./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-27b4987-m [2024-09-21 12:28:15,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 12:28:15,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 12:28:15,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 12:28:15,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 12:28:15,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 12:28:15,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 12:28:15,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 12:28:15,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 12:28:15,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 12:28:15,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 12:28:15,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 12:28:15,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 12:28:15,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 12:28:15,981 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 12:28:15,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 12:28:15,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 12:28:15,982 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 12:28:15,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 12:28:15,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 12:28:15,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 12:28:15,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 12:28:15,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 12:28:15,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 12:28:15,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 12:28:15,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 12:28:15,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 12:28:15,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 12:28:15,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 12:28:15,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 12:28:15,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 12:28:15,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 12:28:15,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:28:15,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 12:28:15,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 12:28:15,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 12:28:15,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 12:28:15,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 12:28:15,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 12:28:15,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 12:28:15,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 12:28:15,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 12:28:15,989 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 12:28:16,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 12:28:16,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 12:28:16,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 12:28:16,275 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 12:28:16,275 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 12:28:16,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-09-21 12:28:17,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 12:28:17,979 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 12:28:17,979 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-09-21 12:28:17,988 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/dbc4792a7/1b67ddc7001545a0baba3cc45a349d06/FLAG2e17321cf [2024-09-21 12:28:18,004 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/dbc4792a7/1b67ddc7001545a0baba3cc45a349d06 [2024-09-21 12:28:18,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 12:28:18,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 12:28:18,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 12:28:18,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 12:28:18,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 12:28:18,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746e36c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18, skipping insertion in model container [2024-09-21 12:28:18,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 12:28:18,184 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2024-09-21 12:28:18,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:28:18,197 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 12:28:18,211 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2024-09-21 12:28:18,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:28:18,226 INFO L204 MainTranslator]: Completed translation [2024-09-21 12:28:18,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18 WrapperNode [2024-09-21 12:28:18,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 12:28:18,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 12:28:18,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 12:28:18,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 12:28:18,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,291 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 12:28:18,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 12:28:18,292 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 12:28:18,293 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 12:28:18,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 12:28:18,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,305 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,315 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]. [2024-09-21 12:28:18,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 12:28:18,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 12:28:18,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 12:28:18,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 12:28:18,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (1/1) ... [2024-09-21 12:28:18,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:28:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:18,354 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) [2024-09-21 12:28:18,356 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 [2024-09-21 12:28:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 12:28:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 12:28:18,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 12:28:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 12:28:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-21 12:28:18,404 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-21 12:28:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-21 12:28:18,406 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-21 12:28:18,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 12:28:18,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 12:28:18,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 12:28:18,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 12:28:18,477 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 12:28:18,481 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 12:28:18,664 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-21 12:28:18,666 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 12:28:18,701 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 12:28:18,703 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-21 12:28:18,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:28:18 BoogieIcfgContainer [2024-09-21 12:28:18,703 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 12:28:18,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 12:28:18,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 12:28:18,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 12:28:18,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:28:18" (1/3) ... [2024-09-21 12:28:18,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b67787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:28:18, skipping insertion in model container [2024-09-21 12:28:18,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:18" (2/3) ... [2024-09-21 12:28:18,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b67787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:28:18, skipping insertion in model container [2024-09-21 12:28:18,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:28:18" (3/3) ... [2024-09-21 12:28:18,715 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2024-09-21 12:28:18,732 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 12:28:18,733 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 12:28:18,796 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 12:28:18,806 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;@49950306, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 12:28:18,806 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 12:28:18,811 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) [2024-09-21 12:28:18,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-21 12:28:18,819 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:18,819 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:28:18,820 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:18,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:18,827 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-09-21 12:28:18,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:18,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806444068] [2024-09-21 12:28:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:18,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:28:19,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:19,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806444068] [2024-09-21 12:28:19,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806444068] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:28:19,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:28:19,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:28:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39161538] [2024-09-21 12:28:19,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:28:19,170 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:28:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:28:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:28:19,198 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) [2024-09-21 12:28:19,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:19,301 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-21 12:28:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:28:19,304 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 [2024-09-21 12:28:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:19,312 INFO L225 Difference]: With dead ends: 44 [2024-09-21 12:28:19,312 INFO L226 Difference]: Without dead ends: 32 [2024-09-21 12:28:19,316 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 [2024-09-21 12:28:19,322 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 [2024-09-21 12:28:19,324 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] [2024-09-21 12:28:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-21 12:28:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-21 12:28:19,364 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) [2024-09-21 12:28:19,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-21 12:28:19,369 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-09-21 12:28:19,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:19,370 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-21 12:28:19,371 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) [2024-09-21 12:28:19,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-21 12:28:19,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-21 12:28:19,374 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:19,374 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:28:19,375 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 12:28:19,376 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:19,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:19,376 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-09-21 12:28:19,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:19,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170518605] [2024-09-21 12:28:19,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:19,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:28:19,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:19,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170518605] [2024-09-21 12:28:19,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170518605] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:28:19,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:28:19,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:28:19,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599715279] [2024-09-21 12:28:19,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:28:19,504 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:28:19,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:28:19,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:28:19,509 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) [2024-09-21 12:28:19,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:19,573 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-21 12:28:19,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:28:19,574 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 [2024-09-21 12:28:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:19,575 INFO L225 Difference]: With dead ends: 36 [2024-09-21 12:28:19,575 INFO L226 Difference]: Without dead ends: 32 [2024-09-21 12:28:19,576 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 [2024-09-21 12:28:19,577 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 [2024-09-21 12:28:19,577 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] [2024-09-21 12:28:19,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-21 12:28:19,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-21 12:28:19,585 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) [2024-09-21 12:28:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-21 12:28:19,587 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-09-21 12:28:19,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:19,587 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-21 12:28:19,588 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) [2024-09-21 12:28:19,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-21 12:28:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-21 12:28:19,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:19,590 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] [2024-09-21 12:28:19,590 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-21 12:28:19,590 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:19,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-09-21 12:28:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952545012] [2024-09-21 12:28:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-21 12:28:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 12:28:19,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:19,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952545012] [2024-09-21 12:28:19,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952545012] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:19,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802670909] [2024-09-21 12:28:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:19,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:19,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:19,851 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) [2024-09-21 12:28:19,853 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 12:28:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:19,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-21 12:28:19,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 12:28:20,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 12:28:20,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802670909] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:20,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:20,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-21 12:28:20,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170520808] [2024-09-21 12:28:20,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:20,282 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-21 12:28:20,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-21 12:28:20,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-21 12:28:20,285 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) [2024-09-21 12:28:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:20,489 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-09-21 12:28:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 12:28:20,490 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 [2024-09-21 12:28:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:20,492 INFO L225 Difference]: With dead ends: 58 [2024-09-21 12:28:20,492 INFO L226 Difference]: Without dead ends: 34 [2024-09-21 12:28:20,493 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 [2024-09-21 12:28:20,494 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:20,494 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 12:28:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-21 12:28:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-21 12:28:20,505 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) [2024-09-21 12:28:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-09-21 12:28:20,506 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-09-21 12:28:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:20,507 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-09-21 12:28:20,507 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) [2024-09-21 12:28:20,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-09-21 12:28:20,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-21 12:28:20,509 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:20,509 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] [2024-09-21 12:28:20,523 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 12:28:20,711 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 [2024-09-21 12:28:20,712 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:20,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-09-21 12:28:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:20,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569990656] [2024-09-21 12:28:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:20,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:20,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:20,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:20,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:20,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 12:28:20,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:20,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569990656] [2024-09-21 12:28:20,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569990656] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:20,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235664912] [2024-09-21 12:28:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:20,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:20,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:20,919 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) [2024-09-21 12:28:20,922 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 12:28:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:20,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-21 12:28:20,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 12:28:21,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 12:28:21,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235664912] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:21,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:21,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-21 12:28:21,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439750004] [2024-09-21 12:28:21,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:21,225 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-21 12:28:21,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:21,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-21 12:28:21,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-21 12:28:21,227 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) [2024-09-21 12:28:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:21,420 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-09-21 12:28:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 12:28:21,420 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 [2024-09-21 12:28:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:21,423 INFO L225 Difference]: With dead ends: 56 [2024-09-21 12:28:21,426 INFO L226 Difference]: Without dead ends: 52 [2024-09-21 12:28:21,427 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 [2024-09-21 12:28:21,428 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 [2024-09-21 12:28:21,428 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] [2024-09-21 12:28:21,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-21 12:28:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-21 12:28:21,447 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) [2024-09-21 12:28:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-09-21 12:28:21,451 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-09-21 12:28:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:21,452 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-09-21 12:28:21,452 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) [2024-09-21 12:28:21,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:21,454 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-09-21 12:28:21,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-21 12:28:21,455 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:21,457 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] [2024-09-21 12:28:21,475 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 12:28:21,658 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 [2024-09-21 12:28:21,658 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:21,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:21,659 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-09-21 12:28:21,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:21,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965958981] [2024-09-21 12:28:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:21,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:21,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:21,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:21,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:21,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:21,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-21 12:28:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:21,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 12:28:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-21 12:28:21,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:21,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965958981] [2024-09-21 12:28:21,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965958981] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:21,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074903199] [2024-09-21 12:28:21,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:21,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:21,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:21,815 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) [2024-09-21 12:28:21,819 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 12:28:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:21,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-21 12:28:21,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-21 12:28:21,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 12:28:22,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074903199] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:22,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:22,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-09-21 12:28:22,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349511044] [2024-09-21 12:28:22,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:22,271 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-21 12:28:22,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:22,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-21 12:28:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-21 12:28:22,272 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) [2024-09-21 12:28:22,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:22,504 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-09-21 12:28:22,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-21 12:28:22,504 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 [2024-09-21 12:28:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:22,506 INFO L225 Difference]: With dead ends: 112 [2024-09-21 12:28:22,507 INFO L226 Difference]: Without dead ends: 68 [2024-09-21 12:28:22,508 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 [2024-09-21 12:28:22,509 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:22,509 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 200 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:28:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-21 12:28:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-09-21 12:28:22,527 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) [2024-09-21 12:28:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-09-21 12:28:22,529 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-09-21 12:28:22,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:22,529 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-09-21 12:28:22,530 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) [2024-09-21 12:28:22,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-09-21 12:28:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-21 12:28:22,532 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:22,532 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] [2024-09-21 12:28:22,552 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-21 12:28:22,736 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 [2024-09-21 12:28:22,737 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:22,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-09-21 12:28:22,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:22,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721379302] [2024-09-21 12:28:22,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:22,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:22,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:22,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:22,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:22,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:22,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:22,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-21 12:28:22,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721379302] [2024-09-21 12:28:22,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721379302] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503483869] [2024-09-21 12:28:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:22,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:22,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:22,913 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) [2024-09-21 12:28:22,914 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 12:28:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:22,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-21 12:28:22,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-21 12:28:23,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 12:28:23,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503483869] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:23,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-09-21 12:28:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828130460] [2024-09-21 12:28:23,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:23,406 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-21 12:28:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-21 12:28:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-21 12:28:23,408 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) [2024-09-21 12:28:23,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:23,782 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-09-21 12:28:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-21 12:28:23,782 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 [2024-09-21 12:28:23,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:23,786 INFO L225 Difference]: With dead ends: 182 [2024-09-21 12:28:23,788 INFO L226 Difference]: Without dead ends: 122 [2024-09-21 12:28:23,790 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 [2024-09-21 12:28:23,791 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 [2024-09-21 12:28:23,791 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] [2024-09-21 12:28:23,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-21 12:28:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-09-21 12:28:23,820 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) [2024-09-21 12:28:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-09-21 12:28:23,826 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-09-21 12:28:23,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:23,827 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-09-21 12:28:23,827 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) [2024-09-21 12:28:23,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-09-21 12:28:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-21 12:28:23,831 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:23,832 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] [2024-09-21 12:28:23,851 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-21 12:28:24,035 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 [2024-09-21 12:28:24,036 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:24,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-09-21 12:28:24,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:24,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621565454] [2024-09-21 12:28:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:24,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:24,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:24,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:24,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:24,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:24,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:24,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:24,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:24,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 12:28:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-21 12:28:24,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:24,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621565454] [2024-09-21 12:28:24,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621565454] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:24,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714418816] [2024-09-21 12:28:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:24,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:24,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:24,221 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) [2024-09-21 12:28:24,222 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 12:28:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:24,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-21 12:28:24,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-21 12:28:24,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 12:28:24,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714418816] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:24,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:24,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2024-09-21 12:28:24,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000437027] [2024-09-21 12:28:24,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:24,908 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-21 12:28:24,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:24,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-21 12:28:24,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-21 12:28:24,909 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) [2024-09-21 12:28:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:25,218 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-09-21 12:28:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-21 12:28:25,219 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 [2024-09-21 12:28:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:25,222 INFO L225 Difference]: With dead ends: 252 [2024-09-21 12:28:25,222 INFO L226 Difference]: Without dead ends: 155 [2024-09-21 12:28:25,224 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2024-09-21 12:28:25,225 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 [2024-09-21 12:28:25,225 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] [2024-09-21 12:28:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-21 12:28:25,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-09-21 12:28:25,260 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) [2024-09-21 12:28:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-09-21 12:28:25,264 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-09-21 12:28:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:25,265 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-09-21 12:28:25,265 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) [2024-09-21 12:28:25,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:25,266 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-09-21 12:28:25,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-21 12:28:25,269 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:25,269 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] [2024-09-21 12:28:25,290 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-21 12:28:25,476 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 [2024-09-21 12:28:25,477 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:25,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash -805611050, now seen corresponding path program 1 times [2024-09-21 12:28:25,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416351611] [2024-09-21 12:28:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:25,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 12:28:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-21 12:28:25,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:25,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416351611] [2024-09-21 12:28:25,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416351611] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:25,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064929653] [2024-09-21 12:28:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:25,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:25,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:25,838 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) [2024-09-21 12:28:25,840 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 12:28:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:25,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-21 12:28:25,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-21 12:28:26,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 129 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-09-21 12:28:26,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064929653] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:26,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:26,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-09-21 12:28:26,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096839971] [2024-09-21 12:28:26,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:26,858 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-21 12:28:26,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:26,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-21 12:28:26,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-09-21 12:28:26,859 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) [2024-09-21 12:28:27,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:27,310 INFO L93 Difference]: Finished difference Result 256 states and 494 transitions. [2024-09-21 12:28:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-21 12:28:27,311 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 [2024-09-21 12:28:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:27,313 INFO L225 Difference]: With dead ends: 256 [2024-09-21 12:28:27,314 INFO L226 Difference]: Without dead ends: 108 [2024-09-21 12:28:27,315 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 [2024-09-21 12:28:27,316 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 70 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:27,316 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 272 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 12:28:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-21 12:28:27,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2024-09-21 12:28:27,331 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) [2024-09-21 12:28:27,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2024-09-21 12:28:27,332 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 110 [2024-09-21 12:28:27,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:27,333 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2024-09-21 12:28:27,333 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) [2024-09-21 12:28:27,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:27,334 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2024-09-21 12:28:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-21 12:28:27,335 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:27,335 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] [2024-09-21 12:28:27,353 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-21 12:28:27,536 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 [2024-09-21 12:28:27,536 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:27,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:27,537 INFO L85 PathProgramCache]: Analyzing trace with hash -273902236, now seen corresponding path program 1 times [2024-09-21 12:28:27,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:27,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223662571] [2024-09-21 12:28:27,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:27,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 12:28:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 12:28:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:27,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-21 12:28:28,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223662571] [2024-09-21 12:28:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223662571] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919520964] [2024-09-21 12:28:28,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:28,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:28,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:28,006 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) [2024-09-21 12:28:28,008 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 12:28:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:28,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-21 12:28:28,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 89 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-09-21 12:28:28,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 94 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-09-21 12:28:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919520964] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:28,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:28,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 21 [2024-09-21 12:28:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446399700] [2024-09-21 12:28:28,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:28,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-21 12:28:28,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-21 12:28:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-21 12:28:28,678 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) [2024-09-21 12:28:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:29,015 INFO L93 Difference]: Finished difference Result 182 states and 269 transitions. [2024-09-21 12:28:29,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-21 12:28:29,016 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 [2024-09-21 12:28:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:29,019 INFO L225 Difference]: With dead ends: 182 [2024-09-21 12:28:29,020 INFO L226 Difference]: Without dead ends: 102 [2024-09-21 12:28:29,021 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 270 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-09-21 12:28:29,021 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:29,022 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 343 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 12:28:29,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-21 12:28:29,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-09-21 12:28:29,043 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) [2024-09-21 12:28:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 131 transitions. [2024-09-21 12:28:29,044 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 131 transitions. Word has length 123 [2024-09-21 12:28:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:29,045 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 131 transitions. [2024-09-21 12:28:29,045 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) [2024-09-21 12:28:29,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:29,047 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 131 transitions. [2024-09-21 12:28:29,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-21 12:28:29,050 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:29,050 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] [2024-09-21 12:28:29,066 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-21 12:28:29,251 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 [2024-09-21 12:28:29,251 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:29,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:29,252 INFO L85 PathProgramCache]: Analyzing trace with hash -210930479, now seen corresponding path program 1 times [2024-09-21 12:28:29,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:29,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116898456] [2024-09-21 12:28:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:29,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 12:28:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:29,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 12:28:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 146 proven. 332 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-09-21 12:28:30,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:30,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116898456] [2024-09-21 12:28:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116898456] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:30,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891692024] [2024-09-21 12:28:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:30,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:30,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:30,120 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) [2024-09-21 12:28:30,121 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-21 12:28:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:30,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-21 12:28:30,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:30,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 173 proven. 199 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2024-09-21 12:28:30,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 173 proven. 213 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2024-09-21 12:28:31,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891692024] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:31,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:31,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 15] total 31 [2024-09-21 12:28:31,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846363086] [2024-09-21 12:28:31,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:31,715 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-21 12:28:31,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-21 12:28:31,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2024-09-21 12:28:31,717 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) [2024-09-21 12:28:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:32,392 INFO L93 Difference]: Finished difference Result 244 states and 433 transitions. [2024-09-21 12:28:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-21 12:28:32,393 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 [2024-09-21 12:28:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:32,397 INFO L225 Difference]: With dead ends: 244 [2024-09-21 12:28:32,397 INFO L226 Difference]: Without dead ends: 126 [2024-09-21 12:28:32,399 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 [2024-09-21 12:28:32,400 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 70 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:32,400 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 512 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-21 12:28:32,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-21 12:28:32,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2024-09-21 12:28:32,424 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) [2024-09-21 12:28:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-09-21 12:28:32,425 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 204 [2024-09-21 12:28:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:32,426 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-09-21 12:28:32,426 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) [2024-09-21 12:28:32,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:32,427 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-09-21 12:28:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-09-21 12:28:32,431 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:32,431 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] [2024-09-21 12:28:32,450 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-21 12:28:32,635 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 [2024-09-21 12:28:32,636 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:32,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:32,637 INFO L85 PathProgramCache]: Analyzing trace with hash -134939570, now seen corresponding path program 2 times [2024-09-21 12:28:32,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:32,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451676717] [2024-09-21 12:28:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:32,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:32,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:32,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:32,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 12:28:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 12:28:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 12:28:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 12:28:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 130 proven. 259 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2024-09-21 12:28:33,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451676717] [2024-09-21 12:28:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451676717] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229372760] [2024-09-21 12:28:33,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:28:33,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:33,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:33,269 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) [2024-09-21 12:28:33,271 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-21 12:28:33,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:28:33,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:28:33,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-21 12:28:33,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 203 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2024-09-21 12:28:33,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 208 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2024-09-21 12:28:34,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229372760] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:34,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:34,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 22 [2024-09-21 12:28:34,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676952426] [2024-09-21 12:28:34,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:34,297 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-21 12:28:34,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:34,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-21 12:28:34,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-09-21 12:28:34,299 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) [2024-09-21 12:28:34,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:34,638 INFO L93 Difference]: Finished difference Result 222 states and 300 transitions. [2024-09-21 12:28:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-21 12:28:34,638 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 [2024-09-21 12:28:34,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:34,641 INFO L225 Difference]: With dead ends: 222 [2024-09-21 12:28:34,641 INFO L226 Difference]: Without dead ends: 129 [2024-09-21 12:28:34,642 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 [2024-09-21 12:28:34,642 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 [2024-09-21 12:28:34,642 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] [2024-09-21 12:28:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-21 12:28:34,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 106. [2024-09-21 12:28:34,656 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) [2024-09-21 12:28:34,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 136 transitions. [2024-09-21 12:28:34,657 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 136 transitions. Word has length 231 [2024-09-21 12:28:34,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:34,658 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 136 transitions. [2024-09-21 12:28:34,658 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) [2024-09-21 12:28:34,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:34,658 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2024-09-21 12:28:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-21 12:28:34,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:34,661 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] [2024-09-21 12:28:34,679 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-21 12:28:34,861 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 [2024-09-21 12:28:34,862 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:34,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2126407970, now seen corresponding path program 3 times [2024-09-21 12:28:34,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:34,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862298116] [2024-09-21 12:28:34,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:34,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 12:28:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 12:28:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 12:28:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 193 proven. 340 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-09-21 12:28:35,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862298116] [2024-09-21 12:28:35,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862298116] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639461899] [2024-09-21 12:28:35,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:28:35,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:35,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:35,726 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) [2024-09-21 12:28:35,728 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-21 12:28:35,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-21 12:28:35,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:28:35,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-21 12:28:35,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 294 proven. 58 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-09-21 12:28:35,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 294 proven. 66 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2024-09-21 12:28:36,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639461899] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:36,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:36,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10, 13] total 31 [2024-09-21 12:28:36,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682553584] [2024-09-21 12:28:36,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:36,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-21 12:28:36,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-21 12:28:36,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-09-21 12:28:36,971 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) [2024-09-21 12:28:37,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:37,558 INFO L93 Difference]: Finished difference Result 249 states and 363 transitions. [2024-09-21 12:28:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-21 12:28:37,559 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 [2024-09-21 12:28:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:37,563 INFO L225 Difference]: With dead ends: 249 [2024-09-21 12:28:37,563 INFO L226 Difference]: Without dead ends: 149 [2024-09-21 12:28:37,565 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 [2024-09-21 12:28:37,565 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 88 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:37,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 379 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 12:28:37,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-21 12:28:37,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2024-09-21 12:28:37,586 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) [2024-09-21 12:28:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 169 transitions. [2024-09-21 12:28:37,588 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 169 transitions. Word has length 218 [2024-09-21 12:28:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:37,588 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 169 transitions. [2024-09-21 12:28:37,589 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) [2024-09-21 12:28:37,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 169 transitions. [2024-09-21 12:28:37,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-09-21 12:28:37,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:37,590 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] [2024-09-21 12:28:37,612 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-21 12:28:37,794 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 [2024-09-21 12:28:37,795 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:37,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2101186279, now seen corresponding path program 4 times [2024-09-21 12:28:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:37,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261197546] [2024-09-21 12:28:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:37,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:37,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 12:28:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 12:28:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-09-21 12:28:38,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:38,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261197546] [2024-09-21 12:28:38,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261197546] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:38,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481968805] [2024-09-21 12:28:38,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 12:28:38,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:38,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:38,249 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) [2024-09-21 12:28:38,251 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-21 12:28:38,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 12:28:38,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:28:38,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-21 12:28:38,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 141 proven. 34 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-21 12:28:38,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 143 proven. 37 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-21 12:28:39,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481968805] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:39,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:39,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 11] total 24 [2024-09-21 12:28:39,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616346284] [2024-09-21 12:28:39,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:39,077 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-21 12:28:39,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:39,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-21 12:28:39,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-09-21 12:28:39,078 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) [2024-09-21 12:28:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:39,354 INFO L93 Difference]: Finished difference Result 264 states and 347 transitions. [2024-09-21 12:28:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-21 12:28:39,354 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 [2024-09-21 12:28:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:39,357 INFO L225 Difference]: With dead ends: 264 [2024-09-21 12:28:39,357 INFO L226 Difference]: Without dead ends: 144 [2024-09-21 12:28:39,358 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 [2024-09-21 12:28:39,360 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 [2024-09-21 12:28:39,360 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] [2024-09-21 12:28:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-21 12:28:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2024-09-21 12:28:39,378 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) [2024-09-21 12:28:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2024-09-21 12:28:39,379 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 150 [2024-09-21 12:28:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:39,380 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2024-09-21 12:28:39,380 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) [2024-09-21 12:28:39,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2024-09-21 12:28:39,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-21 12:28:39,384 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:39,384 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] [2024-09-21 12:28:39,402 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-21 12:28:39,585 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 [2024-09-21 12:28:39,585 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:39,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:39,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1073615655, now seen corresponding path program 5 times [2024-09-21 12:28:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:39,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596846381] [2024-09-21 12:28:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:39,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 12:28:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 12:28:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 12:28:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 155 proven. 209 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2024-09-21 12:28:40,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596846381] [2024-09-21 12:28:40,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596846381] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280568229] [2024-09-21 12:28:40,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 12:28:40,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:40,141 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) [2024-09-21 12:28:40,143 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-21 12:28:40,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-21 12:28:40,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:28:40,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-21 12:28:40,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 638 proven. 46 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2024-09-21 12:28:40,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 143 proven. 256 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2024-09-21 12:28:41,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280568229] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:41,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:41,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-09-21 12:28:41,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459412629] [2024-09-21 12:28:41,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:41,250 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-21 12:28:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-21 12:28:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-21 12:28:41,251 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) [2024-09-21 12:28:41,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:41,524 INFO L93 Difference]: Finished difference Result 255 states and 341 transitions. [2024-09-21 12:28:41,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-21 12:28:41,525 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 [2024-09-21 12:28:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:41,527 INFO L225 Difference]: With dead ends: 255 [2024-09-21 12:28:41,528 INFO L226 Difference]: Without dead ends: 135 [2024-09-21 12:28:41,529 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 [2024-09-21 12:28:41,530 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 33 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-09-21 12:28:41,530 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] [2024-09-21 12:28:41,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-09-21 12:28:41,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2024-09-21 12:28:41,554 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) [2024-09-21 12:28:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2024-09-21 12:28:41,556 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 204 [2024-09-21 12:28:41,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:41,557 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2024-09-21 12:28:41,557 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) [2024-09-21 12:28:41,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2024-09-21 12:28:41,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-09-21 12:28:41,560 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:41,560 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] [2024-09-21 12:28:41,577 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-21 12:28:41,760 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 [2024-09-21 12:28:41,761 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:41,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:41,761 INFO L85 PathProgramCache]: Analyzing trace with hash 982134510, now seen corresponding path program 6 times [2024-09-21 12:28:41,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:41,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369353992] [2024-09-21 12:28:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:41,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:42,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:42,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:42,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:42,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:42,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:42,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:42,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:42,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:42,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:42,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 12:28:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 12:28:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-21 12:28:43,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:43,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369353992] [2024-09-21 12:28:43,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369353992] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:43,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370879797] [2024-09-21 12:28:43,329 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 12:28:43,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:43,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:43,331 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) [2024-09-21 12:28:43,333 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-21 12:28:43,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-09-21 12:28:43,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:28:43,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-09-21 12:28:43,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-21 12:28:43,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:44,586 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-21 12:28:44,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370879797] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:44,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:44,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2024-09-21 12:28:44,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629540371] [2024-09-21 12:28:44,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:44,588 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-21 12:28:44,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-21 12:28:44,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-09-21 12:28:44,589 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) [2024-09-21 12:28:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:44,908 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2024-09-21 12:28:44,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-21 12:28:44,909 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 [2024-09-21 12:28:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:44,910 INFO L225 Difference]: With dead ends: 140 [2024-09-21 12:28:44,910 INFO L226 Difference]: Without dead ends: 136 [2024-09-21 12:28:44,912 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 [2024-09-21 12:28:44,913 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:44,913 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1445 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 12:28:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-21 12:28:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2024-09-21 12:28:44,934 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) [2024-09-21 12:28:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2024-09-21 12:28:44,935 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 177 [2024-09-21 12:28:44,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:44,936 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2024-09-21 12:28:44,936 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) [2024-09-21 12:28:44,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2024-09-21 12:28:44,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-21 12:28:44,938 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:44,938 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] [2024-09-21 12:28:44,956 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-21 12:28:45,139 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 [2024-09-21 12:28:45,139 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:45,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash -790133168, now seen corresponding path program 7 times [2024-09-21 12:28:45,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:45,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15236915] [2024-09-21 12:28:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:45,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 12:28:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 12:28:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 12:28:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 12:28:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 12:28:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:28:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 221 proven. 250 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2024-09-21 12:28:45,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:45,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15236915] [2024-09-21 12:28:45,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15236915] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:45,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189507986] [2024-09-21 12:28:45,896 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 12:28:45,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:45,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:45,898 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) [2024-09-21 12:28:45,899 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-21 12:28:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:46,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-21 12:28:46,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 349 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-09-21 12:28:46,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 370 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2024-09-21 12:28:48,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189507986] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:48,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:48,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 17] total 31 [2024-09-21 12:28:48,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939934640] [2024-09-21 12:28:48,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:48,015 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-21 12:28:48,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:48,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-21 12:28:48,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-09-21 12:28:48,016 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) [2024-09-21 12:28:48,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:48,371 INFO L93 Difference]: Finished difference Result 251 states and 311 transitions. [2024-09-21 12:28:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-21 12:28:48,372 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 [2024-09-21 12:28:48,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:48,374 INFO L225 Difference]: With dead ends: 251 [2024-09-21 12:28:48,374 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 12:28:48,375 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 479 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2024-09-21 12:28:48,376 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 44 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:48,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 422 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 12:28:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 12:28:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 12:28:48,377 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) [2024-09-21 12:28:48,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 12:28:48,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 218 [2024-09-21 12:28:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:48,377 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 12:28:48,378 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) [2024-09-21 12:28:48,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:48,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 12:28:48,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 12:28:48,380 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 12:28:48,399 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-21 12:28:48,584 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 [2024-09-21 12:28:48,588 INFO L408 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:28:48,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 12:28:55,073 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 12:28:55,098 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-21 12:28:55,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:28:55 BoogieIcfgContainer [2024-09-21 12:28:55,099 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 12:28:55,100 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 12:28:55,100 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 12:28:55,100 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 12:28:55,100 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:28:18" (3/4) ... [2024-09-21 12:28:55,102 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 12:28:55,151 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 12:28:55,151 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 12:28:55,152 INFO L158 Benchmark]: Toolchain (without parser) took 37143.53ms. Allocated memory was 182.5MB in the beginning and 828.4MB in the end (delta: 645.9MB). Free memory was 114.4MB in the beginning and 674.8MB in the end (delta: -560.5MB). Peak memory consumption was 87.4MB. Max. memory is 16.1GB. [2024-09-21 12:28:55,152 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 12:28:55,152 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.44ms. Allocated memory is still 182.5MB. Free memory was 114.2MB in the beginning and 102.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-21 12:28:55,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.97ms. Allocated memory is still 182.5MB. Free memory was 102.9MB in the beginning and 155.4MB in the end (delta: -52.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-21 12:28:55,153 INFO L158 Benchmark]: Boogie Preprocessor took 29.57ms. Allocated memory is still 182.5MB. Free memory was 155.4MB in the beginning and 153.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 12:28:55,153 INFO L158 Benchmark]: RCFGBuilder took 381.03ms. Allocated memory is still 182.5MB. Free memory was 153.3MB in the beginning and 140.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 12:28:55,153 INFO L158 Benchmark]: TraceAbstraction took 36393.45ms. Allocated memory was 182.5MB in the beginning and 828.4MB in the end (delta: 645.9MB). Free memory was 140.0MB in the beginning and 676.9MB in the end (delta: -536.9MB). Peak memory consumption was 492.5MB. Max. memory is 16.1GB. [2024-09-21 12:28:55,153 INFO L158 Benchmark]: Witness Printer took 51.32ms. Allocated memory is still 828.4MB. Free memory was 676.9MB in the beginning and 674.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 12:28:55,155 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.44ms. Allocated memory is still 182.5MB. Free memory was 114.2MB in the beginning and 102.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.97ms. Allocated memory is still 182.5MB. Free memory was 102.9MB in the beginning and 155.4MB in the end (delta: -52.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.57ms. Allocated memory is still 182.5MB. Free memory was 155.4MB in the beginning and 153.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 381.03ms. Allocated memory is still 182.5MB. Free memory was 153.3MB in the beginning and 140.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 36393.45ms. Allocated memory was 182.5MB in the beginning and 828.4MB in the end (delta: 645.9MB). Free memory was 140.0MB in the beginning and 676.9MB in the end (delta: -536.9MB). Peak memory consumption was 492.5MB. Max. memory is 16.1GB. * Witness Printer took 51.32ms. Allocated memory is still 828.4MB. Free memory was 676.9MB in the beginning and 674.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 41]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.8s, OverallIterations: 16, TraceHistogramMax: 17, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 698 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, 577 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6270 IncrementalHoareTripleChecker+Invalid, 6847 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 577 mSolverCounterUnsat, 527 mSDtfsCounter, 6270 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, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=14, InterpolantAutomatonStates: 315, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 176 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 19.5s 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 == n)) || ((\result == 1) && (n == 1))) || (5 < n)) || ((3 == \result) && (n == 4))) || (n < 1)) || ((5 == \result) && (5 == n))) || ((\result == 1) && (2 == n))) && (((\result == 0) || (n == 1)) || (1 < n))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: ((\result == 0) || (0 < n)) RESULT: Ultimate proved your program to be correct! [2024-09-21 12:28:55,185 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