./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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 09:48:38,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 09:48:38,091 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 09:48:38,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 09:48:38,095 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 09:48:38,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 09:48:38,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 09:48:38,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 09:48:38,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 09:48:38,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 09:48:38,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 09:48:38,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 09:48:38,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 09:48:38,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 09:48:38,119 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 09:48:38,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 09:48:38,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 09:48:38,120 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 09:48:38,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 09:48:38,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 09:48:38,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 09:48:38,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 09:48:38,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 09:48:38,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 09:48:38,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 09:48:38,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 09:48:38,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 09:48:38,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 09:48:38,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 09:48:38,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 09:48:38,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 09:48:38,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 09:48:38,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:48:38,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 09:48:38,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 09:48:38,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 09:48:38,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 09:48:38,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 09:48:38,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 09:48:38,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 09:48:38,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 09:48:38,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 09:48:38,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 09:48:38,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 09:48:38,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 09:48:38,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 09:48:38,422 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 09:48:38,423 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 09:48:38,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-09-13 09:48:39,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 09:48:40,106 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 09:48:40,107 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-09-13 09:48:40,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/52705ae76/cd2744ad502349268989c8774a0ad8d8/FLAG2f40a23b4 [2024-09-13 09:48:40,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/52705ae76/cd2744ad502349268989c8774a0ad8d8 [2024-09-13 09:48:40,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 09:48:40,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 09:48:40,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 09:48:40,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 09:48:40,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 09:48:40,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173f9556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40, skipping insertion in model container [2024-09-13 09:48:40,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,173 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 09:48:40,344 WARN L247 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] [2024-09-13 09:48:40,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:48:40,358 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 09:48:40,373 WARN L247 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] [2024-09-13 09:48:40,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:48:40,390 INFO L204 MainTranslator]: Completed translation [2024-09-13 09:48:40,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40 WrapperNode [2024-09-13 09:48:40,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 09:48:40,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 09:48:40,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 09:48:40,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 09:48:40,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,409 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,421 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 09:48:40,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 09:48:40,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 09:48:40,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 09:48:40,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 09:48:40,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,435 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,451 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]. [2024-09-13 09:48:40,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 09:48:40,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 09:48:40,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 09:48:40,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 09:48:40,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (1/1) ... [2024-09-13 09:48:40,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:48:40,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:40,508 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) [2024-09-13 09:48:40,510 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 [2024-09-13 09:48:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 09:48:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 09:48:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 09:48:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 09:48:40,552 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-13 09:48:40,552 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-13 09:48:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-13 09:48:40,553 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-13 09:48:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 09:48:40,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 09:48:40,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 09:48:40,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 09:48:40,608 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 09:48:40,610 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 09:48:40,749 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-13 09:48:40,749 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 09:48:40,793 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 09:48:40,793 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 09:48:40,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:48:40 BoogieIcfgContainer [2024-09-13 09:48:40,793 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 09:48:40,797 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 09:48:40,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 09:48:40,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 09:48:40,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 09:48:40" (1/3) ... [2024-09-13 09:48:40,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad0f497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:48:40, skipping insertion in model container [2024-09-13 09:48:40,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:40" (2/3) ... [2024-09-13 09:48:40,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad0f497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:48:40, skipping insertion in model container [2024-09-13 09:48:40,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:48:40" (3/3) ... [2024-09-13 09:48:40,823 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2024-09-13 09:48:40,840 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 09:48:40,840 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 09:48:40,903 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 09:48:40,909 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;@10b0001b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 09:48:40,909 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 09:48:40,913 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) [2024-09-13 09:48:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 09:48:40,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:40,920 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:40,920 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:40,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:40,925 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-09-13 09:48:40,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:40,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247100069] [2024-09-13 09:48:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:40,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 09:48:41,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:41,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247100069] [2024-09-13 09:48:41,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247100069] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:48:41,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:48:41,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 09:48:41,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240725699] [2024-09-13 09:48:41,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:48:41,209 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:48:41,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:41,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:48:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:48:41,231 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) [2024-09-13 09:48:41,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:41,343 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-13 09:48:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:48:41,346 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 [2024-09-13 09:48:41,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:41,355 INFO L225 Difference]: With dead ends: 44 [2024-09-13 09:48:41,356 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 09:48:41,359 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 [2024-09-13 09:48:41,362 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-13 09:48:41,363 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] [2024-09-13 09:48:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 09:48:41,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-13 09:48:41,415 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) [2024-09-13 09:48:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-13 09:48:41,418 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-09-13 09:48:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:41,421 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-13 09:48:41,422 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) [2024-09-13 09:48:41,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-13 09:48:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 09:48:41,425 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:41,426 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:41,427 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 09:48:41,427 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:41,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:41,428 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-09-13 09:48:41,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:41,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818400441] [2024-09-13 09:48:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:41,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 09:48:41,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818400441] [2024-09-13 09:48:41,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818400441] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:48:41,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:48:41,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 09:48:41,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857428915] [2024-09-13 09:48:41,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:48:41,591 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:48:41,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:41,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:48:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:48:41,594 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) [2024-09-13 09:48:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:41,668 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-13 09:48:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:48:41,671 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 [2024-09-13 09:48:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:41,672 INFO L225 Difference]: With dead ends: 36 [2024-09-13 09:48:41,672 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 09:48:41,673 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 [2024-09-13 09:48:41,674 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:41,676 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:48:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 09:48:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-13 09:48:41,684 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) [2024-09-13 09:48:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-13 09:48:41,686 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-09-13 09:48:41,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:41,686 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-13 09:48:41,687 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) [2024-09-13 09:48:41,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:41,688 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-13 09:48:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 09:48:41,689 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:41,690 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] [2024-09-13 09:48:41,690 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 09:48:41,691 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:41,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-09-13 09:48:41,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:41,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030448377] [2024-09-13 09:48:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:41,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-13 09:48:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:41,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:41,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030448377] [2024-09-13 09:48:41,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030448377] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:41,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642417079] [2024-09-13 09:48:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:41,876 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) [2024-09-13 09:48:41,878 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 09:48:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 09:48:41,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:42,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:42,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642417079] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:42,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:42,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-13 09:48:42,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699008169] [2024-09-13 09:48:42,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:42,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 09:48:42,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 09:48:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-13 09:48:42,303 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) [2024-09-13 09:48:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:42,451 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-09-13 09:48:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 09:48:42,452 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 [2024-09-13 09:48:42,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:42,453 INFO L225 Difference]: With dead ends: 58 [2024-09-13 09:48:42,453 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 09:48:42,454 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 [2024-09-13 09:48:42,455 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 [2024-09-13 09:48:42,455 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] [2024-09-13 09:48:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 09:48:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-13 09:48:42,462 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) [2024-09-13 09:48:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-09-13 09:48:42,463 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-09-13 09:48:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:42,464 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-09-13 09:48:42,464 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) [2024-09-13 09:48:42,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-09-13 09:48:42,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 09:48:42,465 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:42,465 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] [2024-09-13 09:48:42,480 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 09:48:42,669 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 [2024-09-13 09:48:42,670 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:42,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-09-13 09:48:42,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:42,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695827334] [2024-09-13 09:48:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:42,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:42,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:42,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695827334] [2024-09-13 09:48:42,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695827334] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378573351] [2024-09-13 09:48:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:42,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:42,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:42,894 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) [2024-09-13 09:48:42,896 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 09:48:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 09:48:42,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:43,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:43,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:43,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378573351] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:43,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:43,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-13 09:48:43,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433333175] [2024-09-13 09:48:43,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:43,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 09:48:43,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:43,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 09:48:43,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-13 09:48:43,198 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) [2024-09-13 09:48:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:43,403 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-09-13 09:48:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 09:48:43,404 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 [2024-09-13 09:48:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:43,407 INFO L225 Difference]: With dead ends: 56 [2024-09-13 09:48:43,407 INFO L226 Difference]: Without dead ends: 52 [2024-09-13 09:48:43,408 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 [2024-09-13 09:48:43,409 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 [2024-09-13 09:48:43,409 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] [2024-09-13 09:48:43,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-13 09:48:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-13 09:48:43,425 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) [2024-09-13 09:48:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-09-13 09:48:43,426 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-09-13 09:48:43,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:43,426 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-09-13 09:48:43,427 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) [2024-09-13 09:48:43,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-09-13 09:48:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-13 09:48:43,429 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:43,429 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] [2024-09-13 09:48:43,446 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 09:48:43,632 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 [2024-09-13 09:48:43,633 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:43,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:43,633 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-09-13 09:48:43,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:43,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756264335] [2024-09-13 09:48:43,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:43,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:43,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:43,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:43,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:43,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:43,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-13 09:48:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:43,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 09:48:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 09:48:43,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:43,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756264335] [2024-09-13 09:48:43,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756264335] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:43,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531287460] [2024-09-13 09:48:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:43,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:43,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:43,767 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) [2024-09-13 09:48:43,769 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 09:48:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:43,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 09:48:43,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 09:48:43,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:48:44,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531287460] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:44,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:44,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-09-13 09:48:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832664306] [2024-09-13 09:48:44,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:44,233 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 09:48:44,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 09:48:44,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-13 09:48:44,234 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) [2024-09-13 09:48:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:44,474 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-09-13 09:48:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 09:48:44,474 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 [2024-09-13 09:48:44,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:44,476 INFO L225 Difference]: With dead ends: 112 [2024-09-13 09:48:44,480 INFO L226 Difference]: Without dead ends: 68 [2024-09-13 09:48:44,481 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-09-13 09:48:44,482 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:44,482 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 200 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:48:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-13 09:48:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-09-13 09:48:44,500 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) [2024-09-13 09:48:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-09-13 09:48:44,505 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-09-13 09:48:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:44,506 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-09-13 09:48:44,506 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) [2024-09-13 09:48:44,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:44,507 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-09-13 09:48:44,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 09:48:44,508 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:44,509 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] [2024-09-13 09:48:44,525 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 09:48:44,709 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 [2024-09-13 09:48:44,710 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:44,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:44,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-09-13 09:48:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:44,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675613854] [2024-09-13 09:48:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:44,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:44,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:44,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:44,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:44,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:44,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:44,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-13 09:48:44,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:44,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675613854] [2024-09-13 09:48:44,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675613854] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:44,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768219479] [2024-09-13 09:48:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:44,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:44,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:44,882 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) [2024-09-13 09:48:44,884 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 09:48:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:44,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 09:48:44,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 09:48:45,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:48:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768219479] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:45,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:45,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-09-13 09:48:45,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31540318] [2024-09-13 09:48:45,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:45,352 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 09:48:45,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 09:48:45,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-13 09:48:45,354 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) [2024-09-13 09:48:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:45,722 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-09-13 09:48:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 09:48:45,723 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 [2024-09-13 09:48:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:45,726 INFO L225 Difference]: With dead ends: 182 [2024-09-13 09:48:45,726 INFO L226 Difference]: Without dead ends: 122 [2024-09-13 09:48:45,727 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 [2024-09-13 09:48:45,728 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:45,728 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 343 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 09:48:45,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-13 09:48:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-09-13 09:48:45,758 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) [2024-09-13 09:48:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-09-13 09:48:45,765 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-09-13 09:48:45,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:45,766 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-09-13 09:48:45,766 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) [2024-09-13 09:48:45,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:45,767 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-09-13 09:48:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-13 09:48:45,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:45,773 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] [2024-09-13 09:48:45,793 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 09:48:45,974 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 [2024-09-13 09:48:45,975 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:45,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:45,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-09-13 09:48:45,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:45,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070812635] [2024-09-13 09:48:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:46,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:46,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:46,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:46,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:46,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:46,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:46,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:46,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 09:48:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-13 09:48:46,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:46,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070812635] [2024-09-13 09:48:46,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070812635] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:46,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66169296] [2024-09-13 09:48:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:46,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:46,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:46,191 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) [2024-09-13 09:48:46,193 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 09:48:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:46,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 09:48:46,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-13 09:48:46,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 09:48:46,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66169296] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:46,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:46,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2024-09-13 09:48:46,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241673938] [2024-09-13 09:48:46,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:46,868 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 09:48:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:46,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 09:48:46,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-13 09:48:46,869 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) [2024-09-13 09:48:47,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:47,226 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-09-13 09:48:47,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 09:48:47,227 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 [2024-09-13 09:48:47,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:47,230 INFO L225 Difference]: With dead ends: 252 [2024-09-13 09:48:47,230 INFO L226 Difference]: Without dead ends: 155 [2024-09-13 09:48:47,232 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2024-09-13 09:48:47,233 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-09-13 09:48:47,233 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] [2024-09-13 09:48:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-13 09:48:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-09-13 09:48:47,269 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) [2024-09-13 09:48:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-09-13 09:48:47,272 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-09-13 09:48:47,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:47,272 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-09-13 09:48:47,272 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) [2024-09-13 09:48:47,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:47,273 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-09-13 09:48:47,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-13 09:48:47,282 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:47,282 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] [2024-09-13 09:48:47,298 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 09:48:47,483 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 [2024-09-13 09:48:47,483 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:47,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:47,484 INFO L85 PathProgramCache]: Analyzing trace with hash -805611050, now seen corresponding path program 1 times [2024-09-13 09:48:47,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:47,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945684950] [2024-09-13 09:48:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:47,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 09:48:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-13 09:48:47,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945684950] [2024-09-13 09:48:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945684950] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696623325] [2024-09-13 09:48:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:47,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:47,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:47,918 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) [2024-09-13 09:48:47,919 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 09:48:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:47,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 09:48:47,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-13 09:48:48,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 129 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-09-13 09:48:49,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696623325] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:49,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:49,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-09-13 09:48:49,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955973923] [2024-09-13 09:48:49,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:49,084 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-13 09:48:49,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:49,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-13 09:48:49,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-09-13 09:48:49,086 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) [2024-09-13 09:48:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:49,552 INFO L93 Difference]: Finished difference Result 256 states and 494 transitions. [2024-09-13 09:48:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-13 09:48:49,553 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 [2024-09-13 09:48:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:49,555 INFO L225 Difference]: With dead ends: 256 [2024-09-13 09:48:49,555 INFO L226 Difference]: Without dead ends: 108 [2024-09-13 09:48:49,557 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 09:48:49,558 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 70 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:49,558 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 272 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 09:48:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-13 09:48:49,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2024-09-13 09:48:49,585 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) [2024-09-13 09:48:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2024-09-13 09:48:49,587 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 110 [2024-09-13 09:48:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:49,588 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2024-09-13 09:48:49,588 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) [2024-09-13 09:48:49,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2024-09-13 09:48:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-13 09:48:49,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:49,590 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] [2024-09-13 09:48:49,607 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 09:48:49,794 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 [2024-09-13 09:48:49,795 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:49,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:49,795 INFO L85 PathProgramCache]: Analyzing trace with hash -273902236, now seen corresponding path program 1 times [2024-09-13 09:48:49,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:49,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182786455] [2024-09-13 09:48:49,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:49,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:49,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:49,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:49,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 09:48:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-13 09:48:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-13 09:48:50,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:50,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182786455] [2024-09-13 09:48:50,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182786455] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:50,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755672357] [2024-09-13 09:48:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:50,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:50,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:50,204 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) [2024-09-13 09:48:50,206 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 09:48:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:50,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 09:48:50,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 89 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-09-13 09:48:50,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 94 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-09-13 09:48:50,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755672357] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:50,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:50,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 21 [2024-09-13 09:48:50,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015830699] [2024-09-13 09:48:50,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:50,958 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 09:48:50,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:50,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 09:48:50,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-13 09:48:50,959 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) [2024-09-13 09:48:51,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:51,320 INFO L93 Difference]: Finished difference Result 182 states and 269 transitions. [2024-09-13 09:48:51,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 09:48:51,320 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 [2024-09-13 09:48:51,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:51,322 INFO L225 Difference]: With dead ends: 182 [2024-09-13 09:48:51,322 INFO L226 Difference]: Without dead ends: 102 [2024-09-13 09:48:51,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 270 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-09-13 09:48:51,326 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:51,326 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 343 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 09:48:51,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-13 09:48:51,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-09-13 09:48:51,344 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) [2024-09-13 09:48:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 131 transitions. [2024-09-13 09:48:51,345 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 131 transitions. Word has length 123 [2024-09-13 09:48:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:51,346 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 131 transitions. [2024-09-13 09:48:51,346 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) [2024-09-13 09:48:51,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 131 transitions. [2024-09-13 09:48:51,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-13 09:48:51,350 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:51,350 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] [2024-09-13 09:48:51,369 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 09:48:51,551 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 [2024-09-13 09:48:51,551 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:51,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash -210930479, now seen corresponding path program 1 times [2024-09-13 09:48:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:51,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038102560] [2024-09-13 09:48:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:51,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:51,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:51,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:51,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:51,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:48:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-13 09:48:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 146 proven. 332 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-09-13 09:48:52,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:52,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038102560] [2024-09-13 09:48:52,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038102560] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:52,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329133342] [2024-09-13 09:48:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:52,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:52,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:52,378 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) [2024-09-13 09:48:52,379 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 09:48:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:52,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 09:48:52,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 173 proven. 199 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2024-09-13 09:48:52,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 173 proven. 213 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2024-09-13 09:48:53,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329133342] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:53,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:53,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 15] total 31 [2024-09-13 09:48:53,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646089836] [2024-09-13 09:48:53,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:53,905 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-13 09:48:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:53,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-13 09:48:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2024-09-13 09:48:53,907 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) [2024-09-13 09:48:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:54,572 INFO L93 Difference]: Finished difference Result 244 states and 433 transitions. [2024-09-13 09:48:54,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-13 09:48:54,572 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 [2024-09-13 09:48:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:54,575 INFO L225 Difference]: With dead ends: 244 [2024-09-13 09:48:54,575 INFO L226 Difference]: Without dead ends: 126 [2024-09-13 09:48:54,578 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 451 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=328, Invalid=1742, Unknown=0, NotChecked=0, Total=2070 [2024-09-13 09:48:54,579 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 70 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:54,579 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 512 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 09:48:54,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-13 09:48:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2024-09-13 09:48:54,601 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) [2024-09-13 09:48:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-09-13 09:48:54,602 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 204 [2024-09-13 09:48:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:54,603 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-09-13 09:48:54,603 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) [2024-09-13 09:48:54,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-09-13 09:48:54,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-09-13 09:48:54,607 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:54,607 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] [2024-09-13 09:48:54,625 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 09:48:54,808 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 [2024-09-13 09:48:54,808 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:54,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:54,809 INFO L85 PathProgramCache]: Analyzing trace with hash -134939570, now seen corresponding path program 2 times [2024-09-13 09:48:54,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:54,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072515383] [2024-09-13 09:48:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:54,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:54,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:54,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:48:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-13 09:48:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:48:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-13 09:48:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 130 proven. 259 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2024-09-13 09:48:55,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:55,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072515383] [2024-09-13 09:48:55,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072515383] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:55,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892036138] [2024-09-13 09:48:55,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:48:55,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:55,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:55,376 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) [2024-09-13 09:48:55,377 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 09:48:55,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:48:55,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:48:55,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 09:48:55,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 203 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2024-09-13 09:48:55,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 208 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2024-09-13 09:48:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892036138] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:56,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 22 [2024-09-13 09:48:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103269838] [2024-09-13 09:48:56,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:56,425 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-13 09:48:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-13 09:48:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-09-13 09:48:56,426 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) [2024-09-13 09:48:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:56,756 INFO L93 Difference]: Finished difference Result 222 states and 300 transitions. [2024-09-13 09:48:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 09:48:56,757 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 [2024-09-13 09:48:56,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:56,759 INFO L225 Difference]: With dead ends: 222 [2024-09-13 09:48:56,759 INFO L226 Difference]: Without dead ends: 129 [2024-09-13 09:48:56,761 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 517 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2024-09-13 09:48:56,761 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-09-13 09:48:56,761 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] [2024-09-13 09:48:56,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-13 09:48:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 106. [2024-09-13 09:48:56,774 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) [2024-09-13 09:48:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 136 transitions. [2024-09-13 09:48:56,777 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 136 transitions. Word has length 231 [2024-09-13 09:48:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:56,777 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 136 transitions. [2024-09-13 09:48:56,778 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) [2024-09-13 09:48:56,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2024-09-13 09:48:56,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-13 09:48:56,781 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:56,781 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] [2024-09-13 09:48:56,799 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 09:48:56,982 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 [2024-09-13 09:48:56,982 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:56,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:56,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2126407970, now seen corresponding path program 3 times [2024-09-13 09:48:56,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:56,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918349119] [2024-09-13 09:48:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:56,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:48:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-13 09:48:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:48:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 193 proven. 340 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-09-13 09:48:57,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:57,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918349119] [2024-09-13 09:48:57,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918349119] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:57,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381653010] [2024-09-13 09:48:57,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:48:57,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:57,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:57,743 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) [2024-09-13 09:48:57,747 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 09:48:57,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-13 09:48:57,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:48:57,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 09:48:57,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 294 proven. 58 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-09-13 09:48:57,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 294 proven. 66 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2024-09-13 09:48:58,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381653010] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:58,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10, 13] total 31 [2024-09-13 09:48:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345572521] [2024-09-13 09:48:58,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:58,929 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-13 09:48:58,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:58,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-13 09:48:58,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-09-13 09:48:58,931 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) [2024-09-13 09:48:59,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:59,461 INFO L93 Difference]: Finished difference Result 249 states and 363 transitions. [2024-09-13 09:48:59,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-13 09:48:59,464 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 [2024-09-13 09:48:59,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:59,466 INFO L225 Difference]: With dead ends: 249 [2024-09-13 09:48:59,466 INFO L226 Difference]: Without dead ends: 149 [2024-09-13 09:48:59,470 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 484 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=407, Invalid=2349, Unknown=0, NotChecked=0, Total=2756 [2024-09-13 09:48:59,470 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 88 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:59,470 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 379 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 09:48:59,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-13 09:48:59,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2024-09-13 09:48:59,488 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) [2024-09-13 09:48:59,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 169 transitions. [2024-09-13 09:48:59,490 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 169 transitions. Word has length 218 [2024-09-13 09:48:59,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:59,490 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 169 transitions. [2024-09-13 09:48:59,491 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) [2024-09-13 09:48:59,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 169 transitions. [2024-09-13 09:48:59,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-09-13 09:48:59,492 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:59,493 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] [2024-09-13 09:48:59,510 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 09:48:59,697 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 [2024-09-13 09:48:59,698 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:59,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2101186279, now seen corresponding path program 4 times [2024-09-13 09:48:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:59,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527069302] [2024-09-13 09:48:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:59,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:59,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:59,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:59,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:59,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:59,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:59,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:59,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:59,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:59,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:59,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:49:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-13 09:49:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-09-13 09:49:00,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527069302] [2024-09-13 09:49:00,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527069302] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:49:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087318150] [2024-09-13 09:49:00,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 09:49:00,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:00,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:00,133 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) [2024-09-13 09:49:00,134 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 09:49:00,235 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 09:49:00,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:49:00,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 09:49:00,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:49:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 141 proven. 34 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-13 09:49:00,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:49:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 143 proven. 37 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-13 09:49:00,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087318150] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:49:00,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:49:00,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 11] total 24 [2024-09-13 09:49:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956688885] [2024-09-13 09:49:00,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:49:00,920 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-13 09:49:00,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:00,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-13 09:49:00,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-09-13 09:49:00,921 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) [2024-09-13 09:49:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:01,237 INFO L93 Difference]: Finished difference Result 264 states and 347 transitions. [2024-09-13 09:49:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 09:49:01,238 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 [2024-09-13 09:49:01,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:01,240 INFO L225 Difference]: With dead ends: 264 [2024-09-13 09:49:01,241 INFO L226 Difference]: Without dead ends: 144 [2024-09-13 09:49:01,242 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 332 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-09-13 09:49:01,243 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 59 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:01,243 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 252 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:49:01,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-13 09:49:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2024-09-13 09:49:01,266 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) [2024-09-13 09:49:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2024-09-13 09:49:01,268 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 150 [2024-09-13 09:49:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:01,268 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2024-09-13 09:49:01,268 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) [2024-09-13 09:49:01,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2024-09-13 09:49:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-13 09:49:01,271 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:01,271 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] [2024-09-13 09:49:01,288 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-13 09:49:01,475 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 [2024-09-13 09:49:01,476 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:01,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:01,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1073615655, now seen corresponding path program 5 times [2024-09-13 09:49:01,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:01,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617609842] [2024-09-13 09:49:01,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:01,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:49:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:49:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-13 09:49:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:01,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-13 09:49:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:02,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:02,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:02,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:02,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:02,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:02,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:49:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:02,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:02,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 155 proven. 209 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2024-09-13 09:49:02,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:02,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617609842] [2024-09-13 09:49:02,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617609842] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:49:02,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846157813] [2024-09-13 09:49:02,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 09:49:02,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:02,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:02,030 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) [2024-09-13 09:49:02,031 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 09:49:02,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-13 09:49:02,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:49:02,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 09:49:02,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:49:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 638 proven. 46 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2024-09-13 09:49:02,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:49:03,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 143 proven. 256 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2024-09-13 09:49:03,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846157813] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:49:03,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:49:03,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-09-13 09:49:03,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256693057] [2024-09-13 09:49:03,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:49:03,064 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 09:49:03,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:03,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 09:49:03,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-13 09:49:03,065 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) [2024-09-13 09:49:03,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:03,320 INFO L93 Difference]: Finished difference Result 255 states and 341 transitions. [2024-09-13 09:49:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 09:49:03,320 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 [2024-09-13 09:49:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:03,322 INFO L225 Difference]: With dead ends: 255 [2024-09-13 09:49:03,323 INFO L226 Difference]: Without dead ends: 135 [2024-09-13 09:49:03,324 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 452 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2024-09-13 09:49:03,324 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:03,324 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 319 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:49:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-09-13 09:49:03,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2024-09-13 09:49:03,341 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) [2024-09-13 09:49:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2024-09-13 09:49:03,343 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 204 [2024-09-13 09:49:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:03,344 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2024-09-13 09:49:03,344 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) [2024-09-13 09:49:03,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2024-09-13 09:49:03,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-09-13 09:49:03,346 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:03,346 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] [2024-09-13 09:49:03,364 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-13 09:49:03,547 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 [2024-09-13 09:49:03,547 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:03,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:03,547 INFO L85 PathProgramCache]: Analyzing trace with hash 982134510, now seen corresponding path program 6 times [2024-09-13 09:49:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:03,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804420555] [2024-09-13 09:49:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:03,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:49:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:49:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:04,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-13 09:49:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:05,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:05,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:05,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:05,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:05,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:05,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:49:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:05,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:05,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-13 09:49:05,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:05,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804420555] [2024-09-13 09:49:05,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804420555] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:49:05,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579387977] [2024-09-13 09:49:05,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 09:49:05,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:05,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:05,137 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) [2024-09-13 09:49:05,139 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-13 09:49:05,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-09-13 09:49:05,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:49:05,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-09-13 09:49:05,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:49:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-13 09:49:05,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:49:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-13 09:49:06,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579387977] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:49:06,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:49:06,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2024-09-13 09:49:06,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786767122] [2024-09-13 09:49:06,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:49:06,367 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-13 09:49:06,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:06,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-13 09:49:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 09:49:06,368 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) [2024-09-13 09:49:06,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:06,620 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2024-09-13 09:49:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-13 09:49:06,620 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 [2024-09-13 09:49:06,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:06,622 INFO L225 Difference]: With dead ends: 140 [2024-09-13 09:49:06,622 INFO L226 Difference]: Without dead ends: 136 [2024-09-13 09:49:06,623 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-09-13 09:49:06,624 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 [2024-09-13 09:49:06,624 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] [2024-09-13 09:49:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-13 09:49:06,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2024-09-13 09:49:06,642 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) [2024-09-13 09:49:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2024-09-13 09:49:06,644 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 177 [2024-09-13 09:49:06,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:06,644 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2024-09-13 09:49:06,644 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) [2024-09-13 09:49:06,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:06,645 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2024-09-13 09:49:06,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-13 09:49:06,646 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:49:06,646 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] [2024-09-13 09:49:06,663 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-13 09:49:06,846 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 [2024-09-13 09:49:06,847 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:49:06,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash -790133168, now seen corresponding path program 7 times [2024-09-13 09:49:06,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:49:06,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732087583] [2024-09-13 09:49:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:49:06,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:49:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:06,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:49:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:06,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:49:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:49:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:49:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-13 09:49:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-13 09:49:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:49:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:49:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:49:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:49:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 221 proven. 250 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2024-09-13 09:49:07,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:49:07,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732087583] [2024-09-13 09:49:07,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732087583] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:49:07,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482464970] [2024-09-13 09:49:07,529 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 09:49:07,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:49:07,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:49:07,531 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) [2024-09-13 09:49:07,533 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-13 09:49:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:49:07,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-13 09:49:07,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:49:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 349 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-09-13 09:49:07,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:49:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 370 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2024-09-13 09:49:09,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482464970] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:49:09,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:49:09,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 17] total 31 [2024-09-13 09:49:09,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677849692] [2024-09-13 09:49:09,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:49:09,446 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-13 09:49:09,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:49:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-13 09:49:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-09-13 09:49:09,447 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) [2024-09-13 09:49:09,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:49:09,815 INFO L93 Difference]: Finished difference Result 251 states and 311 transitions. [2024-09-13 09:49:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-13 09:49:09,816 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 [2024-09-13 09:49:09,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:49:09,818 INFO L225 Difference]: With dead ends: 251 [2024-09-13 09:49:09,818 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 09:49:09,819 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 479 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2024-09-13 09:49:09,820 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 09:49:09,820 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 422 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 09:49:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 09:49:09,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 09:49:09,821 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) [2024-09-13 09:49:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 09:49:09,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 218 [2024-09-13 09:49:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:49:09,822 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 09:49:09,823 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) [2024-09-13 09:49:09,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:49:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 09:49:09,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 09:49:09,827 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 09:49:09,844 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-13 09:49:10,031 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 [2024-09-13 09:49:10,035 INFO L408 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:49:10,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 09:49:16,702 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 09:49:16,731 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 09:49:16,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 09:49:16 BoogieIcfgContainer [2024-09-13 09:49:16,735 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 09:49:16,736 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 09:49:16,736 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 09:49:16,736 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 09:49:16,737 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:48:40" (3/4) ... [2024-09-13 09:49:16,742 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 09:49:16,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 09:49:16,747 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 09:49:16,747 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-09-13 09:49:16,747 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-09-13 09:49:16,750 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-13 09:49:16,751 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-13 09:49:16,751 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 09:49:16,751 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 09:49:16,848 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 09:49:16,849 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 09:49:16,849 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 09:49:16,849 INFO L158 Benchmark]: Toolchain (without parser) took 36710.24ms. Allocated memory was 138.4MB in the beginning and 755.0MB in the end (delta: 616.6MB). Free memory was 84.9MB in the beginning and 550.6MB in the end (delta: -465.8MB). Peak memory consumption was 153.7MB. Max. memory is 16.1GB. [2024-09-13 09:49:16,850 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:49:16,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.44ms. Allocated memory is still 138.4MB. Free memory was 84.7MB in the beginning and 73.5MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 09:49:16,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.00ms. Allocated memory is still 138.4MB. Free memory was 73.5MB in the beginning and 72.5MB in the end (delta: 943.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:49:16,851 INFO L158 Benchmark]: Boogie Preprocessor took 37.15ms. Allocated memory is still 138.4MB. Free memory was 72.5MB in the beginning and 70.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 09:49:16,851 INFO L158 Benchmark]: RCFGBuilder took 333.30ms. Allocated memory is still 138.4MB. Free memory was 70.7MB in the beginning and 109.8MB in the end (delta: -39.1MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2024-09-13 09:49:16,852 INFO L158 Benchmark]: TraceAbstraction took 35938.23ms. Allocated memory was 138.4MB in the beginning and 755.0MB in the end (delta: 616.6MB). Free memory was 109.1MB in the beginning and 554.8MB in the end (delta: -445.7MB). Peak memory consumption was 460.9MB. Max. memory is 16.1GB. [2024-09-13 09:49:16,852 INFO L158 Benchmark]: Witness Printer took 113.36ms. Allocated memory is still 755.0MB. Free memory was 554.8MB in the beginning and 550.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 09:49:16,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.44ms. Allocated memory is still 138.4MB. Free memory was 84.7MB in the beginning and 73.5MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.00ms. Allocated memory is still 138.4MB. Free memory was 73.5MB in the beginning and 72.5MB in the end (delta: 943.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.15ms. Allocated memory is still 138.4MB. Free memory was 72.5MB in the beginning and 70.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.30ms. Allocated memory is still 138.4MB. Free memory was 70.7MB in the beginning and 109.8MB in the end (delta: -39.1MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * TraceAbstraction took 35938.23ms. Allocated memory was 138.4MB in the beginning and 755.0MB in the end (delta: 616.6MB). Free memory was 109.1MB in the beginning and 554.8MB in the end (delta: -445.7MB). Peak memory consumption was 460.9MB. Max. memory is 16.1GB. * Witness Printer took 113.36ms. Allocated memory is still 755.0MB. Free memory was 554.8MB in the beginning and 550.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 29.2s, OverallIterations: 16, TraceHistogramMax: 17, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.1s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 700 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 628 mSDsluCounter, 5616 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5089 mSDsCounter, 582 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6316 IncrementalHoareTripleChecker+Invalid, 6898 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 582 mSolverCounterUnsat, 527 mSDtfsCounter, 6316 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4525 GetRequests, 4050 SyntacticMatches, 62 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3495 ImplicationChecksByTransitivity, 4.3s 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 18.9s 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! [2024-09-13 09:49:16,883 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