difference]: Without dead ends: 190 [2024-09-18 15:37:55,970 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2024-09-18 15:37:55,971 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 164 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:55,971 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 16 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-09-18 15:37:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-09-18 15:37:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 186 states have (on average 1.1397849462365592) internal successors, (212), 186 states have internal predecessors, (212), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 215 transitions. [2024-09-18 15:37:55,981 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 215 transitions. Word has length 142 [2024-09-18 15:37:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:55,982 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 215 transitions. [2024-09-18 15:37:55,982 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.9574468085106385) internal successors, (139), 46 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:55,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 215 transitions. [2024-09-18 15:37:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:55,983 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:55,983 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:55,983 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-09-18 15:37:55,983 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:55,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1994581657, now seen corresponding path program 1 times [2024-09-18 15:37:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110811437] [2024-09-18 15:37:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:55,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:56,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:56,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:56,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110811437] [2024-09-18 15:37:56,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110811437] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:56,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:56,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2024-09-18 15:37:56,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457969247] [2024-09-18 15:37:56,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:56,999 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-18 15:37:56,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:57,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-18 15:37:57,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2024-09-18 15:37:57,001 INFO L87 Difference]: Start difference. First operand 190 states and 215 transitions. Second operand has 48 states, 48 states have (on average 2.8958333333333335) internal successors, (139), 47 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:58,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:58,207 INFO L93 Difference]: Finished difference Result 237 states and 262 transitions. [2024-09-18 15:37:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-18 15:37:58,208 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.8958333333333335) internal successors, (139), 47 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:37:58,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:58,209 INFO L225 Difference]: With dead ends: 237 [2024-09-18 15:37:58,209 INFO L226 Difference]: Without dead ends: 188 [2024-09-18 15:37:58,210 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3243, Invalid=5313, Unknown=0, NotChecked=0, Total=8556 [2024-09-18 15:37:58,210 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 163 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:58,210 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 28 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:37:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-09-18 15:37:58,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-09-18 15:37:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 184 states have (on average 1.1358695652173914) internal successors, (209), 184 states have internal predecessors, (209), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 212 transitions. [2024-09-18 15:37:58,219 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 212 transitions. Word has length 142 [2024-09-18 15:37:58,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:58,219 INFO L474 AbstractCegarLoop]: Abstraction has 188 states and 212 transitions. [2024-09-18 15:37:58,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.8958333333333335) internal successors, (139), 47 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:37:58,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 212 transitions. [2024-09-18 15:37:58,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:37:58,220 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:58,220 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:37:58,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-09-18 15:37:58,221 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:58,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1392620805, now seen corresponding path program 1 times [2024-09-18 15:37:58,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:58,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672738046] [2024-09-18 15:37:58,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:58,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:59,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:37:59,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:59,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672738046] [2024-09-18 15:37:59,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672738046] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:37:59,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:37:59,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2024-09-18 15:37:59,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442386953] [2024-09-18 15:37:59,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:37:59,282 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-18 15:37:59,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:59,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-18 15:37:59,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2024-09-18 15:37:59,283 INFO L87 Difference]: Start difference. First operand 188 states and 212 transitions. Second operand has 50 states, 50 states have (on average 2.78) internal successors, (139), 49 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:00,542 INFO L93 Difference]: Finished difference Result 231 states and 255 transitions. [2024-09-18 15:38:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-18 15:38:00,542 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 49 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:38:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:00,544 INFO L225 Difference]: With dead ends: 231 [2024-09-18 15:38:00,544 INFO L226 Difference]: Without dead ends: 184 [2024-09-18 15:38:00,546 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3528, Invalid=5784, Unknown=0, NotChecked=0, Total=9312 [2024-09-18 15:38:00,546 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 161 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:00,547 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 25 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:38:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-18 15:38:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-18 15:38:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 180 states have (on average 1.1277777777777778) internal successors, (203), 180 states have internal predecessors, (203), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 206 transitions. [2024-09-18 15:38:00,561 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 206 transitions. Word has length 142 [2024-09-18 15:38:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:00,561 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 206 transitions. [2024-09-18 15:38:00,561 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 49 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:00,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 206 transitions. [2024-09-18 15:38:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:38:00,562 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:00,562 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:38:00,562 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-09-18 15:38:00,563 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:00,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash -484456345, now seen corresponding path program 1 times [2024-09-18 15:38:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:00,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759335067] [2024-09-18 15:38:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:00,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:01,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:01,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759335067] [2024-09-18 15:38:01,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759335067] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:38:01,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:38:01,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2024-09-18 15:38:01,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602624507] [2024-09-18 15:38:01,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:38:01,723 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-18 15:38:01,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:01,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-18 15:38:01,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2024-09-18 15:38:01,725 INFO L87 Difference]: Start difference. First operand 184 states and 206 transitions. Second operand has 52 states, 52 states have (on average 2.673076923076923) internal successors, (139), 51 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:03,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:03,043 INFO L93 Difference]: Finished difference Result 223 states and 245 transitions. [2024-09-18 15:38:03,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-18 15:38:03,044 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.673076923076923) internal successors, (139), 51 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:38:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:03,045 INFO L225 Difference]: With dead ends: 223 [2024-09-18 15:38:03,045 INFO L226 Difference]: Without dead ends: 180 [2024-09-18 15:38:03,047 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3825, Invalid=6275, Unknown=0, NotChecked=0, Total=10100 [2024-09-18 15:38:03,048 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 159 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:03,048 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 22 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:38:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-09-18 15:38:03,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-09-18 15:38:03,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 176 states have (on average 1.1193181818181819) internal successors, (197), 176 states have internal predecessors, (197), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 200 transitions. [2024-09-18 15:38:03,062 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 200 transitions. Word has length 142 [2024-09-18 15:38:03,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:03,063 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 200 transitions. [2024-09-18 15:38:03,063 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.673076923076923) internal successors, (139), 51 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:03,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:03,063 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 200 transitions. [2024-09-18 15:38:03,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:38:03,064 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:03,064 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:38:03,064 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-09-18 15:38:03,065 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:03,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1364261177, now seen corresponding path program 1 times [2024-09-18 15:38:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352645913] [2024-09-18 15:38:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:03,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:03,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:03,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:03,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352645913] [2024-09-18 15:38:03,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352645913] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:38:03,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:38:03,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-09-18 15:38:03,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285234141] [2024-09-18 15:38:03,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:38:03,336 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-18 15:38:03,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:03,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-18 15:38:03,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2024-09-18 15:38:03,337 INFO L87 Difference]: Start difference. First operand 180 states and 200 transitions. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 18 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:04,119 INFO L93 Difference]: Finished difference Result 483 states and 517 transitions. [2024-09-18 15:38:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-18 15:38:04,120 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 18 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:38:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:04,122 INFO L225 Difference]: With dead ends: 483 [2024-09-18 15:38:04,123 INFO L226 Difference]: Without dead ends: 480 [2024-09-18 15:38:04,123 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2024-09-18 15:38:04,124 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 712 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:04,124 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 13 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-18 15:38:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-09-18 15:38:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 419. [2024-09-18 15:38:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 415 states have (on average 1.0481927710843373) internal successors, (435), 415 states have internal predecessors, (435), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:04,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 438 transitions. [2024-09-18 15:38:04,161 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 438 transitions. Word has length 142 [2024-09-18 15:38:04,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:04,162 INFO L474 AbstractCegarLoop]: Abstraction has 419 states and 438 transitions. [2024-09-18 15:38:04,162 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 18 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:04,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:04,162 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 438 transitions. [2024-09-18 15:38:04,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:38:04,165 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:04,165 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:38:04,165 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-09-18 15:38:04,166 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:04,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:04,166 INFO L85 PathProgramCache]: Analyzing trace with hash 145194814, now seen corresponding path program 1 times [2024-09-18 15:38:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:04,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119421198] [2024-09-18 15:38:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:04,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:05,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:05,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:05,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119421198] [2024-09-18 15:38:05,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119421198] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:38:05,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:38:05,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2024-09-18 15:38:05,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279469973] [2024-09-18 15:38:05,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:38:05,509 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-18 15:38:05,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:05,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-18 15:38:05,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=1532, Unknown=0, NotChecked=0, Total=2862 [2024-09-18 15:38:05,511 INFO L87 Difference]: Start difference. First operand 419 states and 438 transitions. Second operand has 54 states, 54 states have (on average 2.574074074074074) internal successors, (139), 53 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:06,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:06,788 INFO L93 Difference]: Finished difference Result 454 states and 473 transitions. [2024-09-18 15:38:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-18 15:38:06,789 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.574074074074074) internal successors, (139), 53 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:38:06,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:06,791 INFO L225 Difference]: With dead ends: 454 [2024-09-18 15:38:06,791 INFO L226 Difference]: Without dead ends: 146 [2024-09-18 15:38:06,793 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3984, Invalid=6936, Unknown=0, NotChecked=0, Total=10920 [2024-09-18 15:38:06,793 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 260 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:06,793 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 19 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:38:06,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-18 15:38:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2024-09-18 15:38:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.0142857142857142) internal successors, (142), 140 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-18 15:38:06,806 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 142 [2024-09-18 15:38:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:06,807 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-18 15:38:06,807 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.574074074074074) internal successors, (139), 53 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:06,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-18 15:38:06,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-18 15:38:06,809 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:06,809 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:38:06,809 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-09-18 15:38:06,809 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:06,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:06,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1356589483, now seen corresponding path program 1 times [2024-09-18 15:38:06,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:06,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041557048] [2024-09-18 15:38:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:08,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:08,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041557048] [2024-09-18 15:38:08,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041557048] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:38:08,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:38:08,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2024-09-18 15:38:08,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419374869] [2024-09-18 15:38:08,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:38:08,779 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-18 15:38:08,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:08,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-18 15:38:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2024-09-18 15:38:08,782 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 71 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 70 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:10,847 INFO L93 Difference]: Finished difference Result 185 states and 187 transitions. [2024-09-18 15:38:10,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-18 15:38:10,847 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 70 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2024-09-18 15:38:10,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:10,849 INFO L225 Difference]: With dead ends: 185 [2024-09-18 15:38:10,849 INFO L226 Difference]: Without dead ends: 146 [2024-09-18 15:38:10,851 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2024-09-18 15:38:10,852 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 143 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:10,852 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 16 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:38:10,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-18 15:38:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2024-09-18 15:38:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 141 states have (on average 1.0070921985815602) internal successors, (142), 141 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2024-09-18 15:38:10,864 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2024-09-18 15:38:10,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:10,864 INFO L474 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2024-09-18 15:38:10,864 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 70 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:10,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2024-09-18 15:38:10,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-09-18 15:38:10,865 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:10,865 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:38:10,865 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-09-18 15:38:10,865 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:10,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:10,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1995090171, now seen corresponding path program 1 times [2024-09-18 15:38:10,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:10,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124600426] [2024-09-18 15:38:10,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:10,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:12,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:12,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:12,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124600426] [2024-09-18 15:38:12,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124600426] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:12,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830992269] [2024-09-18 15:38:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:12,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:12,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:12,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:38:12,912 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 15:38:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:12,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-18 15:38:13,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:13,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830992269] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:16,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:16,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 104 [2024-09-18 15:38:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504422171] [2024-09-18 15:38:16,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:16,664 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-18 15:38:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:16,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-18 15:38:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=5457, Unknown=0, NotChecked=0, Total=10712 [2024-09-18 15:38:16,667 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand has 104 states, 104 states have (on average 2.7211538461538463) internal successors, (283), 103 states have internal predecessors, (283), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:20,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:20,669 INFO L93 Difference]: Finished difference Result 212 states and 243 transitions. [2024-09-18 15:38:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-09-18 15:38:20,670 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.7211538461538463) internal successors, (283), 103 states have internal predecessors, (283), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144 [2024-09-18 15:38:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:20,671 INFO L225 Difference]: With dead ends: 212 [2024-09-18 15:38:20,671 INFO L226 Difference]: Without dead ends: 209 [2024-09-18 15:38:20,673 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 220 SyntacticMatches, 38 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7704 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=15556, Invalid=25856, Unknown=0, NotChecked=0, Total=41412 [2024-09-18 15:38:20,674 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 285 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:20,674 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 31 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:38:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-09-18 15:38:20,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-09-18 15:38:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.0048780487804878) internal successors, (206), 205 states have internal predecessors, (206), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:20,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2024-09-18 15:38:20,688 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 144 [2024-09-18 15:38:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:20,688 INFO L474 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2024-09-18 15:38:20,688 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.7211538461538463) internal successors, (283), 103 states have internal predecessors, (283), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:20,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2024-09-18 15:38:20,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-09-18 15:38:20,690 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:20,690 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:38:20,708 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 15:38:20,890 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:20,891 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:20,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 619256389, now seen corresponding path program 2 times [2024-09-18 15:38:20,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:20,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221557314] [2024-09-18 15:38:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:20,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:22,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:22,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:22,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221557314] [2024-09-18 15:38:22,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221557314] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:22,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259260050] [2024-09-18 15:38:22,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:38:22,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:22,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:22,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:38:22,456 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 15:38:22,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:38:22,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:38:22,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-09-18 15:38:22,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:22,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:23,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259260050] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:23,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:23,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 56 [2024-09-18 15:38:23,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238766640] [2024-09-18 15:38:23,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:23,146 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-18 15:38:23,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:23,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-18 15:38:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=2970, Unknown=0, NotChecked=0, Total=3080 [2024-09-18 15:38:23,147 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand has 56 states, 56 states have (on average 3.7142857142857144) internal successors, (208), 55 states have internal predecessors, (208), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:27,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:27,139 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2024-09-18 15:38:27,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-18 15:38:27,140 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.7142857142857144) internal successors, (208), 55 states have internal predecessors, (208), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 208 [2024-09-18 15:38:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:27,141 INFO L225 Difference]: With dead ends: 215 [2024-09-18 15:38:27,141 INFO L226 Difference]: Without dead ends: 212 [2024-09-18 15:38:27,143 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 416 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=319, Invalid=11237, Unknown=0, NotChecked=0, Total=11556 [2024-09-18 15:38:27,143 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 210 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 10770 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 10771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:27,143 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 160 Invalid, 10771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10770 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-09-18 15:38:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-09-18 15:38:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2024-09-18 15:38:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 207 states have (on average 1.0048309178743962) internal successors, (208), 207 states have internal predecessors, (208), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2024-09-18 15:38:27,164 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2024-09-18 15:38:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:27,165 INFO L474 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2024-09-18 15:38:27,165 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.7142857142857144) internal successors, (208), 55 states have internal predecessors, (208), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:27,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2024-09-18 15:38:27,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-09-18 15:38:27,166 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:27,167 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:38:27,184 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 15:38:27,367 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-09-18 15:38:27,367 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:27,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1902589665, now seen corresponding path program 3 times [2024-09-18 15:38:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:27,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891559520] [2024-09-18 15:38:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:28,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 1156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:38:28,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891559520] [2024-09-18 15:38:28,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891559520] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:38:28,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:38:28,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2024-09-18 15:38:28,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880317984] [2024-09-18 15:38:28,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:38:28,940 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-18 15:38:28,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-18 15:38:28,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2024-09-18 15:38:28,942 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand has 53 states, 53 states have (on average 3.9056603773584904) internal successors, (207), 52 states have internal predecessors, (207), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:29,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:29,901 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2024-09-18 15:38:29,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-18 15:38:29,902 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.9056603773584904) internal successors, (207), 52 states have internal predecessors, (207), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 210 [2024-09-18 15:38:29,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:29,903 INFO L225 Difference]: With dead ends: 211 [2024-09-18 15:38:29,903 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 15:38:29,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3978, Invalid=6528, Unknown=0, NotChecked=0, Total=10506 [2024-09-18 15:38:29,905 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 137 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:29,905 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 16 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:38:29,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 15:38:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 15:38:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-18 15:38:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 15:38:29,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 210 [2024-09-18 15:38:29,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:29,906 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 15:38:29,906 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.9056603773584904) internal successors, (207), 52 states have internal predecessors, (207), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:38:29,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:29,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 15:38:29,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 15:38:29,909 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 15:38:29,909 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-09-18 15:38:29,911 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:38:29,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 15:38:30,989 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 15:38:31,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 03:38:31 BoogieIcfgContainer [2024-09-18 15:38:31,040 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 15:38:31,041 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 15:38:31,041 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 15:38:31,041 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 15:38:31,041 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:37:26" (3/4) ... [2024-09-18 15:38:31,043 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 15:38:31,159 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 15:38:31,162 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 15:38:31,163 INFO L158 Benchmark]: Toolchain (without parser) took 65964.87ms. Allocated memory was 159.4MB in the beginning and 522.2MB in the end (delta: 362.8MB). Free memory was 99.5MB in the beginning and 308.7MB in the end (delta: -209.2MB). Peak memory consumption was 157.1MB. Max. memory is 16.1GB. [2024-09-18 15:38:31,163 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:38:31,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.15ms. Allocated memory is still 159.4MB. Free memory was 99.1MB in the beginning and 77.4MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-09-18 15:38:31,163 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.75ms. Allocated memory is still 159.4MB. Free memory was 77.4MB in the beginning and 76.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:38:31,163 INFO L158 Benchmark]: Boogie Preprocessor took 65.31ms. Allocated memory is still 159.4MB. Free memory was 76.4MB in the beginning and 72.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-18 15:38:31,163 INFO L158 Benchmark]: RCFGBuilder took 814.89ms. Allocated memory was 159.4MB in the beginning and 247.5MB in the end (delta: 88.1MB). Free memory was 72.6MB in the beginning and 176.2MB in the end (delta: -103.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2024-09-18 15:38:31,164 INFO L158 Benchmark]: TraceAbstraction took 64545.45ms. Allocated memory was 247.5MB in the beginning and 522.2MB in the end (delta: 274.7MB). Free memory was 175.2MB in the beginning and 312.9MB in the end (delta: -137.7MB). Peak memory consumption was 273.3MB. Max. memory is 16.1GB. [2024-09-18 15:38:31,164 INFO L158 Benchmark]: Witness Printer took 121.44ms. Allocated memory is still 522.2MB. Free memory was 312.9MB in the beginning and 308.7MB in the end (delta: 4.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-18 15:38:31,166 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.15ms. Allocated memory is still 159.4MB. Free memory was 99.1MB in the beginning and 77.4MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.75ms. Allocated memory is still 159.4MB. Free memory was 77.4MB in the beginning and 76.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 65.31ms. Allocated memory is still 159.4MB. Free memory was 76.4MB in the beginning and 72.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 814.89ms. Allocated memory was 159.4MB in the beginning and 247.5MB in the end (delta: 88.1MB). Free memory was 72.6MB in the beginning and 176.2MB in the end (delta: -103.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * TraceAbstraction took 64545.45ms. Allocated memory was 247.5MB in the beginning and 522.2MB in the end (delta: 274.7MB). Free memory was 175.2MB in the beginning and 312.9MB in the end (delta: -137.7MB). Peak memory consumption was 273.3MB. Max. memory is 16.1GB. * Witness Printer took 121.44ms. Allocated memory is still 522.2MB. Free memory was 312.9MB in the beginning and 308.7MB in the end (delta: 4.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 444]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.4s, OverallIterations: 32, TraceHistogramMax: 34, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 33.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6773 SdHoareTripleChecker+Valid, 14.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6773 mSDsluCounter, 657 SdHoareTripleChecker+Invalid, 11.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 559 mSDsCounter, 976 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35564 IncrementalHoareTripleChecker+Invalid, 36540 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 976 mSolverCounterUnsat, 98 mSDtfsCounter, 35564 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2759 GetRequests, 730 SyntacticMatches, 39 SemanticMatches, 1990 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25161 ImplicationChecksByTransitivity, 35.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=419occurred in iteration=27, InterpolantAutomatonStates: 1074, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 32 MinimizatonAttempts, 65 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 27.2s InterpolantComputationTime, 5032 NumberOfCodeBlocks, 5032 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 5348 ConstructedInterpolants, 0 QuantifiedInterpolants, 10873 SizeOfPredicates, 0 NumberOfNonLiveVariables, 912 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 36 InterpolantComputations, 30 PerfectInterpolantSequences, 1156/4426 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Location Invariant Derived location invariant: (((2 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 59]: Location Invariant Derived location invariant: (((7 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 383]: Location Invariant Derived location invariant: (((main__x == 61) && (main__y == 61)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 161]: Location Invariant Derived location invariant: (((main__x == 24) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 323]: Location Invariant Derived location invariant: (((51 == main__y) && (51 == main__x)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 77]: Location Invariant Derived location invariant: (((10 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 233]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (36 == main__x)) - InvariantResult [Line: 251]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (39 == main__x)) - InvariantResult [Line: 203]: Location Invariant Derived location invariant: (((31 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 281]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (44 == main__x)) - InvariantResult [Line: 149]: Location Invariant Derived location invariant: (((22 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 47]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (5 == main__x)) - InvariantResult [Line: 197]: Location Invariant Derived location invariant: (((main__y == 50) && (30 == main__x)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 119]: Location Invariant Derived location invariant: (((main__y == 50) && (17 == main__x)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 215]: Location Invariant Derived location invariant: (((33 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 239]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (37 == main__x)) - InvariantResult [Line: 299]: Location Invariant Derived location invariant: (((main__y == 50) && (47 == main__x)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 359]: Location Invariant Derived location invariant: (((\old(__return_1121) == __return_1121) && (57 == main__x)) && (57 == main__y)) - InvariantResult [Line: 137]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (20 == main__x)) - InvariantResult [Line: 245]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (38 == main__x)) - InvariantResult [Line: 335]: Location Invariant Derived location invariant: (((53 == main__y) && (53 == main__x)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 395]: Location Invariant Derived location invariant: (((63 == main__x) && (63 == main__y)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 125]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (18 == main__x)) - InvariantResult [Line: 287]: Location Invariant Derived location invariant: (((main__y == 50) && (45 == main__x)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 65]: Location Invariant Derived location invariant: (((8 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 305]: Location Invariant Derived location invariant: (((48 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 401]: Location Invariant Derived location invariant: (((64 == main__x) && (64 == main__y)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 269]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (42 == main__x)) - InvariantResult [Line: 311]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (49 == main__x)) - InvariantResult [Line: 71]: Location Invariant Derived location invariant: (((9 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 131]: Location Invariant Derived location invariant: (((main__y == 50) && (19 == main__x)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 191]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (29 == main__x)) - InvariantResult [Line: 347]: Location Invariant Derived location invariant: (((55 == main__x) && (\old(__return_1121) == __return_1121)) && (55 == main__y)) - InvariantResult [Line: 377]: Location Invariant Derived location invariant: (((60 == main__x) && (60 == main__y)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 41]: Location Invariant Derived location invariant: (((4 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 167]: Location Invariant Derived location invariant: (((25 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 407]: Location Invariant Derived location invariant: (((65 == main__y) && (\old(__return_1121) == __return_1121)) && (65 == main__x)) - InvariantResult [Line: 35]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (3 == main__x)) - InvariantResult [Line: 371]: Location Invariant Derived location invariant: (((59 == main__y) && (\old(__return_1121) == __return_1121)) && (59 == main__x)) - InvariantResult [Line: 329]: Location Invariant Derived location invariant: (((52 == main__y) && (\old(__return_1121) == __return_1121)) && (52 == main__x)) - InvariantResult [Line: 107]: Location Invariant Derived location invariant: (((15 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 341]: Location Invariant Derived location invariant: (((main__y == 54) && (main__x == 54)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 420]: Location Invariant Derived location invariant: ((((((((((((((((((((((((((((((((((((74 == main__x) && (\old(__return_1121) == __return_1121)) && (74 == main__y)) || (((76 == main__y) && (76 == main__x)) && (\old(__return_1121) == __return_1121))) || (((73 == main__x) && (\old(__return_1121) == __return_1121)) && (73 == main__y))) || (((81 == main__y) && (\old(__return_1121) == __return_1121)) && (81 == main__x))) || (((87 == main__x) && (\old(__return_1121) == __return_1121)) && (87 == main__y))) || (((68 == main__x) && (\old(__return_1121) == __return_1121)) && (68 == main__y))) || (((97 == main__x) && (\old(__return_1121) == __return_1121)) && (97 == main__y))) || (((\old(__return_1121) == __return_1121) && (main__x == 93)) && (main__y == 93))) || (((\old(__return_1121) == __return_1121) && (77 == main__x)) && (77 == main__y))) || (((90 == main__x) && (\old(__return_1121) == __return_1121)) && (90 == main__y))) || (((95 == main__y) && (\old(__return_1121) == __return_1121)) && (95 == main__x))) || (((89 == main__y) && (89 == main__x)) && (\old(__return_1121) == __return_1121))) || (((98 == main__x) && (98 == main__y)) && (\old(__return_1121) == __return_1121))) || (((\old(__return_1121) == __return_1121) && (92 == main__y)) && (92 == main__x))) || (((main__y == 86) && (\old(__return_1121) == __return_1121)) && (main__x == 86))) || (((72 == main__x) && (72 == main__y)) && (\old(__return_1121) == __return_1121))) || (((79 == main__x) && (79 == main__y)) && (\old(__return_1121) == __return_1121))) || (((main__x == 96) && (main__y == 96)) && (\old(__return_1121) == __return_1121))) || (((84 == main__x) && (\old(__return_1121) == __return_1121)) && (84 == main__y))) || (((main__x == 83) && (\old(__return_1121) == __return_1121)) && (main__y == 83))) || (((78 == main__y) && (\old(__return_1121) == __return_1121)) && (78 == main__x))) || (((82 == main__x) && (\old(__return_1121) == __return_1121)) && (82 == main__y))) || (((main__x == 75) && (main__y == 75)) && (\old(__return_1121) == __return_1121))) || (((\old(__return_1121) == __return_1121) && (main__x == 80)) && (main__y == 80))) || (((main__y == 99) && (main__x == 99)) && (\old(__return_1121) == __return_1121))) || (((100 == main__y) && (100 <= main__x)) && (\old(__return_1121) == __return_1121))) || (((67 == main__x) && (67 == main__y)) && (\old(__return_1121) == __return_1121))) || (((85 == main__y) && (\old(__return_1121) == __return_1121)) && (85 == main__x))) || (((69 == main__y) && (\old(__return_1121) == __return_1121)) && (69 == main__x))) || (((88 == main__y) && (\old(__return_1121) == __return_1121)) && (88 == main__x))) || (((94 == main__y) && (94 == main__x)) && (\old(__return_1121) == __return_1121))) || (((71 == main__y) && (\old(__return_1121) == __return_1121)) && (71 == main__x))) || (((70 == main__x) && (\old(__return_1121) == __return_1121)) && (70 == main__y))) || (((91 == main__y) && (91 == main__x)) && (\old(__return_1121) == __return_1121))) - InvariantResult [Line: 83]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (11 == main__x)) - InvariantResult [Line: 185]: Location Invariant Derived location invariant: (((28 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 275]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (43 == main__x)) - InvariantResult [Line: 53]: Location Invariant Derived location invariant: (((main__y == 50) && (6 == main__x)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 179]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (main__x == 27)) - InvariantResult [Line: 353]: Location Invariant Derived location invariant: (((56 == main__x) && (\old(__return_1121) == __return_1121)) && (56 == main__y)) - InvariantResult [Line: 173]: Location Invariant Derived location invariant: (((26 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 413]: Location Invariant Derived location invariant: (((66 == main__y) && (66 == main__x)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 263]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (41 == main__x)) - InvariantResult [Line: 143]: Location Invariant Derived location invariant: (((21 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 95]: Location Invariant Derived location invariant: (((13 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 221]: Location Invariant Derived location invariant: (((main__y == 50) && (34 == main__x)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 365]: Location Invariant Derived location invariant: (((58 == main__y) && (\old(__return_1121) == __return_1121)) && (58 == main__x)) - InvariantResult [Line: 227]: Location Invariant Derived location invariant: (((35 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 113]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (16 == main__x)) - InvariantResult [Line: 23]: Location Invariant Derived location invariant: (((main__x == 1) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 89]: Location Invariant Derived location invariant: (((12 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 101]: Location Invariant Derived location invariant: (((14 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 155]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (23 == main__x)) - InvariantResult [Line: 389]: Location Invariant Derived location invariant: (((62 == main__x) && (62 == main__y)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 293]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (46 == main__x)) - InvariantResult [Line: 317]: Location Invariant Derived location invariant: (((main__y == 50) && (\old(__return_1121) == __return_1121)) && (main__x == 50)) - InvariantResult [Line: 209]: Location Invariant Derived location invariant: (((32 == main__x) && (main__y == 50)) && (\old(__return_1121) == __return_1121)) - InvariantResult [Line: 257]: Location Invariant Derived location invariant: (((main__y == 50) && (40 == main__x)) && (\old(__return_1121) == __return_1121)) RESULT: Ultimate proved your program to be correct! [2024-09-18 15:38:31,203 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE