./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.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 f1d7dc9d 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/recursive-simple/fibo_2calls_6-1.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 e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --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-f1d7dc9-m [2024-09-20 13:05:53,202 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:05:53,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:05:53,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:05:53,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:05:53,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:05:53,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:05:53,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:05:53,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:05:53,282 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:05:53,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:05:53,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:05:53,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:05:53,283 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:05:53,284 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:05:53,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:05:53,284 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:05:53,285 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:05:53,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:05:53,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:05:53,285 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:05:53,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:05:53,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:05:53,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:05:53,286 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:05:53,286 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:05:53,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:05:53,286 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:05:53,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:05:53,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:05:53,287 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:05:53,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:05:53,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:05:53,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:05:53,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:05:53,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:05:53,288 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:05:53,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:05:53,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:05:53,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:05:53,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:05:53,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:05:53,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 13:05:53,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:05:53,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:05:53,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:05:53,540 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:05:53,540 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:05:53,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-09-20 13:05:54,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:05:54,945 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:05:54,945 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-09-20 13:05:54,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/bb955a4c4/b7b073fcb11d4927860dc70479e2c783/FLAG7a2aeb3b3 [2024-09-20 13:05:55,369 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/bb955a4c4/b7b073fcb11d4927860dc70479e2c783 [2024-09-20 13:05:55,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:05:55,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 13:05:55,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:05:55,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:05:55,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:05:55,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6748c00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55, skipping insertion in model container [2024-09-20 13:05:55,380 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,396 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:05:55,504 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/recursive-simple/fibo_2calls_6-1.c[946,959] [2024-09-20 13:05:55,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:05:55,516 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 13:05:55,527 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/recursive-simple/fibo_2calls_6-1.c[946,959] [2024-09-20 13:05:55,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:05:55,542 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:05:55,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55 WrapperNode [2024-09-20 13:05:55,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:05:55,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:05:55,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:05:55,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:05:55,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,557 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 13:05:55,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:05:55,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:05:55,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:05:55,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:05:55,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,573 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]. [2024-09-20 13:05:55,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,577 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,578 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:05:55,585 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:05:55,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:05:55,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:05:55,586 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (1/1) ... [2024-09-20 13:05:55,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:05:55,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:05:55,614 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) [2024-09-20 13:05:55,618 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 [2024-09-20 13:05:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:05:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 13:05:55,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 13:05:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 13:05:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-20 13:05:55,654 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-20 13:05:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-20 13:05:55,654 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-20 13:05:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 13:05:55,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 13:05:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:05:55,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:05:55,705 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:05:55,706 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:05:55,839 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-20 13:05:55,842 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:05:55,857 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:05:55,857 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-20 13:05:55,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:05:55 BoogieIcfgContainer [2024-09-20 13:05:55,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:05:55,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:05:55,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:05:55,861 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:05:55,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:05:55" (1/3) ... [2024-09-20 13:05:55,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8ec56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:05:55, skipping insertion in model container [2024-09-20 13:05:55,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:05:55" (2/3) ... [2024-09-20 13:05:55,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8ec56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:05:55, skipping insertion in model container [2024-09-20 13:05:55,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:05:55" (3/3) ... [2024-09-20 13:05:55,863 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2024-09-20 13:05:55,875 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:05:55,875 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 13:05:55,911 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:05:55,916 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;@64d19919, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:05:55,916 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 13:05:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 13:05:55,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-20 13:05:55,924 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:05:55,924 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:05:55,924 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:05:55,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-09-20 13:05:55,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:05:55,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802008758] [2024-09-20 13:05:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:05:55,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:05:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:05:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:05:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:05:56,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:05:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802008758] [2024-09-20 13:05:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802008758] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:05:56,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:05:56,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:05:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252784941] [2024-09-20 13:05:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:05:56,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:05:56,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:05:56,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:05:56,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:05:56,217 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:05:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:05:56,298 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-20 13:05:56,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:05:56,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-20 13:05:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:05:56,309 INFO L225 Difference]: With dead ends: 44 [2024-09-20 13:05:56,309 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 13:05:56,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:05:56,315 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:05:56,316 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:05:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 13:05:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-20 13:05:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-20 13:05:56,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-20 13:05:56,353 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-09-20 13:05:56,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:05:56,353 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-20 13:05:56,353 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:05:56,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-20 13:05:56,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-20 13:05:56,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:05:56,356 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:05:56,357 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:05:56,357 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:05:56,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:56,358 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-09-20 13:05:56,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:05:56,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123613901] [2024-09-20 13:05:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:05:56,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:05:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:05:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:05:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:05:56,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:05:56,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123613901] [2024-09-20 13:05:56,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123613901] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:05:56,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:05:56,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:05:56,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296472764] [2024-09-20 13:05:56,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:05:56,467 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:05:56,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:05:56,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:05:56,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:05:56,468 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:05:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:05:56,524 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-20 13:05:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:05:56,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-20 13:05:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:05:56,529 INFO L225 Difference]: With dead ends: 36 [2024-09-20 13:05:56,530 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 13:05:56,530 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:05:56,532 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:05:56,532 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:05:56,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 13:05:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-20 13:05:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-20 13:05:56,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-20 13:05:56,545 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-09-20 13:05:56,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:05:56,546 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-20 13:05:56,546 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:05:56,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-20 13:05:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-20 13:05:56,549 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:05:56,549 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:05:56,549 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 13:05:56,549 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:05:56,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:56,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-09-20 13:05:56,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:05:56,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240242194] [2024-09-20 13:05:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:05:56,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:05:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:05:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:05:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:05:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-20 13:05:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:05:56,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:05:56,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240242194] [2024-09-20 13:05:56,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240242194] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:05:56,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254734281] [2024-09-20 13:05:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:05:56,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:05:56,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:05:56,683 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) [2024-09-20 13:05:56,686 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:05:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:56,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 13:05:56,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:05:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:05:56,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:05:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:05:56,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254734281] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:05:56,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:05:56,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-20 13:05:56,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612617063] [2024-09-20 13:05:56,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:05:56,975 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 13:05:56,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:05:56,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 13:05:56,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-20 13:05:56,976 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-20 13:05:57,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:05:57,116 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-09-20 13:05:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 13:05:57,117 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) Word has length 26 [2024-09-20 13:05:57,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:05:57,118 INFO L225 Difference]: With dead ends: 58 [2024-09-20 13:05:57,118 INFO L226 Difference]: Without dead ends: 34 [2024-09-20 13:05:57,118 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-20 13:05:57,119 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:05:57,119 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:05:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-20 13:05:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-20 13:05:57,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-20 13:05:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-09-20 13:05:57,131 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-09-20 13:05:57,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:05:57,131 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-09-20 13:05:57,131 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-20 13:05:57,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:57,131 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-09-20 13:05:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-20 13:05:57,144 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:05:57,145 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:05:57,158 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 13:05:57,348 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:05:57,349 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:05:57,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:57,349 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-09-20 13:05:57,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:05:57,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19203195] [2024-09-20 13:05:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:05:57,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:05:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:57,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:05:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:57,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:05:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:57,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:05:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:57,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:05:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:05:57,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:05:57,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19203195] [2024-09-20 13:05:57,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19203195] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:05:57,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414710571] [2024-09-20 13:05:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:05:57,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:05:57,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:05:57,460 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) [2024-09-20 13:05:57,461 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:05:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:57,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 13:05:57,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:05:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:05:57,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:05:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:05:57,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414710571] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:05:57,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:05:57,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-20 13:05:57,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997206420] [2024-09-20 13:05:57,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:05:57,707 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 13:05:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:05:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 13:05:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-20 13:05:57,708 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 13:05:57,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:05:57,880 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-09-20 13:05:57,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 13:05:57,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 27 [2024-09-20 13:05:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:05:57,882 INFO L225 Difference]: With dead ends: 56 [2024-09-20 13:05:57,882 INFO L226 Difference]: Without dead ends: 52 [2024-09-20 13:05:57,883 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-09-20 13:05:57,883 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:05:57,883 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 182 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:05:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-20 13:05:57,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-20 13:05:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 states have internal predecessors, (39), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-20 13:05:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-09-20 13:05:57,899 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-09-20 13:05:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:05:57,900 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-09-20 13:05:57,900 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 13:05:57,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-09-20 13:05:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-20 13:05:57,902 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:05:57,902 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:05:57,914 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 13:05:58,106 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:05:58,108 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:05:58,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-09-20 13:05:58,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:05:58,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672615752] [2024-09-20 13:05:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:05:58,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:05:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:58,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:05:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:58,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:05:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:58,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:05:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:58,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:05:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:58,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-20 13:05:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:58,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 13:05:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 13:05:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:05:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672615752] [2024-09-20 13:05:58,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672615752] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:05:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066234567] [2024-09-20 13:05:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:05:58,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:05:58,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:05:58,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:05:58,215 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:05:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:58,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 13:05:58,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:05:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-20 13:05:58,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:05:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:05:58,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066234567] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:05:58,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:05:58,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-09-20 13:05:58,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013988335] [2024-09-20 13:05:58,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:05:58,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-20 13:05:58,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:05:58,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-20 13:05:58,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-20 13:05:58,585 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-20 13:05:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:05:58,790 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-09-20 13:05:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-20 13:05:58,790 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) Word has length 39 [2024-09-20 13:05:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:05:58,792 INFO L225 Difference]: With dead ends: 112 [2024-09-20 13:05:58,795 INFO L226 Difference]: Without dead ends: 68 [2024-09-20 13:05:58,796 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-09-20 13:05:58,796 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:05:58,796 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 200 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:05:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-20 13:05:58,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-09-20 13:05:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 44 states have internal predecessors, (51), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) [2024-09-20 13:05:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-09-20 13:05:58,809 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-09-20 13:05:58,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:05:58,809 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-09-20 13:05:58,809 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-20 13:05:58,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:58,810 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-09-20 13:05:58,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-20 13:05:58,811 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:05:58,811 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:05:58,824 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 13:05:59,011 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:05:59,012 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:05:59,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-09-20 13:05:59,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:05:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177446955] [2024-09-20 13:05:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:05:59,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:05:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:59,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:05:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:59,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:05:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:59,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:05:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:59,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:05:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:59,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:05:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:59,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:05:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-20 13:05:59,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:05:59,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177446955] [2024-09-20 13:05:59,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177446955] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:05:59,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634501445] [2024-09-20 13:05:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:05:59,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:05:59,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:05:59,155 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:05:59,156 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:05:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:05:59,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 13:05:59,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:05:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 13:05:59,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:05:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:05:59,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634501445] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:05:59,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:05:59,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-09-20 13:05:59,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500077894] [2024-09-20 13:05:59,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:05:59,503 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-20 13:05:59,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:05:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-20 13:05:59,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-20 13:05:59,504 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-20 13:05:59,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:05:59,772 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-09-20 13:05:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 13:05:59,773 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) Word has length 40 [2024-09-20 13:05:59,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:05:59,775 INFO L225 Difference]: With dead ends: 182 [2024-09-20 13:05:59,775 INFO L226 Difference]: Without dead ends: 122 [2024-09-20 13:05:59,776 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-09-20 13:05:59,777 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:05:59,777 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 343 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:05:59,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-20 13:05:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-09-20 13:05:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.21875) internal successors, (78), 67 states have internal predecessors, (78), 23 states have call successors, (23), 9 states have call predecessors, (23), 15 states have return successors, (64), 26 states have call predecessors, (64), 22 states have call successors, (64) [2024-09-20 13:05:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-09-20 13:05:59,808 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-09-20 13:05:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:05:59,809 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-09-20 13:05:59,809 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-20 13:05:59,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:05:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-09-20 13:05:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-20 13:05:59,813 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:05:59,813 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:05:59,826 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-20 13:06:00,014 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:00,014 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:06:00,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:00,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-09-20 13:06:00,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:06:00,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21803874] [2024-09-20 13:06:00,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:00,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:06:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:00,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:06:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:00,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:06:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:00,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:00,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:00,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:00,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:00,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:00,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:06:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-20 13:06:00,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:06:00,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21803874] [2024-09-20 13:06:00,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21803874] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:06:00,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459386064] [2024-09-20 13:06:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:00,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:00,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:06:00,184 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:06:00,185 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 13:06:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:00,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:06:00,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:06:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-20 13:06:00,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:06:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 13:06:00,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459386064] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:06:00,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:06:00,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2024-09-20 13:06:00,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862840805] [2024-09-20 13:06:00,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:06:00,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 13:06:00,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:06:00,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 13:06:00,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-20 13:06:00,717 INFO L87 Difference]: Start difference. First operand 103 states and 165 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-20 13:06:00,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:06:00,981 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-09-20 13:06:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 13:06:00,982 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) Word has length 54 [2024-09-20 13:06:00,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:06:00,984 INFO L225 Difference]: With dead ends: 252 [2024-09-20 13:06:00,987 INFO L226 Difference]: Without dead ends: 155 [2024-09-20 13:06:00,988 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2024-09-20 13:06:00,989 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:06:00,989 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 256 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:06:00,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-20 13:06:01,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-09-20 13:06:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 26 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (67), 28 states have call predecessors, (67), 25 states have call successors, (67) [2024-09-20 13:06:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-09-20 13:06:01,015 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-09-20 13:06:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:06:01,016 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-09-20 13:06:01,016 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-20 13:06:01,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-09-20 13:06:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-20 13:06:01,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:06:01,021 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:06:01,033 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-20 13:06:01,222 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-20 13:06:01,222 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:06:01,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash -805611050, now seen corresponding path program 1 times [2024-09-20 13:06:01,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:06:01,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931342022] [2024-09-20 13:06:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:01,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:06:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:06:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:06:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 13:06:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-20 13:06:01,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:06:01,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931342022] [2024-09-20 13:06:01,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931342022] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:06:01,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740870644] [2024-09-20 13:06:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:01,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:01,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:06:01,489 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:06:01,490 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 13:06:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:01,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 13:06:01,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:06:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-20 13:06:01,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:06:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 129 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-09-20 13:06:02,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740870644] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:06:02,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:06:02,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-09-20 13:06:02,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543510394] [2024-09-20 13:06:02,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:06:02,327 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-20 13:06:02,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:06:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-20 13:06:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-09-20 13:06:02,328 INFO L87 Difference]: Start difference. First operand 112 states and 180 transitions. Second operand has 23 states, 22 states have (on average 3.409090909090909) internal successors, (75), 23 states have internal predecessors, (75), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-09-20 13:06:02,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:06:02,649 INFO L93 Difference]: Finished difference Result 256 states and 494 transitions. [2024-09-20 13:06:02,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-20 13:06:02,649 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.409090909090909) internal successors, (75), 23 states have internal predecessors, (75), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) Word has length 110 [2024-09-20 13:06:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:06:02,651 INFO L225 Difference]: With dead ends: 256 [2024-09-20 13:06:02,651 INFO L226 Difference]: Without dead ends: 108 [2024-09-20 13:06:02,652 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 13:06:02,653 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 70 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:06:02,653 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 272 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:06:02,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-20 13:06:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2024-09-20 13:06:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 60 states have internal predecessors, (70), 18 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (39), 20 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-20 13:06:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2024-09-20 13:06:02,674 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 110 [2024-09-20 13:06:02,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:06:02,675 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2024-09-20 13:06:02,676 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.409090909090909) internal successors, (75), 23 states have internal predecessors, (75), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-09-20 13:06:02,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2024-09-20 13:06:02,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-20 13:06:02,678 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:06:02,678 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:06:02,689 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-20 13:06:02,881 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:02,882 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:06:02,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:02,882 INFO L85 PathProgramCache]: Analyzing trace with hash -273902236, now seen corresponding path program 1 times [2024-09-20 13:06:02,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:06:02,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244435562] [2024-09-20 13:06:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:02,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:06:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:02,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:06:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:02,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:06:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:02,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 13:06:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 13:06:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-20 13:06:03,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:06:03,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244435562] [2024-09-20 13:06:03,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244435562] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:06:03,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321094781] [2024-09-20 13:06:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:03,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:03,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:06:03,144 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:06:03,145 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 13:06:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:03,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:06:03,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:06:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 89 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-09-20 13:06:03,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:06:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 94 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-09-20 13:06:03,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321094781] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:06:03,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:06:03,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 21 [2024-09-20 13:06:03,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559595244] [2024-09-20 13:06:03,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:06:03,709 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-20 13:06:03,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:06:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-20 13:06:03,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-20 13:06:03,710 INFO L87 Difference]: Start difference. First operand 91 states and 127 transitions. Second operand has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (27), 12 states have call predecessors, (27), 14 states have call successors, (27) [2024-09-20 13:06:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:06:03,980 INFO L93 Difference]: Finished difference Result 182 states and 269 transitions. [2024-09-20 13:06:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-20 13:06:03,980 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (27), 12 states have call predecessors, (27), 14 states have call successors, (27) Word has length 123 [2024-09-20 13:06:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:06:03,981 INFO L225 Difference]: With dead ends: 182 [2024-09-20 13:06:03,981 INFO L226 Difference]: Without dead ends: 102 [2024-09-20 13:06:03,982 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 270 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-09-20 13:06:03,983 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:06:03,983 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 343 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:06:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-20 13:06:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-09-20 13:06:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 18 states have call successors, (18), 10 states have call predecessors, (18), 15 states have return successors, (40), 21 states have call predecessors, (40), 17 states have call successors, (40) [2024-09-20 13:06:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 131 transitions. [2024-09-20 13:06:04,002 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 131 transitions. Word has length 123 [2024-09-20 13:06:04,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:06:04,003 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 131 transitions. [2024-09-20 13:06:04,003 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (27), 12 states have call predecessors, (27), 14 states have call successors, (27) [2024-09-20 13:06:04,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:04,003 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 131 transitions. [2024-09-20 13:06:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-20 13:06:04,006 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:06:04,006 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:06:04,019 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 13:06:04,207 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:04,207 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:06:04,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:04,208 INFO L85 PathProgramCache]: Analyzing trace with hash -210930479, now seen corresponding path program 1 times [2024-09-20 13:06:04,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:06:04,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452217960] [2024-09-20 13:06:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:04,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:06:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:06:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:06:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 13:06:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 13:06:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 146 proven. 332 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-09-20 13:06:04,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:06:04,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452217960] [2024-09-20 13:06:04,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452217960] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:06:04,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375170149] [2024-09-20 13:06:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:04,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:04,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:06:04,755 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:06:04,757 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 13:06:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:04,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 13:06:04,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:06:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 173 proven. 199 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2024-09-20 13:06:04,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:06:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 173 proven. 213 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2024-09-20 13:06:05,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375170149] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:06:05,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:06:05,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 15] total 31 [2024-09-20 13:06:05,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577869225] [2024-09-20 13:06:05,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:06:05,953 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-20 13:06:05,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:06:05,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-20 13:06:05,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2024-09-20 13:06:05,954 INFO L87 Difference]: Start difference. First operand 96 states and 131 transitions. Second operand has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 23 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-20 13:06:06,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:06:06,459 INFO L93 Difference]: Finished difference Result 244 states and 433 transitions. [2024-09-20 13:06:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-20 13:06:06,460 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 23 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) Word has length 204 [2024-09-20 13:06:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:06:06,462 INFO L225 Difference]: With dead ends: 244 [2024-09-20 13:06:06,462 INFO L226 Difference]: Without dead ends: 126 [2024-09-20 13:06:06,463 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 451 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=1742, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 13:06:06,464 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 70 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 13:06:06,464 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 512 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 13:06:06,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-20 13:06:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2024-09-20 13:06:06,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 70 states have internal predecessors, (82), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (37), 21 states have call predecessors, (37), 19 states have call successors, (37) [2024-09-20 13:06:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-09-20 13:06:06,474 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 204 [2024-09-20 13:06:06,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:06:06,475 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-09-20 13:06:06,475 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 23 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-20 13:06:06,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:06,476 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-09-20 13:06:06,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-09-20 13:06:06,479 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:06:06,479 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:06:06,492 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-20 13:06:06,683 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:06,684 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:06:06,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash -134939570, now seen corresponding path program 2 times [2024-09-20 13:06:06,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:06:06,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614931919] [2024-09-20 13:06:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:06:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:06,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:06:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:06,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:06:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:06,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:06,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:06,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:06,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:06,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:06,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:06,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:06,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 13:06:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 13:06:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 13:06:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 13:06:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 130 proven. 259 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2024-09-20 13:06:07,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:06:07,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614931919] [2024-09-20 13:06:07,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614931919] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:06:07,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979501647] [2024-09-20 13:06:07,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:06:07,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:07,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:06:07,107 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:06:07,108 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 13:06:07,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:06:07,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:06:07,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:06:07,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:06:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 203 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2024-09-20 13:06:07,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:06:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 208 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2024-09-20 13:06:07,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979501647] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:06:07,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:06:07,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 22 [2024-09-20 13:06:07,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662753971] [2024-09-20 13:06:07,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:06:07,857 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 13:06:07,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:06:07,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 13:06:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-09-20 13:06:07,858 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 22 states, 20 states have (on average 3.65) internal successors, (73), 22 states have internal predecessors, (73), 15 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2024-09-20 13:06:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:06:08,123 INFO L93 Difference]: Finished difference Result 222 states and 300 transitions. [2024-09-20 13:06:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 13:06:08,124 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.65) internal successors, (73), 22 states have internal predecessors, (73), 15 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) Word has length 231 [2024-09-20 13:06:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:06:08,125 INFO L225 Difference]: With dead ends: 222 [2024-09-20 13:06:08,125 INFO L226 Difference]: Without dead ends: 129 [2024-09-20 13:06:08,126 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 517 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2024-09-20 13:06:08,126 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:06:08,126 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 340 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:06:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-20 13:06:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 106. [2024-09-20 13:06:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 70 states have internal predecessors, (82), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (34), 21 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-20 13:06:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 136 transitions. [2024-09-20 13:06:08,136 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 136 transitions. Word has length 231 [2024-09-20 13:06:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:06:08,136 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 136 transitions. [2024-09-20 13:06:08,136 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.65) internal successors, (73), 22 states have internal predecessors, (73), 15 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2024-09-20 13:06:08,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2024-09-20 13:06:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-20 13:06:08,138 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:06:08,138 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 14, 14, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:06:08,150 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-20 13:06:08,342 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 13:06:08,343 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:06:08,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:08,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2126407970, now seen corresponding path program 3 times [2024-09-20 13:06:08,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:06:08,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161739098] [2024-09-20 13:06:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:08,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:06:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:06:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:06:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 13:06:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 13:06:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 13:06:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 193 proven. 340 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-09-20 13:06:08,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:06:08,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161739098] [2024-09-20 13:06:08,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161739098] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:06:08,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375682449] [2024-09-20 13:06:08,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:06:08,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:08,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:06:08,896 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:06:08,906 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 13:06:08,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-20 13:06:08,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:06:08,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 13:06:08,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:06:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 294 proven. 58 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-09-20 13:06:09,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:06:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 294 proven. 66 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2024-09-20 13:06:09,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375682449] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:06:09,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:06:09,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10, 13] total 31 [2024-09-20 13:06:09,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392003036] [2024-09-20 13:06:09,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:06:09,892 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-20 13:06:09,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:06:09,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-20 13:06:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-09-20 13:06:09,893 INFO L87 Difference]: Start difference. First operand 106 states and 136 transitions. Second operand has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 31 states have internal predecessors, (88), 19 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (37), 23 states have call predecessors, (37), 19 states have call successors, (37) [2024-09-20 13:06:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:06:10,370 INFO L93 Difference]: Finished difference Result 249 states and 363 transitions. [2024-09-20 13:06:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-20 13:06:10,370 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 31 states have internal predecessors, (88), 19 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (37), 23 states have call predecessors, (37), 19 states have call successors, (37) Word has length 218 [2024-09-20 13:06:10,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:06:10,373 INFO L225 Difference]: With dead ends: 249 [2024-09-20 13:06:10,373 INFO L226 Difference]: Without dead ends: 149 [2024-09-20 13:06:10,375 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 484 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=407, Invalid=2349, Unknown=0, NotChecked=0, Total=2756 [2024-09-20 13:06:10,376 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 90 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 13:06:10,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 377 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 13:06:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-20 13:06:10,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2024-09-20 13:06:10,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.1) internal successors, (99), 86 states have internal predecessors, (99), 24 states have call successors, (24), 20 states have call predecessors, (24), 15 states have return successors, (46), 23 states have call predecessors, (46), 23 states have call successors, (46) [2024-09-20 13:06:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 169 transitions. [2024-09-20 13:06:10,406 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 169 transitions. Word has length 218 [2024-09-20 13:06:10,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:06:10,406 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 169 transitions. [2024-09-20 13:06:10,406 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 31 states have internal predecessors, (88), 19 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (37), 23 states have call predecessors, (37), 19 states have call successors, (37) [2024-09-20 13:06:10,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 169 transitions. [2024-09-20 13:06:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-09-20 13:06:10,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:06:10,408 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:06:10,420 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-20 13:06:10,608 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-20 13:06:10,608 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:06:10,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:10,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2101186279, now seen corresponding path program 4 times [2024-09-20 13:06:10,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:06:10,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137725478] [2024-09-20 13:06:10,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:10,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:06:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:06:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:06:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 13:06:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 13:06:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-09-20 13:06:10,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:06:10,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137725478] [2024-09-20 13:06:10,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137725478] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:06:10,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710349055] [2024-09-20 13:06:10,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 13:06:10,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:10,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:06:10,921 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:06:10,922 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 13:06:11,008 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 13:06:11,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:06:11,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:06:11,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:06:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 141 proven. 34 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-20 13:06:11,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:06:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 143 proven. 37 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 13:06:11,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710349055] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:06:11,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:06:11,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 11] total 24 [2024-09-20 13:06:11,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110804064] [2024-09-20 13:06:11,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:06:11,532 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 13:06:11,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:06:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 13:06:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-09-20 13:06:11,533 INFO L87 Difference]: Start difference. First operand 130 states and 169 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 16 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (29), 16 states have call predecessors, (29), 16 states have call successors, (29) [2024-09-20 13:06:11,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:06:11,748 INFO L93 Difference]: Finished difference Result 264 states and 347 transitions. [2024-09-20 13:06:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 13:06:11,748 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 16 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (29), 16 states have call predecessors, (29), 16 states have call successors, (29) Word has length 150 [2024-09-20 13:06:11,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:06:11,750 INFO L225 Difference]: With dead ends: 264 [2024-09-20 13:06:11,750 INFO L226 Difference]: Without dead ends: 144 [2024-09-20 13:06:11,751 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 332 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-09-20 13:06:11,752 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 59 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:06:11,753 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 252 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:06:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-20 13:06:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2024-09-20 13:06:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.1) internal successors, (99), 86 states have internal predecessors, (99), 24 states have call successors, (24), 20 states have call predecessors, (24), 15 states have return successors, (39), 23 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-20 13:06:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2024-09-20 13:06:11,764 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 150 [2024-09-20 13:06:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:06:11,764 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2024-09-20 13:06:11,765 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 16 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (29), 16 states have call predecessors, (29), 16 states have call successors, (29) [2024-09-20 13:06:11,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2024-09-20 13:06:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-20 13:06:11,766 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:06:11,766 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:06:11,778 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-20 13:06:11,970 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:11,971 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:06:11,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:11,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1073615655, now seen corresponding path program 5 times [2024-09-20 13:06:11,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:06:11,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420350577] [2024-09-20 13:06:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:11,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:06:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:06:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:06:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 13:06:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 13:06:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 13:06:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 155 proven. 209 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2024-09-20 13:06:12,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:06:12,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420350577] [2024-09-20 13:06:12,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420350577] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:06:12,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473621840] [2024-09-20 13:06:12,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 13:06:12,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:12,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:06:12,325 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:06:12,326 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 13:06:12,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-20 13:06:12,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:06:12,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 13:06:12,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:06:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 638 proven. 46 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2024-09-20 13:06:12,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:06:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 143 proven. 256 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2024-09-20 13:06:13,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473621840] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:06:13,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:06:13,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-09-20 13:06:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519573862] [2024-09-20 13:06:13,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:06:13,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 13:06:13,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:06:13,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 13:06:13,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-20 13:06:13,209 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 25 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 14 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2024-09-20 13:06:13,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:06:13,383 INFO L93 Difference]: Finished difference Result 255 states and 341 transitions. [2024-09-20 13:06:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 13:06:13,383 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 14 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) Word has length 204 [2024-09-20 13:06:13,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:06:13,385 INFO L225 Difference]: With dead ends: 255 [2024-09-20 13:06:13,385 INFO L226 Difference]: Without dead ends: 135 [2024-09-20 13:06:13,386 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 452 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2024-09-20 13:06:13,387 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 33 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:06:13,387 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 319 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:06:13,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-09-20 13:06:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2024-09-20 13:06:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.086021505376344) internal successors, (101), 88 states have internal predecessors, (101), 24 states have call successors, (24), 21 states have call predecessors, (24), 15 states have return successors, (36), 23 states have call predecessors, (36), 23 states have call successors, (36) [2024-09-20 13:06:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2024-09-20 13:06:13,400 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 204 [2024-09-20 13:06:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:06:13,400 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2024-09-20 13:06:13,400 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 14 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2024-09-20 13:06:13,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2024-09-20 13:06:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-09-20 13:06:13,401 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:06:13,401 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:06:13,416 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-20 13:06:13,602 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 13:06:13,602 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:06:13,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:13,602 INFO L85 PathProgramCache]: Analyzing trace with hash 982134510, now seen corresponding path program 6 times [2024-09-20 13:06:13,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:06:13,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815832710] [2024-09-20 13:06:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:06:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:13,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:06:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:13,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:06:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 13:06:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 13:06:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-20 13:06:14,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:06:14,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815832710] [2024-09-20 13:06:14,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815832710] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:06:14,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093841783] [2024-09-20 13:06:14,690 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 13:06:14,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:14,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:06:14,692 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:06:14,693 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-20 13:06:14,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-09-20 13:06:14,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:06:14,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-09-20 13:06:14,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:06:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-20 13:06:14,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:06:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-20 13:06:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093841783] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:06:15,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:06:15,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2024-09-20 13:06:15,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115673940] [2024-09-20 13:06:15,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:06:15,470 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 13:06:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:06:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 13:06:15,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 13:06:15,471 INFO L87 Difference]: Start difference. First operand 133 states and 161 transitions. Second operand has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-20 13:06:15,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:06:15,692 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2024-09-20 13:06:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-20 13:06:15,692 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) Word has length 177 [2024-09-20 13:06:15,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:06:15,693 INFO L225 Difference]: With dead ends: 140 [2024-09-20 13:06:15,694 INFO L226 Difference]: Without dead ends: 136 [2024-09-20 13:06:15,694 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 13:06:15,695 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:06:15,695 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1445 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:06:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-20 13:06:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2024-09-20 13:06:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.086021505376344) internal successors, (101), 88 states have internal predecessors, (101), 24 states have call successors, (24), 21 states have call predecessors, (24), 15 states have return successors, (35), 23 states have call predecessors, (35), 23 states have call successors, (35) [2024-09-20 13:06:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2024-09-20 13:06:15,708 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 177 [2024-09-20 13:06:15,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:06:15,708 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2024-09-20 13:06:15,708 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-20 13:06:15,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:15,708 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2024-09-20 13:06:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-20 13:06:15,709 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:06:15,709 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:06:15,721 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-20 13:06:15,910 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 13:06:15,910 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:06:15,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash -790133168, now seen corresponding path program 7 times [2024-09-20 13:06:15,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:06:15,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76509990] [2024-09-20 13:06:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:06:15,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:06:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:06:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:06:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 13:06:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 13:06:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 13:06:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:06:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 13:06:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:06:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:06:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 221 proven. 250 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2024-09-20 13:06:16,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:06:16,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76509990] [2024-09-20 13:06:16,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76509990] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:06:16,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291921420] [2024-09-20 13:06:16,372 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 13:06:16,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:06:16,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:06:16,374 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:06:16,375 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-20 13:06:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:06:16,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-20 13:06:16,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:06:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 349 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-09-20 13:06:16,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:06:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 370 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2024-09-20 13:06:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291921420] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:06:17,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:06:17,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 17] total 31 [2024-09-20 13:06:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756802192] [2024-09-20 13:06:17,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:06:17,985 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-20 13:06:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:06:17,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-20 13:06:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-09-20 13:06:17,987 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 17 states have call predecessors, (39), 24 states have call successors, (39) [2024-09-20 13:06:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:06:18,292 INFO L93 Difference]: Finished difference Result 251 states and 311 transitions. [2024-09-20 13:06:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-20 13:06:18,293 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 17 states have call predecessors, (39), 24 states have call successors, (39) Word has length 218 [2024-09-20 13:06:18,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:06:18,294 INFO L225 Difference]: With dead ends: 251 [2024-09-20 13:06:18,294 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:06:18,295 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 479 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 13:06:18,296 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 44 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:06:18,297 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 422 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:06:18,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:06:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:06:18,297 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) [2024-09-20 13:06:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:06:18,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 218 [2024-09-20 13:06:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:06:18,298 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:06:18,298 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 17 states have call predecessors, (39), 24 states have call successors, (39) [2024-09-20 13:06:18,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:06:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:06:18,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:06:18,301 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 13:06:18,316 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-20 13:06:18,505 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 13:06:18,508 INFO L408 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:06:18,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 13:06:23,752 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:06:23,774 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-20 13:06:23,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:06:23 BoogieIcfgContainer [2024-09-20 13:06:23,775 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:06:23,776 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 13:06:23,776 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 13:06:23,776 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 13:06:23,776 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:05:55" (3/4) ... [2024-09-20 13:06:23,778 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 13:06:23,823 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 13:06:23,823 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 13:06:23,823 INFO L158 Benchmark]: Toolchain (without parser) took 28452.29ms. Allocated memory was 165.7MB in the beginning and 721.4MB in the end (delta: 555.7MB). Free memory was 135.1MB in the beginning and 520.4MB in the end (delta: -385.3MB). Peak memory consumption was 170.4MB. Max. memory is 16.1GB. [2024-09-20 13:06:23,824 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:06:23,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.65ms. Allocated memory is still 165.7MB. Free memory was 135.1MB in the beginning and 124.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 13:06:23,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 13.75ms. Allocated memory is still 165.7MB. Free memory was 124.6MB in the beginning and 123.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:06:23,824 INFO L158 Benchmark]: Boogie Preprocessor took 26.80ms. Allocated memory is still 165.7MB. Free memory was 123.5MB in the beginning and 121.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:06:23,824 INFO L158 Benchmark]: RCFGBuilder took 272.61ms. Allocated memory is still 165.7MB. Free memory was 121.4MB in the beginning and 133.6MB in the end (delta: -12.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 13:06:23,824 INFO L158 Benchmark]: TraceAbstraction took 27916.57ms. Allocated memory was 165.7MB in the beginning and 721.4MB in the end (delta: 555.7MB). Free memory was 132.5MB in the beginning and 522.5MB in the end (delta: -390.0MB). Peak memory consumption was 439.4MB. Max. memory is 16.1GB. [2024-09-20 13:06:23,824 INFO L158 Benchmark]: Witness Printer took 47.37ms. Allocated memory is still 721.4MB. Free memory was 522.5MB in the beginning and 520.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:06:23,825 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.65ms. Allocated memory is still 165.7MB. Free memory was 135.1MB in the beginning and 124.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 13.75ms. Allocated memory is still 165.7MB. Free memory was 124.6MB in the beginning and 123.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.80ms. Allocated memory is still 165.7MB. Free memory was 123.5MB in the beginning and 121.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 272.61ms. Allocated memory is still 165.7MB. Free memory was 121.4MB in the beginning and 133.6MB in the end (delta: -12.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 27916.57ms. Allocated memory was 165.7MB in the beginning and 721.4MB in the end (delta: 555.7MB). Free memory was 132.5MB in the beginning and 522.5MB in the end (delta: -390.0MB). Peak memory consumption was 439.4MB. Max. memory is 16.1GB. * Witness Printer took 47.37ms. Allocated memory is still 721.4MB. Free memory was 522.5MB in the beginning and 520.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 41]: 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 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.6s, OverallIterations: 16, TraceHistogramMax: 17, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 700 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 630 mSDsluCounter, 5614 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5087 mSDsCounter, 577 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6265 IncrementalHoareTripleChecker+Invalid, 6842 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 577 mSolverCounterUnsat, 527 mSDtfsCounter, 6265 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4525 GetRequests, 4050 SyntacticMatches, 62 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3495 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=14, InterpolantAutomatonStates: 315, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 176 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 3669 NumberOfCodeBlocks, 3436 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 5446 ConstructedInterpolants, 0 QuantifiedInterpolants, 9330 SizeOfPredicates, 44 NumberOfNonLiveVariables, 3742 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 44 InterpolantComputations, 2 PerfectInterpolantSequences, 19216/24261 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 - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Ensures: (((((((((2 == \result) && (3 == \old(n))) || ((\result == 1) && (\old(n) == 1))) || (5 < \old(n))) || ((3 == \result) && (\old(n) == 4))) || (\old(n) < 1)) || ((5 == \result) && (5 == \old(n)))) || ((\result == 1) && (2 == \old(n)))) && (((\result == 0) || (\old(n) == 1)) || (1 < \old(n)))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: ((\result == 0) || (0 < \old(n))) RESULT: Ultimate proved your program to be correct! [2024-09-20 13:06:23,844 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