./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.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 e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_8-1.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 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 --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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:12:55,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:12:55,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 15:12:55,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:12:55,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:12:55,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:12:55,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:12:55,954 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:12:55,955 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:12:55,955 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:12:55,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 15:12:55,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 15:12:55,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:12:55,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:12:55,959 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:12:55,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:12:55,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:12:55,960 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:12:55,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:12:55,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:12:55,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:12:55,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:12:55,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:12:55,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:12:55,965 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:12:55,965 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:12:55,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:12:55,966 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:12:55,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:12:55,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:12:55,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:12:55,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:12:55,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:12:55,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 15:12:55,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 15:12:55,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 15:12:55,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 15:12:55,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 15:12:55,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 15:12:55,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 15:12:55,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 15:12:55,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 15:12:55,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 15:12:56,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:12:56,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:12:56,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:12:56,284 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:12:56,285 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:12:56,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-10-15 15:12:57,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:12:57,899 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:12:57,899 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-10-15 15:12:57,907 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/fd7c482f3/ee219afe163047ef87cc5a87c62c6cfb/FLAG3f2e20b77 [2024-10-15 15:12:58,276 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/fd7c482f3/ee219afe163047ef87cc5a87c62c6cfb [2024-10-15 15:12:58,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:12:58,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 15:12:58,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:12:58,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:12:58,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:12:58,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0825ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58, skipping insertion in model container [2024-10-15 15:12:58,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,308 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:12:58,468 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_8-1.c[947,960] [2024-10-15 15:12:58,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:12:58,481 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 15:12:58,496 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_8-1.c[947,960] [2024-10-15 15:12:58,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:12:58,513 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:12:58,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58 WrapperNode [2024-10-15 15:12:58,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:12:58,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:12:58,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:12:58,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:12:58,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,534 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:12:58,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:12:58,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:12:58,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:12:58,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:12:58,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,554 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]. [2024-10-15 15:12:58,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:12:58,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:12:58,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:12:58,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:12:58,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (1/1) ... [2024-10-15 15:12:58,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:12:58,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:58,591 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) [2024-10-15 15:12:58,597 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 [2024-10-15 15:12:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:12:58,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:12:58,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:12:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 15:12:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-10-15 15:12:58,646 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-10-15 15:12:58,646 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-10-15 15:12:58,648 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-10-15 15:12:58,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:12:58,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:12:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:12:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:12:58,714 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:12:58,717 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:12:58,911 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-15 15:12:58,915 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:12:58,945 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:12:58,946 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-15 15:12:58,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:12:58 BoogieIcfgContainer [2024-10-15 15:12:58,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:12:58,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 15:12:58,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 15:12:58,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 15:12:58,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:12:58" (1/3) ... [2024-10-15 15:12:58,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c4a443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:12:58, skipping insertion in model container [2024-10-15 15:12:58,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:58" (2/3) ... [2024-10-15 15:12:58,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c4a443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:12:58, skipping insertion in model container [2024-10-15 15:12:58,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:12:58" (3/3) ... [2024-10-15 15:12:58,958 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2024-10-15 15:12:58,976 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 15:12:58,977 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 15:12:59,042 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 15:12:59,050 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7bce7f3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 15:12:59,051 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 15:12:59,055 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) [2024-10-15 15:12:59,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-15 15:12:59,063 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:59,064 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:12:59,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:59,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-10-15 15:12:59,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:59,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756229714] [2024-10-15 15:12:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:59,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:59,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:59,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:12:59,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:59,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756229714] [2024-10-15 15:12:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756229714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:12:59,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:12:59,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:12:59,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666631807] [2024-10-15 15:12:59,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:12:59,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:12:59,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:59,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:12:59,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:12:59,455 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) [2024-10-15 15:12:59,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:59,552 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-10-15 15:12:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:12:59,555 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 [2024-10-15 15:12:59,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:59,562 INFO L225 Difference]: With dead ends: 44 [2024-10-15 15:12:59,562 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 15:12:59,565 INFO L431 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 [2024-10-15 15:12:59,568 INFO L432 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 [2024-10-15 15:12:59,569 INFO L433 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] [2024-10-15 15:12:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 15:12:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-10-15 15:12:59,615 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) [2024-10-15 15:12:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-10-15 15:12:59,619 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-10-15 15:12:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:59,621 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-10-15 15:12:59,621 INFO L472 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) [2024-10-15 15:12:59,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:59,623 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-10-15 15:12:59,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-15 15:12:59,624 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:59,625 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:12:59,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 15:12:59,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:59,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-10-15 15:12:59,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:59,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883486780] [2024-10-15 15:12:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:59,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:59,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:59,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:59,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:12:59,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:59,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883486780] [2024-10-15 15:12:59,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883486780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:12:59,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:12:59,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:12:59,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144067918] [2024-10-15 15:12:59,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:12:59,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:12:59,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:59,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:12:59,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:12:59,759 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) [2024-10-15 15:12:59,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:59,837 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-10-15 15:12:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:12:59,838 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 [2024-10-15 15:12:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:59,840 INFO L225 Difference]: With dead ends: 36 [2024-10-15 15:12:59,840 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 15:12:59,840 INFO L431 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 [2024-10-15 15:12:59,842 INFO L432 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 [2024-10-15 15:12:59,842 INFO L433 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] [2024-10-15 15:12:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 15:12:59,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-10-15 15:12:59,850 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) [2024-10-15 15:12:59,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-10-15 15:12:59,851 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-10-15 15:12:59,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:59,852 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-10-15 15:12:59,852 INFO L472 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) [2024-10-15 15:12:59,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-10-15 15:12:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-15 15:12:59,854 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:59,854 INFO L215 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] [2024-10-15 15:12:59,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 15:12:59,855 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:59,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:59,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-10-15 15:12:59,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:59,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928652052] [2024-10-15 15:12:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:59,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:59,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:59,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:00,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:00,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 15:13:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:13:00,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928652052] [2024-10-15 15:13:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928652052] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959993657] [2024-10-15 15:13:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:00,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:00,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:00,065 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) [2024-10-15 15:13:00,067 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 15:13:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:00,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 15:13:00,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:13:00,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:13:00,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959993657] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:00,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:00,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-10-15 15:13:00,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462600825] [2024-10-15 15:13:00,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:00,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 15:13:00,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:00,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 15:13:00,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-15 15:13:00,507 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) [2024-10-15 15:13:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:00,672 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-10-15 15:13:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 15:13:00,673 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 [2024-10-15 15:13:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:00,674 INFO L225 Difference]: With dead ends: 58 [2024-10-15 15:13:00,675 INFO L226 Difference]: Without dead ends: 34 [2024-10-15 15:13:00,676 INFO L431 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 [2024-10-15 15:13:00,678 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:00,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:13:00,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-15 15:13:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-10-15 15:13:00,693 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) [2024-10-15 15:13:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-10-15 15:13:00,696 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-10-15 15:13:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:00,696 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-10-15 15:13:00,696 INFO L472 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) [2024-10-15 15:13:00,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-10-15 15:13:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-15 15:13:00,700 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:00,700 INFO L215 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] [2024-10-15 15:13:00,718 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 15:13:00,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:00,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:00,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:00,902 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-10-15 15:13:00,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:00,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68029352] [2024-10-15 15:13:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:00,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:00,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:00,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:01,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:01,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:13:01,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68029352] [2024-10-15 15:13:01,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68029352] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286993494] [2024-10-15 15:13:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:01,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:01,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:01,043 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) [2024-10-15 15:13:01,044 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 15:13:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:01,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 15:13:01,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:13:01,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:13:01,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286993494] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:01,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:01,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-10-15 15:13:01,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393912232] [2024-10-15 15:13:01,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:01,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 15:13:01,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:01,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 15:13:01,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-10-15 15:13:01,371 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) [2024-10-15 15:13:01,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:01,609 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-10-15 15:13:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 15:13:01,609 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 [2024-10-15 15:13:01,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:01,612 INFO L225 Difference]: With dead ends: 56 [2024-10-15 15:13:01,615 INFO L226 Difference]: Without dead ends: 52 [2024-10-15 15:13:01,615 INFO L431 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 [2024-10-15 15:13:01,616 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-10-15 15:13:01,617 INFO L433 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] [2024-10-15 15:13:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-10-15 15:13:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-10-15 15:13:01,629 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) [2024-10-15 15:13:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-10-15 15:13:01,630 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-10-15 15:13:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:01,631 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-10-15 15:13:01,631 INFO L472 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) [2024-10-15 15:13:01,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-10-15 15:13:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-15 15:13:01,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:01,633 INFO L215 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] [2024-10-15 15:13:01,650 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 15:13:01,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:01,834 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:01,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:01,834 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-10-15 15:13:01,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:01,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720625771] [2024-10-15 15:13:01,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:01,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:01,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:01,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:01,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:01,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:02,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 15:13:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:02,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 15:13:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:13:02,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:02,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720625771] [2024-10-15 15:13:02,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720625771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:02,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115693637] [2024-10-15 15:13:02,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:02,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:02,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:02,014 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) [2024-10-15 15:13:02,016 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 15:13:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:02,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 15:13:02,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 15:13:02,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:13:02,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115693637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:02,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:02,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-10-15 15:13:02,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078925039] [2024-10-15 15:13:02,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:02,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 15:13:02,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:02,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 15:13:02,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-10-15 15:13:02,481 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) [2024-10-15 15:13:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:02,747 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-10-15 15:13:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 15:13:02,747 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 [2024-10-15 15:13:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:02,749 INFO L225 Difference]: With dead ends: 112 [2024-10-15 15:13:02,749 INFO L226 Difference]: Without dead ends: 68 [2024-10-15 15:13:02,754 INFO L431 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 [2024-10-15 15:13:02,755 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:02,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 200 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:13:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-15 15:13:02,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-10-15 15:13:02,774 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) [2024-10-15 15:13:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-10-15 15:13:02,777 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-10-15 15:13:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:02,778 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-10-15 15:13:02,778 INFO L472 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) [2024-10-15 15:13:02,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-10-15 15:13:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-15 15:13:02,782 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:02,782 INFO L215 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] [2024-10-15 15:13:02,800 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 15:13:02,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:02,983 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:02,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:02,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-10-15 15:13:02,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:02,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979261375] [2024-10-15 15:13:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:02,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:03,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:03,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:03,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:03,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:03,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:03,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-15 15:13:03,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:03,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979261375] [2024-10-15 15:13:03,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979261375] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:03,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072612113] [2024-10-15 15:13:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:03,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:03,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:03,212 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) [2024-10-15 15:13:03,214 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 15:13:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:03,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 15:13:03,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:13:03,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:13:03,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072612113] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:03,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:03,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-10-15 15:13:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822431297] [2024-10-15 15:13:03,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:03,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-15 15:13:03,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:03,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-15 15:13:03,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-10-15 15:13:03,684 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) [2024-10-15 15:13:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:04,013 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-10-15 15:13:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 15:13:04,014 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 [2024-10-15 15:13:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:04,019 INFO L225 Difference]: With dead ends: 182 [2024-10-15 15:13:04,019 INFO L226 Difference]: Without dead ends: 122 [2024-10-15 15:13:04,020 INFO L431 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 [2024-10-15 15:13:04,025 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:04,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 343 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:13:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-15 15:13:04,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-10-15 15:13:04,058 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) [2024-10-15 15:13:04,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-10-15 15:13:04,060 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-10-15 15:13:04,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:04,062 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-10-15 15:13:04,062 INFO L472 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) [2024-10-15 15:13:04,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:04,072 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-10-15 15:13:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-15 15:13:04,076 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:04,077 INFO L215 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] [2024-10-15 15:13:04,090 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 15:13:04,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:04,278 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:04,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-10-15 15:13:04,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:04,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705737236] [2024-10-15 15:13:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:04,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:04,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:04,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:04,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:04,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:04,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:04,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:04,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:04,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 15:13:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-15 15:13:04,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705737236] [2024-10-15 15:13:04,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705737236] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991110480] [2024-10-15 15:13:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:04,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:04,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:04,498 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) [2024-10-15 15:13:04,499 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 15:13:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:04,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 15:13:04,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:04,647 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-15 15:13:04,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 15:13:05,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991110480] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:05,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:05,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2024-10-15 15:13:05,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794708703] [2024-10-15 15:13:05,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:05,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 15:13:05,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 15:13:05,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-10-15 15:13:05,169 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) [2024-10-15 15:13:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:05,511 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-10-15 15:13:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 15:13:05,512 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 [2024-10-15 15:13:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:05,514 INFO L225 Difference]: With dead ends: 252 [2024-10-15 15:13:05,515 INFO L226 Difference]: Without dead ends: 155 [2024-10-15 15:13:05,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2024-10-15 15:13:05,518 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:05,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 256 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:13:05,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-10-15 15:13:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-10-15 15:13:05,545 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) [2024-10-15 15:13:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-10-15 15:13:05,547 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-10-15 15:13:05,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:05,553 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-10-15 15:13:05,554 INFO L472 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) [2024-10-15 15:13:05,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-10-15 15:13:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-15 15:13:05,565 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:05,566 INFO L215 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] [2024-10-15 15:13:05,585 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 15:13:05,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 15:13:05,767 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:05,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash -805611050, now seen corresponding path program 1 times [2024-10-15 15:13:05,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:05,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017337118] [2024-10-15 15:13:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:05,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:05,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:05,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:05,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:05,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:05,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 15:13:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-15 15:13:06,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:06,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017337118] [2024-10-15 15:13:06,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017337118] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:06,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143155260] [2024-10-15 15:13:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:06,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:06,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:06,096 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) [2024-10-15 15:13:06,097 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 15:13:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 15:13:06,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-10-15 15:13:06,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 129 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-10-15 15:13:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143155260] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:07,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:07,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 24 [2024-10-15 15:13:07,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583431727] [2024-10-15 15:13:07,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:07,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-15 15:13:07,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:07,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-15 15:13:07,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2024-10-15 15:13:07,160 INFO L87 Difference]: Start difference. First operand 112 states and 180 transitions. Second operand has 24 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 24 states have internal predecessors, (76), 18 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (28), 11 states have call predecessors, (28), 18 states have call successors, (28) [2024-10-15 15:13:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:07,635 INFO L93 Difference]: Finished difference Result 256 states and 494 transitions. [2024-10-15 15:13:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 15:13:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 24 states have internal predecessors, (76), 18 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (28), 11 states have call predecessors, (28), 18 states have call successors, (28) Word has length 110 [2024-10-15 15:13:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:07,638 INFO L225 Difference]: With dead ends: 256 [2024-10-15 15:13:07,638 INFO L226 Difference]: Without dead ends: 108 [2024-10-15 15:13:07,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=1039, Unknown=0, NotChecked=0, Total=1260 [2024-10-15 15:13:07,640 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 59 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:07,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 365 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:13:07,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-15 15:13:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2024-10-15 15:13:07,656 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) [2024-10-15 15:13:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2024-10-15 15:13:07,659 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 110 [2024-10-15 15:13:07,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:07,659 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2024-10-15 15:13:07,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 24 states have internal predecessors, (76), 18 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (28), 11 states have call predecessors, (28), 18 states have call successors, (28) [2024-10-15 15:13:07,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2024-10-15 15:13:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-15 15:13:07,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:07,665 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 9, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:07,683 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 15:13:07,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:07,866 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:07,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:07,866 INFO L85 PathProgramCache]: Analyzing trace with hash 222670340, now seen corresponding path program 1 times [2024-10-15 15:13:07,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:07,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777633238] [2024-10-15 15:13:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:07,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:07,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:07,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 15:13:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 15:13:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 71 proven. 160 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-10-15 15:13:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777633238] [2024-10-15 15:13:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777633238] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748561350] [2024-10-15 15:13:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:08,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:08,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:08,351 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) [2024-10-15 15:13:08,355 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 15:13:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 15:13:08,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 34 proven. 242 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2024-10-15 15:13:08,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 34 proven. 258 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2024-10-15 15:13:09,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748561350] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:09,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:09,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 26 [2024-10-15 15:13:09,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758754557] [2024-10-15 15:13:09,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:09,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-15 15:13:09,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-15 15:13:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-10-15 15:13:09,773 INFO L87 Difference]: Start difference. First operand 91 states and 127 transitions. Second operand has 26 states, 24 states have (on average 3.5) internal successors, (84), 26 states have internal predecessors, (84), 20 states have call successors, (28), 1 states have call predecessors, (28), 10 states have return successors, (33), 12 states have call predecessors, (33), 20 states have call successors, (33) [2024-10-15 15:13:10,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:10,265 INFO L93 Difference]: Finished difference Result 229 states and 395 transitions. [2024-10-15 15:13:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-15 15:13:10,265 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.5) internal successors, (84), 26 states have internal predecessors, (84), 20 states have call successors, (28), 1 states have call predecessors, (28), 10 states have return successors, (33), 12 states have call predecessors, (33), 20 states have call successors, (33) Word has length 164 [2024-10-15 15:13:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:10,268 INFO L225 Difference]: With dead ends: 229 [2024-10-15 15:13:10,268 INFO L226 Difference]: Without dead ends: 131 [2024-10-15 15:13:10,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 357 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=275, Invalid=1285, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 15:13:10,270 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 85 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:10,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 437 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:13:10,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-15 15:13:10,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2024-10-15 15:13:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 74 states have internal predecessors, (89), 22 states have call successors, (22), 13 states have call predecessors, (22), 15 states have return successors, (52), 23 states have call predecessors, (52), 21 states have call successors, (52) [2024-10-15 15:13:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 163 transitions. [2024-10-15 15:13:10,292 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 163 transitions. Word has length 164 [2024-10-15 15:13:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:10,293 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 163 transitions. [2024-10-15 15:13:10,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.5) internal successors, (84), 26 states have internal predecessors, (84), 20 states have call successors, (28), 1 states have call predecessors, (28), 10 states have return successors, (33), 12 states have call predecessors, (33), 20 states have call successors, (33) [2024-10-15 15:13:10,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 163 transitions. [2024-10-15 15:13:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-10-15 15:13:10,296 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:10,297 INFO L215 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] [2024-10-15 15:13:10,313 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-15 15:13:10,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:10,501 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:10,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash 501832710, now seen corresponding path program 2 times [2024-10-15 15:13:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:10,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145835594] [2024-10-15 15:13:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 15:13:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 15:13:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 167 proven. 260 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2024-10-15 15:13:11,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:11,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145835594] [2024-10-15 15:13:11,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145835594] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:11,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832999211] [2024-10-15 15:13:11,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:13:11,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:11,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:11,235 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) [2024-10-15 15:13:11,237 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 15:13:11,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:13:11,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:11,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-15 15:13:11,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 77 proven. 418 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2024-10-15 15:13:11,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 77 proven. 442 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2024-10-15 15:13:13,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832999211] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:13,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:13,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 17] total 27 [2024-10-15 15:13:13,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255430193] [2024-10-15 15:13:13,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:13,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-15 15:13:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-15 15:13:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2024-10-15 15:13:13,176 INFO L87 Difference]: Start difference. First operand 111 states and 163 transitions. Second operand has 27 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 27 states have internal predecessors, (90), 21 states have call successors, (29), 1 states have call predecessors, (29), 11 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) [2024-10-15 15:13:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:13,713 INFO L93 Difference]: Finished difference Result 254 states and 432 transitions. [2024-10-15 15:13:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-15 15:13:13,714 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 27 states have internal predecessors, (90), 21 states have call successors, (29), 1 states have call predecessors, (29), 11 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) Word has length 231 [2024-10-15 15:13:13,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:13,718 INFO L225 Difference]: With dead ends: 254 [2024-10-15 15:13:13,718 INFO L226 Difference]: Without dead ends: 156 [2024-10-15 15:13:13,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 510 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=339, Invalid=1553, Unknown=0, NotChecked=0, Total=1892 [2024-10-15 15:13:13,720 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 64 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:13,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 336 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:13:13,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-10-15 15:13:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2024-10-15 15:13:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 97 states have (on average 1.2474226804123711) internal successors, (121), 96 states have internal predecessors, (121), 28 states have call successors, (28), 19 states have call predecessors, (28), 17 states have return successors, (72), 27 states have call predecessors, (72), 27 states have call successors, (72) [2024-10-15 15:13:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 221 transitions. [2024-10-15 15:13:13,763 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 221 transitions. Word has length 231 [2024-10-15 15:13:13,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:13,764 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 221 transitions. [2024-10-15 15:13:13,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 27 states have internal predecessors, (90), 21 states have call successors, (29), 1 states have call predecessors, (29), 11 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) [2024-10-15 15:13:13,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 221 transitions. [2024-10-15 15:13:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2024-10-15 15:13:13,775 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:13,776 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 37, 37, 31, 30, 20, 20, 20, 20, 20, 20, 20, 18, 18, 18, 18, 18, 18, 18, 12, 11, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:13,793 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-15 15:13:13,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:13,980 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:13,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1090979059, now seen corresponding path program 3 times [2024-10-15 15:13:13,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:13,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990209344] [2024-10-15 15:13:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:13,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:14,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:14,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:14,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:14,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:14,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:14,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 15:13:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 15:13:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-10-15 15:13:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 15:13:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 15:13:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8056 backedges. 302 proven. 934 refuted. 0 times theorem prover too weak. 6820 trivial. 0 not checked. [2024-10-15 15:13:15,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:15,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990209344] [2024-10-15 15:13:15,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990209344] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:15,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26085676] [2024-10-15 15:13:15,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 15:13:15,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:15,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:15,348 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) [2024-10-15 15:13:15,350 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 15:13:15,495 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-15 15:13:15,496 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:15,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 15:13:15,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8056 backedges. 2122 proven. 34 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2024-10-15 15:13:15,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8056 backedges. 1190 proven. 112 refuted. 0 times theorem prover too weak. 6754 trivial. 0 not checked. [2024-10-15 15:13:17,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26085676] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:17,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:17,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 23 [2024-10-15 15:13:17,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558920291] [2024-10-15 15:13:17,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:17,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-15 15:13:17,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-15 15:13:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-10-15 15:13:17,532 INFO L87 Difference]: Start difference. First operand 143 states and 221 transitions. Second operand has 23 states, 22 states have (on average 4.045454545454546) internal successors, (89), 23 states have internal predecessors, (89), 15 states have call successors, (30), 2 states have call predecessors, (30), 7 states have return successors, (34), 11 states have call predecessors, (34), 15 states have call successors, (34) [2024-10-15 15:13:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:17,850 INFO L93 Difference]: Finished difference Result 283 states and 456 transitions. [2024-10-15 15:13:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 15:13:17,851 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.045454545454546) internal successors, (89), 23 states have internal predecessors, (89), 15 states have call successors, (30), 2 states have call predecessors, (30), 7 states have return successors, (34), 11 states have call predecessors, (34), 15 states have call successors, (34) Word has length 530 [2024-10-15 15:13:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:17,854 INFO L225 Difference]: With dead ends: 283 [2024-10-15 15:13:17,854 INFO L226 Difference]: Without dead ends: 153 [2024-10-15 15:13:17,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1203 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2024-10-15 15:13:17,857 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:17,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 275 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:13:17,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-10-15 15:13:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2024-10-15 15:13:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 98 states have internal predecessors, (117), 28 states have call successors, (28), 21 states have call predecessors, (28), 17 states have return successors, (69), 27 states have call predecessors, (69), 27 states have call successors, (69) [2024-10-15 15:13:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2024-10-15 15:13:17,882 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 530 [2024-10-15 15:13:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:17,883 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2024-10-15 15:13:17,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.045454545454546) internal successors, (89), 23 states have internal predecessors, (89), 15 states have call successors, (30), 2 states have call predecessors, (30), 7 states have return successors, (34), 11 states have call predecessors, (34), 15 states have call successors, (34) [2024-10-15 15:13:17,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2024-10-15 15:13:17,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-10-15 15:13:17,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:17,891 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 30, 30, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 11, 9, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:17,908 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-15 15:13:18,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 15:13:18,094 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:18,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:18,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1226774066, now seen corresponding path program 4 times [2024-10-15 15:13:18,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247144199] [2024-10-15 15:13:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:18,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:18,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:18,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:18,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:18,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:18,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:18,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 15:13:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 15:13:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 15:13:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 15:13:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 548 proven. 844 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2024-10-15 15:13:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247144199] [2024-10-15 15:13:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247144199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:19,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441378939] [2024-10-15 15:13:19,471 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 15:13:19,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:19,473 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) [2024-10-15 15:13:19,475 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 15:13:19,681 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 15:13:19,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:19,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 15:13:19,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 431 proven. 787 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2024-10-15 15:13:19,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5377 backedges. 433 proven. 815 refuted. 0 times theorem prover too weak. 4129 trivial. 0 not checked. [2024-10-15 15:13:22,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441378939] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:22,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:22,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 19] total 38 [2024-10-15 15:13:22,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494460387] [2024-10-15 15:13:22,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:22,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-15 15:13:22,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:22,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-15 15:13:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2024-10-15 15:13:22,802 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 38 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 38 states have internal predecessors, (109), 28 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (47), 24 states have call predecessors, (47), 28 states have call successors, (47) [2024-10-15 15:13:23,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:23,562 INFO L93 Difference]: Finished difference Result 335 states and 607 transitions. [2024-10-15 15:13:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-15 15:13:23,563 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 38 states have internal predecessors, (109), 28 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (47), 24 states have call predecessors, (47), 28 states have call successors, (47) Word has length 436 [2024-10-15 15:13:23,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:23,566 INFO L225 Difference]: With dead ends: 335 [2024-10-15 15:13:23,566 INFO L226 Difference]: Without dead ends: 173 [2024-10-15 15:13:23,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 975 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=432, Invalid=2648, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 15:13:23,570 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 101 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:23,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 680 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 15:13:23,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-10-15 15:13:23,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 153. [2024-10-15 15:13:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 105 states have (on average 1.0761904761904761) internal successors, (113), 102 states have internal predecessors, (113), 30 states have call successors, (30), 23 states have call predecessors, (30), 17 states have return successors, (48), 27 states have call predecessors, (48), 29 states have call successors, (48) [2024-10-15 15:13:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 191 transitions. [2024-10-15 15:13:23,619 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 191 transitions. Word has length 436 [2024-10-15 15:13:23,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:23,619 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 191 transitions. [2024-10-15 15:13:23,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 38 states have internal predecessors, (109), 28 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (47), 24 states have call predecessors, (47), 28 states have call successors, (47) [2024-10-15 15:13:23,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 191 transitions. [2024-10-15 15:13:23,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-10-15 15:13:23,627 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:23,628 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:23,677 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-15 15:13:23,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-15 15:13:23,829 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:23,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:23,829 INFO L85 PathProgramCache]: Analyzing trace with hash 143598254, now seen corresponding path program 5 times [2024-10-15 15:13:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:23,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507305668] [2024-10-15 15:13:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:23,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 15:13:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 15:13:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:24,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 15:13:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 15:13:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 1060 proven. 718 refuted. 0 times theorem prover too weak. 3591 trivial. 0 not checked. [2024-10-15 15:13:25,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:25,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507305668] [2024-10-15 15:13:25,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507305668] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:25,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515111197] [2024-10-15 15:13:25,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 15:13:25,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:25,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:25,427 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) [2024-10-15 15:13:25,428 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 15:13:25,683 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-10-15 15:13:25,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:25,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 15:13:25,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 918 proven. 135 refuted. 0 times theorem prover too weak. 4316 trivial. 0 not checked. [2024-10-15 15:13:25,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 920 proven. 137 refuted. 0 times theorem prover too weak. 4312 trivial. 0 not checked. [2024-10-15 15:13:27,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515111197] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:27,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:27,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 13, 15] total 41 [2024-10-15 15:13:27,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999453954] [2024-10-15 15:13:27,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:27,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-15 15:13:27,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:27,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-15 15:13:27,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1407, Unknown=0, NotChecked=0, Total=1640 [2024-10-15 15:13:27,427 INFO L87 Difference]: Start difference. First operand 153 states and 191 transitions. Second operand has 41 states, 40 states have (on average 2.775) internal successors, (111), 41 states have internal predecessors, (111), 23 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (46), 29 states have call predecessors, (46), 23 states have call successors, (46) [2024-10-15 15:13:28,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:28,058 INFO L93 Difference]: Finished difference Result 327 states and 426 transitions. [2024-10-15 15:13:28,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-15 15:13:28,059 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.775) internal successors, (111), 41 states have internal predecessors, (111), 23 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (46), 29 states have call predecessors, (46), 23 states have call successors, (46) Word has length 436 [2024-10-15 15:13:28,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:28,064 INFO L225 Difference]: With dead ends: 327 [2024-10-15 15:13:28,064 INFO L226 Difference]: Without dead ends: 184 [2024-10-15 15:13:28,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 981 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=416, Invalid=2446, Unknown=0, NotChecked=0, Total=2862 [2024-10-15 15:13:28,067 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 97 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:28,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 816 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 15:13:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-15 15:13:28,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 155. [2024-10-15 15:13:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 107 states have (on average 1.0373831775700935) internal successors, (111), 105 states have internal predecessors, (111), 31 states have call successors, (31), 24 states have call predecessors, (31), 16 states have return successors, (45), 25 states have call predecessors, (45), 30 states have call successors, (45) [2024-10-15 15:13:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 187 transitions. [2024-10-15 15:13:28,089 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 187 transitions. Word has length 436 [2024-10-15 15:13:28,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:28,090 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 187 transitions. [2024-10-15 15:13:28,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.775) internal successors, (111), 41 states have internal predecessors, (111), 23 states have call successors, (37), 1 states have call predecessors, (37), 16 states have return successors, (46), 29 states have call predecessors, (46), 23 states have call successors, (46) [2024-10-15 15:13:28,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:28,091 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 187 transitions. [2024-10-15 15:13:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-10-15 15:13:28,093 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:28,093 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:28,112 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-15 15:13:28,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:28,298 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:28,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:28,298 INFO L85 PathProgramCache]: Analyzing trace with hash -47366488, now seen corresponding path program 6 times [2024-10-15 15:13:28,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:28,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162080268] [2024-10-15 15:13:28,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:28,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:28,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:28,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:28,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:28,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 15:13:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 15:13:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 15:13:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 726 proven. 662 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2024-10-15 15:13:29,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:29,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162080268] [2024-10-15 15:13:29,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162080268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:29,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254694885] [2024-10-15 15:13:29,558 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 15:13:29,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:29,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:29,560 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) [2024-10-15 15:13:29,561 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 15:13:29,753 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-10-15 15:13:29,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:29,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 15:13:29,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 603 proven. 95 refuted. 0 times theorem prover too weak. 3672 trivial. 0 not checked. [2024-10-15 15:13:29,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 607 proven. 101 refuted. 0 times theorem prover too weak. 3662 trivial. 0 not checked. [2024-10-15 15:13:31,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254694885] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:31,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:31,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 10, 13] total 36 [2024-10-15 15:13:31,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860782499] [2024-10-15 15:13:31,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:31,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-15 15:13:31,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-15 15:13:31,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2024-10-15 15:13:31,075 INFO L87 Difference]: Start difference. First operand 155 states and 187 transitions. Second operand has 36 states, 35 states have (on average 2.742857142857143) internal successors, (96), 36 states have internal predecessors, (96), 21 states have call successors, (32), 1 states have call predecessors, (32), 16 states have return successors, (41), 28 states have call predecessors, (41), 21 states have call successors, (41) [2024-10-15 15:13:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:31,768 INFO L93 Difference]: Finished difference Result 233 states and 284 transitions. [2024-10-15 15:13:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-15 15:13:31,768 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.742857142857143) internal successors, (96), 36 states have internal predecessors, (96), 21 states have call successors, (32), 1 states have call predecessors, (32), 16 states have return successors, (41), 28 states have call predecessors, (41), 21 states have call successors, (41) Word has length 395 [2024-10-15 15:13:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:31,772 INFO L225 Difference]: With dead ends: 233 [2024-10-15 15:13:31,772 INFO L226 Difference]: Without dead ends: 209 [2024-10-15 15:13:31,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 889 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=442, Invalid=2638, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 15:13:31,774 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 121 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:31,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 552 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 15:13:31,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-10-15 15:13:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 172. [2024-10-15 15:13:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 117 states have internal predecessors, (123), 35 states have call successors, (35), 27 states have call predecessors, (35), 17 states have return successors, (46), 27 states have call predecessors, (46), 34 states have call successors, (46) [2024-10-15 15:13:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 204 transitions. [2024-10-15 15:13:31,800 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 204 transitions. Word has length 395 [2024-10-15 15:13:31,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:31,801 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 204 transitions. [2024-10-15 15:13:31,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.742857142857143) internal successors, (96), 36 states have internal predecessors, (96), 21 states have call successors, (32), 1 states have call predecessors, (32), 16 states have return successors, (41), 28 states have call predecessors, (41), 21 states have call successors, (41) [2024-10-15 15:13:31,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 204 transitions. [2024-10-15 15:13:31,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2024-10-15 15:13:31,804 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:31,804 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:31,821 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-15 15:13:32,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-15 15:13:32,005 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:32,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash -853718073, now seen corresponding path program 7 times [2024-10-15 15:13:32,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:32,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028052857] [2024-10-15 15:13:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:34,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:34,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:35,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:36,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:36,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:36,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 15:13:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 15:13:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:37,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 15:13:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 15:13:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-10-15 15:13:38,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:38,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028052857] [2024-10-15 15:13:38,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028052857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:38,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311958691] [2024-10-15 15:13:38,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 15:13:38,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:38,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:38,641 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) [2024-10-15 15:13:38,643 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-15 15:13:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:38,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 271 conjuncts are in the unsatisfiable core [2024-10-15 15:13:38,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-10-15 15:13:39,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-10-15 15:13:41,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311958691] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:41,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:41,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 52 [2024-10-15 15:13:41,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038663292] [2024-10-15 15:13:41,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:41,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-15 15:13:41,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:41,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-15 15:13:41,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-10-15 15:13:41,574 INFO L87 Difference]: Start difference. First operand 172 states and 204 transitions. Second operand has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (36), 36 states have call predecessors, (36), 11 states have call successors, (36) [2024-10-15 15:13:42,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:42,130 INFO L93 Difference]: Finished difference Result 227 states and 289 transitions. [2024-10-15 15:13:42,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-15 15:13:42,131 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (36), 36 states have call predecessors, (36), 11 states have call successors, (36) Word has length 463 [2024-10-15 15:13:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:42,134 INFO L225 Difference]: With dead ends: 227 [2024-10-15 15:13:42,134 INFO L226 Difference]: Without dead ends: 220 [2024-10-15 15:13:42,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 1148 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-10-15 15:13:42,135 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:42,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2879 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 15:13:42,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-10-15 15:13:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 215. [2024-10-15 15:13:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 145 states have (on average 1.0275862068965518) internal successors, (149), 143 states have internal predecessors, (149), 43 states have call successors, (43), 27 states have call predecessors, (43), 26 states have return successors, (85), 44 states have call predecessors, (85), 42 states have call successors, (85) [2024-10-15 15:13:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 277 transitions. [2024-10-15 15:13:42,168 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 277 transitions. Word has length 463 [2024-10-15 15:13:42,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:42,169 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 277 transitions. [2024-10-15 15:13:42,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (36), 36 states have call predecessors, (36), 11 states have call successors, (36) [2024-10-15 15:13:42,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 277 transitions. [2024-10-15 15:13:42,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-10-15 15:13:42,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:42,172 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 31, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 14, 11, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:42,189 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-15 15:13:42,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-15 15:13:42,372 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:42,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:42,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1405558607, now seen corresponding path program 8 times [2024-10-15 15:13:42,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:42,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075199818] [2024-10-15 15:13:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:42,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:42,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:42,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:42,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:42,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:42,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:42,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:42,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:42,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 15:13:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 15:13:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 15:13:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 15:13:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 15:13:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 15:13:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-10-15 15:13:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 15:13:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 15:13:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 15:13:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 15:13:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6196 backedges. 294 proven. 1156 refuted. 0 times theorem prover too weak. 4746 trivial. 0 not checked. [2024-10-15 15:13:43,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:43,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075199818] [2024-10-15 15:13:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075199818] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:43,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021132709] [2024-10-15 15:13:43,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:13:43,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:43,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:43,199 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) [2024-10-15 15:13:43,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-15 15:13:43,429 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:13:43,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:43,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-15 15:13:43,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6196 backedges. 288 proven. 880 refuted. 0 times theorem prover too weak. 5028 trivial. 0 not checked. [2024-10-15 15:13:43,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6196 backedges. 292 proven. 899 refuted. 0 times theorem prover too weak. 5005 trivial. 0 not checked. [2024-10-15 15:13:45,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021132709] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:45,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:45,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 17] total 32 [2024-10-15 15:13:45,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19264599] [2024-10-15 15:13:45,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:45,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-15 15:13:45,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:45,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-15 15:13:45,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2024-10-15 15:13:45,702 INFO L87 Difference]: Start difference. First operand 215 states and 277 transitions. Second operand has 32 states, 31 states have (on average 3.161290322580645) internal successors, (98), 32 states have internal predecessors, (98), 22 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (40), 19 states have call predecessors, (40), 22 states have call successors, (40) [2024-10-15 15:13:46,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:46,425 INFO L93 Difference]: Finished difference Result 449 states and 611 transitions. [2024-10-15 15:13:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-15 15:13:46,426 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.161290322580645) internal successors, (98), 32 states have internal predecessors, (98), 22 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (40), 19 states have call predecessors, (40), 22 states have call successors, (40) Word has length 467 [2024-10-15 15:13:46,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:46,428 INFO L225 Difference]: With dead ends: 449 [2024-10-15 15:13:46,428 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 15:13:46,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1052 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=362, Invalid=2088, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 15:13:46,433 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 84 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:46,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 613 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 15:13:46,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 15:13:46,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 15:13:46,434 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) [2024-10-15 15:13:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 15:13:46,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 467 [2024-10-15 15:13:46,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:46,438 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 15:13:46,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.161290322580645) internal successors, (98), 32 states have internal predecessors, (98), 22 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (40), 19 states have call predecessors, (40), 22 states have call successors, (40) [2024-10-15 15:13:46,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:46,439 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 15:13:46,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 15:13:46,442 INFO L782 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 15:13:46,461 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-15 15:13:46,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-15 15:13:46,646 INFO L407 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:46,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 15:13:59,036 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 15:13:59,059 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-15 15:13:59,074 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-15 15:13:59,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:13:59 BoogieIcfgContainer [2024-10-15 15:13:59,076 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 15:13:59,076 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 15:13:59,076 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 15:13:59,077 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 15:13:59,077 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:12:58" (3/4) ... [2024-10-15 15:13:59,079 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 15:13:59,152 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 15:13:59,152 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 15:13:59,153 INFO L158 Benchmark]: Toolchain (without parser) took 60873.51ms. Allocated memory was 169.9MB in the beginning and 1.1GB in the end (delta: 966.8MB). Free memory was 137.6MB in the beginning and 1.0GB in the end (delta: -867.0MB). Peak memory consumption was 100.9MB. Max. memory is 16.1GB. [2024-10-15 15:13:59,154 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 117.4MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:13:59,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.41ms. Allocated memory is still 169.9MB. Free memory was 136.8MB in the beginning and 125.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 15:13:59,154 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.10ms. Allocated memory is still 169.9MB. Free memory was 125.3MB in the beginning and 124.4MB in the end (delta: 855.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:13:59,155 INFO L158 Benchmark]: Boogie Preprocessor took 24.77ms. Allocated memory is still 169.9MB. Free memory was 124.4MB in the beginning and 122.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:13:59,155 INFO L158 Benchmark]: RCFGBuilder took 386.74ms. Allocated memory is still 169.9MB. Free memory was 122.4MB in the beginning and 109.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 15:13:59,155 INFO L158 Benchmark]: TraceAbstraction took 60126.61ms. Allocated memory was 169.9MB in the beginning and 1.1GB in the end (delta: 966.8MB). Free memory was 109.3MB in the beginning and 1.0GB in the end (delta: -897.3MB). Peak memory consumption was 667.5MB. Max. memory is 16.1GB. [2024-10-15 15:13:59,156 INFO L158 Benchmark]: Witness Printer took 76.10ms. Allocated memory is still 1.1GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:13:59,160 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 117.4MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.41ms. Allocated memory is still 169.9MB. Free memory was 136.8MB in the beginning and 125.3MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.10ms. Allocated memory is still 169.9MB. Free memory was 125.3MB in the beginning and 124.4MB in the end (delta: 855.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.77ms. Allocated memory is still 169.9MB. Free memory was 124.4MB in the beginning and 122.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 386.74ms. Allocated memory is still 169.9MB. Free memory was 122.4MB in the beginning and 109.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 60126.61ms. Allocated memory was 169.9MB in the beginning and 1.1GB in the end (delta: 966.8MB). Free memory was 109.3MB in the beginning and 1.0GB in the end (delta: -897.3MB). Peak memory consumption was 667.5MB. Max. memory is 16.1GB. * Witness Printer took 76.10ms. Allocated memory is still 1.1GB. Free memory was 1.0GB in the beginning and 1.0GB 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 - 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: 47.6s, OverallIterations: 16, TraceHistogramMax: 40, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.1s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 921 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 836 mSDsluCounter, 8285 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7677 mSDsCounter, 793 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8422 IncrementalHoareTripleChecker+Invalid, 9215 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 793 mSolverCounterUnsat, 608 mSDtfsCounter, 8422 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8322 GetRequests, 7756 SyntacticMatches, 69 SemanticMatches, 497 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5655 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215occurred in iteration=15, InterpolantAutomatonStates: 379, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 219 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 34.9s InterpolantComputationTime, 6863 NumberOfCodeBlocks, 6202 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 10237 ConstructedInterpolants, 0 QuantifiedInterpolants, 15721 SizeOfPredicates, 52 NumberOfNonLiveVariables, 6304 ConjunctsInSsa, 423 ConjunctsInUnsatCore, 44 InterpolantComputations, 2 PerfectInterpolantSequences, 97006/113640 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: ((((n < 6) || (\result == 13)) || (7 < n)) && (((\result == 0) || (n == 1)) || (1 < n))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: ((((\result == 0) || ((n == 1) && (\result == 1))) || (2 < n)) && ((21 == \result) || (n != 8))) RESULT: Ultimate proved your program to be correct! [2024-10-15 15:13:59,193 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE