./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 ca4ee3dd Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_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 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 19:50:02,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:50:02,444 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:50:02,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:50:02,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:50:02,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:50:02,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:50:02,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:50:02,481 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:50:02,484 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:50:02,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:50:02,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:50:02,485 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:50:02,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:50:02,485 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:50:02,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:50:02,485 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:50:02,486 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:50:02,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:50:02,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:50:02,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:50:02,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:50:02,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:50:02,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:50:02,488 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:50:02,488 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:50:02,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:50:02,489 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:50:02,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:50:02,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:50:02,489 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:50:02,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:50:02,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:50:02,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:50:02,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:50:02,490 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:50:02,490 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:50:02,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:50:02,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:50:02,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:50:02,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:50:02,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:50:02,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:50:02,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:50:02,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:50:02,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:50:02,753 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:50:02,753 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:50:02,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-09-20 19:50:04,003 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:50:04,155 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:50:04,157 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-09-20 19:50:04,165 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e41958629/f495149a6d7d493e9b7a82c298a11c55/FLAG24ac29f6f [2024-09-20 19:50:04,566 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e41958629/f495149a6d7d493e9b7a82c298a11c55 [2024-09-20 19:50:04,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:50:04,571 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:50:04,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:50:04,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:50:04,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:50:04,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39478c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04, skipping insertion in model container [2024-09-20 19:50:04,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:50:04,697 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] [2024-09-20 19:50:04,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:50:04,712 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:50:04,729 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] [2024-09-20 19:50:04,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:50:04,745 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:50:04,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04 WrapperNode [2024-09-20 19:50:04,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:50:04,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:50:04,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:50:04,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:50:04,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,763 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:50:04,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:50:04,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:50:04,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:50:04,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:50:04,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,790 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 19:50:04,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,794 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:50:04,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:50:04,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:50:04,801 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:50:04,801 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (1/1) ... [2024-09-20 19:50:04,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:50:04,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:04,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 19:50:04,836 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 19:50:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:50:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:50:04,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:50:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:50:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-20 19:50:04,871 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-20 19:50:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-20 19:50:04,872 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-20 19:50:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:50:04,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:50:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:50:04,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:50:04,923 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:50:04,925 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:50:05,043 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-20 19:50:05,044 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:50:05,082 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:50:05,082 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-20 19:50:05,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:50:05 BoogieIcfgContainer [2024-09-20 19:50:05,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:50:05,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:50:05,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:50:05,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:50:05,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:50:04" (1/3) ... [2024-09-20 19:50:05,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d77b236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:50:05, skipping insertion in model container [2024-09-20 19:50:05,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:50:04" (2/3) ... [2024-09-20 19:50:05,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d77b236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:50:05, skipping insertion in model container [2024-09-20 19:50:05,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:50:05" (3/3) ... [2024-09-20 19:50:05,089 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2024-09-20 19:50:05,102 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:50:05,102 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:50:05,150 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:50:05,156 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f16ec8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:50:05,157 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:50:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 19:50:05,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-20 19:50:05,168 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:05,168 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:05,169 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:05,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:05,173 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-09-20 19:50:05,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:05,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504723774] [2024-09-20 19:50:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:05,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:50:05,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504723774] [2024-09-20 19:50:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504723774] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:50:05,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:50:05,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:50:05,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723185740] [2024-09-20 19:50:05,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:50:05,427 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:50:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:50:05,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:50:05,446 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 19:50:05,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:05,515 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-20 19:50:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:50:05,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-20 19:50:05,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:05,523 INFO L225 Difference]: With dead ends: 44 [2024-09-20 19:50:05,523 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 19:50:05,525 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:50:05,529 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:05,530 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:50:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 19:50:05,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-20 19:50:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-20 19:50:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-20 19:50:05,562 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-09-20 19:50:05,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:05,563 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-20 19:50:05,563 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 19:50:05,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-20 19:50:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-20 19:50:05,565 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:05,565 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:05,565 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:50:05,565 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:05,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:05,566 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-09-20 19:50:05,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:05,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194105608] [2024-09-20 19:50:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:05,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:50:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194105608] [2024-09-20 19:50:05,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194105608] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:50:05,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:50:05,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:50:05,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592729149] [2024-09-20 19:50:05,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:50:05,666 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:50:05,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:05,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:50:05,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:50:05,667 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 19:50:05,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:05,721 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-20 19:50:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:50:05,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-20 19:50:05,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:05,722 INFO L225 Difference]: With dead ends: 36 [2024-09-20 19:50:05,722 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 19:50:05,725 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:50:05,726 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:05,726 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:50:05,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 19:50:05,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-20 19:50:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-20 19:50:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-20 19:50:05,736 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-09-20 19:50:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:05,736 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-20 19:50:05,736 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 19:50:05,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-20 19:50:05,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-20 19:50:05,737 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:05,737 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:05,737 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 19:50:05,738 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:05,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:05,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-09-20 19:50:05,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598546943] [2024-09-20 19:50:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-20 19:50:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:50:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:05,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598546943] [2024-09-20 19:50:05,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598546943] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:05,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343917436] [2024-09-20 19:50:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:05,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:05,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:05,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:05,885 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 19:50:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:05,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 19:50:05,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:50:06,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:50:06,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343917436] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:06,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:06,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-20 19:50:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808443331] [2024-09-20 19:50:06,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:06,267 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 19:50:06,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 19:50:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:50:06,268 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-20 19:50:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:06,385 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-09-20 19:50:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 19:50:06,385 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) Word has length 26 [2024-09-20 19:50:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:06,387 INFO L225 Difference]: With dead ends: 58 [2024-09-20 19:50:06,387 INFO L226 Difference]: Without dead ends: 34 [2024-09-20 19:50:06,387 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-20 19:50:06,388 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:06,388 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:50:06,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-20 19:50:06,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-20 19:50:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-20 19:50:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-09-20 19:50:06,396 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-09-20 19:50:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:06,396 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-09-20 19:50:06,396 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-20 19:50:06,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-09-20 19:50:06,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-20 19:50:06,398 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:06,398 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:06,410 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-20 19:50:06,599 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:06,600 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:06,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-09-20 19:50:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:06,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669891873] [2024-09-20 19:50:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:06,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:06,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:06,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:06,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:06,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:50:06,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:06,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669891873] [2024-09-20 19:50:06,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669891873] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:06,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608159400] [2024-09-20 19:50:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:06,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:06,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:06,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:06,726 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 19:50:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:06,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 19:50:06,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:50:06,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:50:06,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608159400] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:06,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:06,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-20 19:50:06,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711398262] [2024-09-20 19:50:06,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:06,941 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 19:50:06,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:06,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 19:50:06,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:50:06,942 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 19:50:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:07,120 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-09-20 19:50:07,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 19:50:07,121 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 27 [2024-09-20 19:50:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:07,123 INFO L225 Difference]: With dead ends: 56 [2024-09-20 19:50:07,123 INFO L226 Difference]: Without dead ends: 52 [2024-09-20 19:50:07,123 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-09-20 19:50:07,124 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:07,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 182 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 19:50:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-20 19:50:07,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-20 19:50:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 states have internal predecessors, (39), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-20 19:50:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-09-20 19:50:07,135 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-09-20 19:50:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:07,137 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-09-20 19:50:07,137 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 19:50:07,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-09-20 19:50:07,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-20 19:50:07,138 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:07,138 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:07,150 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 19:50:07,339 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:07,339 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:07,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:07,340 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-09-20 19:50:07,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:07,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262016671] [2024-09-20 19:50:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:07,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:07,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:07,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:07,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:07,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:07,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-20 19:50:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:07,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 19:50:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 19:50:07,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:07,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262016671] [2024-09-20 19:50:07,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262016671] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:07,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059545855] [2024-09-20 19:50:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:07,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:07,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:07,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:07,473 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 19:50:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:07,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 19:50:07,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-20 19:50:07,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:50:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059545855] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:07,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:07,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-09-20 19:50:07,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79719966] [2024-09-20 19:50:07,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:07,821 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-20 19:50:07,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:07,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-20 19:50:07,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-20 19:50:07,822 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-20 19:50:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:08,034 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-09-20 19:50:08,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-20 19:50:08,035 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) Word has length 39 [2024-09-20 19:50:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:08,037 INFO L225 Difference]: With dead ends: 112 [2024-09-20 19:50:08,040 INFO L226 Difference]: Without dead ends: 68 [2024-09-20 19:50:08,041 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-09-20 19:50:08,042 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:08,042 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 200 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:50:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-20 19:50:08,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-09-20 19:50:08,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 44 states have internal predecessors, (51), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) [2024-09-20 19:50:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-09-20 19:50:08,061 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-09-20 19:50:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:08,062 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-09-20 19:50:08,062 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-20 19:50:08,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-09-20 19:50:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-20 19:50:08,065 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:08,065 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:08,079 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 19:50:08,269 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:08,270 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:08,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-09-20 19:50:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:08,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944655239] [2024-09-20 19:50:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:08,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:08,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:08,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:08,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:08,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:08,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:08,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-20 19:50:08,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944655239] [2024-09-20 19:50:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944655239] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907651890] [2024-09-20 19:50:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:08,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:08,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:08,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:08,402 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 19:50:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:08,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 19:50:08,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 19:50:08,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:08,752 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:50:08,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907651890] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:08,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:08,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-09-20 19:50:08,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421884223] [2024-09-20 19:50:08,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:08,754 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-20 19:50:08,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:08,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-20 19:50:08,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-20 19:50:08,755 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-20 19:50:09,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:09,050 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-09-20 19:50:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 19:50:09,051 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) Word has length 40 [2024-09-20 19:50:09,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:09,053 INFO L225 Difference]: With dead ends: 182 [2024-09-20 19:50:09,053 INFO L226 Difference]: Without dead ends: 122 [2024-09-20 19:50:09,054 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-09-20 19:50:09,054 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:09,055 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 343 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 19:50:09,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-20 19:50:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-09-20 19:50:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.21875) internal successors, (78), 67 states have internal predecessors, (78), 23 states have call successors, (23), 9 states have call predecessors, (23), 15 states have return successors, (64), 26 states have call predecessors, (64), 22 states have call successors, (64) [2024-09-20 19:50:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-09-20 19:50:09,083 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-09-20 19:50:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:09,083 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-09-20 19:50:09,085 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-20 19:50:09,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:09,085 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-09-20 19:50:09,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-20 19:50:09,089 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:09,090 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:09,102 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 19:50:09,290 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:09,290 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:09,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:09,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-09-20 19:50:09,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:09,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100721740] [2024-09-20 19:50:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:09,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:09,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:09,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:09,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:09,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:09,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:09,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:09,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:09,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 19:50:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-20 19:50:09,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:09,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100721740] [2024-09-20 19:50:09,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100721740] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:09,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240477599] [2024-09-20 19:50:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:09,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:09,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:09,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:09,459 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 19:50:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:09,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 19:50:09,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-20 19:50:09,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:50:09,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240477599] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:09,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:09,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2024-09-20 19:50:09,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103066473] [2024-09-20 19:50:09,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:09,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 19:50:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:09,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 19:50:09,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-20 19:50:09,982 INFO L87 Difference]: Start difference. First operand 103 states and 165 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-20 19:50:10,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:10,264 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-09-20 19:50:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 19:50:10,265 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) Word has length 54 [2024-09-20 19:50:10,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:10,267 INFO L225 Difference]: With dead ends: 252 [2024-09-20 19:50:10,267 INFO L226 Difference]: Without dead ends: 155 [2024-09-20 19:50:10,270 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2024-09-20 19:50:10,271 INFO L434 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 [2024-09-20 19:50:10,272 INFO L435 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] [2024-09-20 19:50:10,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-20 19:50:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-09-20 19:50:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 26 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (67), 28 states have call predecessors, (67), 25 states have call successors, (67) [2024-09-20 19:50:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-09-20 19:50:10,300 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-09-20 19:50:10,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:10,301 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-09-20 19:50:10,301 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-20 19:50:10,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-09-20 19:50:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-20 19:50:10,305 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:10,305 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:10,318 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 19:50:10,505 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-20 19:50:10,506 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:10,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:10,506 INFO L85 PathProgramCache]: Analyzing trace with hash -805611050, now seen corresponding path program 1 times [2024-09-20 19:50:10,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:10,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38347408] [2024-09-20 19:50:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:10,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 19:50:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-20 19:50:10,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38347408] [2024-09-20 19:50:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38347408] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:10,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177219345] [2024-09-20 19:50:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:10,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:10,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:10,812 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:10,814 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 19:50:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:10,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 19:50:10,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-20 19:50:10,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 129 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-09-20 19:50:11,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177219345] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:11,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:11,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 24 [2024-09-20 19:50:11,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575298948] [2024-09-20 19:50:11,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:11,665 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 19:50:11,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:11,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 19:50:11,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2024-09-20 19:50:11,666 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) [2024-09-20 19:50:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:12,068 INFO L93 Difference]: Finished difference Result 256 states and 494 transitions. [2024-09-20 19:50:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-20 19:50:12,069 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 [2024-09-20 19:50:12,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:12,071 INFO L225 Difference]: With dead ends: 256 [2024-09-20 19:50:12,071 INFO L226 Difference]: Without dead ends: 108 [2024-09-20 19:50:12,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=1039, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 19:50:12,072 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 59 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-09-20 19:50:12,073 INFO L435 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] [2024-09-20 19:50:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-20 19:50:12,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2024-09-20 19:50:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 60 states have internal predecessors, (70), 18 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (39), 20 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-20 19:50:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2024-09-20 19:50:12,084 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 110 [2024-09-20 19:50:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:12,085 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2024-09-20 19:50:12,085 INFO L475 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) [2024-09-20 19:50:12,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2024-09-20 19:50:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-20 19:50:12,086 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:12,086 INFO L216 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] [2024-09-20 19:50:12,100 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 19:50:12,288 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:12,289 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:12,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:12,289 INFO L85 PathProgramCache]: Analyzing trace with hash 222670340, now seen corresponding path program 1 times [2024-09-20 19:50:12,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:12,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004785927] [2024-09-20 19:50:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:12,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 19:50:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 19:50:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 71 proven. 160 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2024-09-20 19:50:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004785927] [2024-09-20 19:50:12,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004785927] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175121867] [2024-09-20 19:50:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:12,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:12,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:12,645 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:12,646 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 19:50:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:12,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 19:50:12,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 34 proven. 242 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2024-09-20 19:50:12,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 34 proven. 258 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2024-09-20 19:50:13,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175121867] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:13,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:13,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 26 [2024-09-20 19:50:13,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169922562] [2024-09-20 19:50:13,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:13,719 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 19:50:13,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:13,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 19:50:13,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-09-20 19:50:13,720 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) [2024-09-20 19:50:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:14,131 INFO L93 Difference]: Finished difference Result 229 states and 395 transitions. [2024-09-20 19:50:14,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-20 19:50:14,132 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 [2024-09-20 19:50:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:14,133 INFO L225 Difference]: With dead ends: 229 [2024-09-20 19:50:14,134 INFO L226 Difference]: Without dead ends: 131 [2024-09-20 19:50:14,135 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 357 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=1285, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 19:50:14,135 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 85 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:14,136 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 437 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:50:14,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-20 19:50:14,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2024-09-20 19:50:14,151 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) [2024-09-20 19:50:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 163 transitions. [2024-09-20 19:50:14,152 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 163 transitions. Word has length 164 [2024-09-20 19:50:14,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:14,152 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 163 transitions. [2024-09-20 19:50:14,153 INFO L475 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) [2024-09-20 19:50:14,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 163 transitions. [2024-09-20 19:50:14,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-09-20 19:50:14,157 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:14,157 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:14,170 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-20 19:50:14,357 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:14,358 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:14,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:14,358 INFO L85 PathProgramCache]: Analyzing trace with hash 501832710, now seen corresponding path program 2 times [2024-09-20 19:50:14,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:14,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128550444] [2024-09-20 19:50:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:14,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 19:50:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 19:50:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 167 proven. 260 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2024-09-20 19:50:14,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:14,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128550444] [2024-09-20 19:50:14,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128550444] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:14,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261756096] [2024-09-20 19:50:14,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:50:14,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:14,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:14,910 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:14,910 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 19:50:14,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:50:15,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:50:15,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-20 19:50:15,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 77 proven. 418 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2024-09-20 19:50:15,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 77 proven. 442 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2024-09-20 19:50:16,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261756096] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:16,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:16,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 17] total 27 [2024-09-20 19:50:16,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895964206] [2024-09-20 19:50:16,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:16,462 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-20 19:50:16,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:16,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-20 19:50:16,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2024-09-20 19:50:16,463 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) [2024-09-20 19:50:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:16,904 INFO L93 Difference]: Finished difference Result 254 states and 432 transitions. [2024-09-20 19:50:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-20 19:50:16,904 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 [2024-09-20 19:50:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:16,906 INFO L225 Difference]: With dead ends: 254 [2024-09-20 19:50:16,906 INFO L226 Difference]: Without dead ends: 156 [2024-09-20 19:50:16,909 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 510 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=339, Invalid=1553, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 19:50:16,909 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 64 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:16,910 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 336 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:50:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-09-20 19:50:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2024-09-20 19:50:16,925 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) [2024-09-20 19:50:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 221 transitions. [2024-09-20 19:50:16,927 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 221 transitions. Word has length 231 [2024-09-20 19:50:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:16,927 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 221 transitions. [2024-09-20 19:50:16,927 INFO L475 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) [2024-09-20 19:50:16,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 221 transitions. [2024-09-20 19:50:16,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2024-09-20 19:50:16,932 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:16,932 INFO L216 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] [2024-09-20 19:50:16,946 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-20 19:50:17,136 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:17,136 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:17,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1090979059, now seen corresponding path program 3 times [2024-09-20 19:50:17,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:17,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028262784] [2024-09-20 19:50:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:17,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 19:50:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 19:50:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 19:50:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 19:50:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 19:50:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8056 backedges. 302 proven. 934 refuted. 0 times theorem prover too weak. 6820 trivial. 0 not checked. [2024-09-20 19:50:18,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:18,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028262784] [2024-09-20 19:50:18,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028262784] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:18,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991080721] [2024-09-20 19:50:18,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:50:18,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:18,321 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:18,322 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 19:50:18,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-20 19:50:18,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:50:18,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 19:50:18,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8056 backedges. 2122 proven. 34 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2024-09-20 19:50:18,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8056 backedges. 1190 proven. 112 refuted. 0 times theorem prover too weak. 6754 trivial. 0 not checked. [2024-09-20 19:50:19,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991080721] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:19,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:19,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 23 [2024-09-20 19:50:19,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408861758] [2024-09-20 19:50:19,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:19,997 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-20 19:50:19,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-20 19:50:19,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-09-20 19:50:19,997 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) [2024-09-20 19:50:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:20,227 INFO L93 Difference]: Finished difference Result 283 states and 456 transitions. [2024-09-20 19:50:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 19:50:20,227 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 [2024-09-20 19:50:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:20,229 INFO L225 Difference]: With dead ends: 283 [2024-09-20 19:50:20,229 INFO L226 Difference]: Without dead ends: 153 [2024-09-20 19:50:20,230 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1203 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2024-09-20 19:50:20,231 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:20,231 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 275 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:50:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-09-20 19:50:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2024-09-20 19:50:20,245 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) [2024-09-20 19:50:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2024-09-20 19:50:20,247 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 530 [2024-09-20 19:50:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:20,247 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2024-09-20 19:50:20,247 INFO L475 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) [2024-09-20 19:50:20,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2024-09-20 19:50:20,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-09-20 19:50:20,253 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:20,253 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 26, 26, 24, 22, 15, 15, 15, 15, 15, 15, 15, 13, 13, 13, 13, 13, 13, 13, 11, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:20,266 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-20 19:50:20,453 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 19:50:20,453 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:20,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1175745416, now seen corresponding path program 4 times [2024-09-20 19:50:20,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:20,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317570820] [2024-09-20 19:50:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:20,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:20,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:20,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:20,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 19:50:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 19:50:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 19:50:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 542 proven. 693 refuted. 0 times theorem prover too weak. 3164 trivial. 0 not checked. [2024-09-20 19:50:21,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:21,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317570820] [2024-09-20 19:50:21,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317570820] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:21,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76514675] [2024-09-20 19:50:21,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 19:50:21,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:21,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:21,570 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:21,571 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 19:50:21,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 19:50:21,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:50:21,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 19:50:21,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 425 proven. 657 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2024-09-20 19:50:21,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 427 proven. 685 refuted. 0 times theorem prover too weak. 3287 trivial. 0 not checked. [2024-09-20 19:50:24,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76514675] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:24,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:24,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 19] total 37 [2024-09-20 19:50:24,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114020478] [2024-09-20 19:50:24,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:24,042 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-20 19:50:24,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:24,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-20 19:50:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 19:50:24,044 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 37 states, 36 states have (on average 3.0) internal successors, (108), 37 states have internal predecessors, (108), 27 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 24 states have call predecessors, (47), 27 states have call successors, (47) [2024-09-20 19:50:24,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:24,791 INFO L93 Difference]: Finished difference Result 338 states and 610 transitions. [2024-09-20 19:50:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-20 19:50:24,791 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.0) internal successors, (108), 37 states have internal predecessors, (108), 27 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 24 states have call predecessors, (47), 27 states have call successors, (47) Word has length 395 [2024-09-20 19:50:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:24,795 INFO L225 Difference]: With dead ends: 338 [2024-09-20 19:50:24,796 INFO L226 Difference]: Without dead ends: 176 [2024-09-20 19:50:24,798 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 882 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=426, Invalid=2436, Unknown=0, NotChecked=0, Total=2862 [2024-09-20 19:50:24,798 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 64 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:24,799 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 865 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 19:50:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-20 19:50:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 156. [2024-09-20 19:50:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 108 states have (on average 1.0740740740740742) internal successors, (116), 104 states have internal predecessors, (116), 30 states have call successors, (30), 24 states have call predecessors, (30), 17 states have return successors, (48), 27 states have call predecessors, (48), 29 states have call successors, (48) [2024-09-20 19:50:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 194 transitions. [2024-09-20 19:50:24,816 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 194 transitions. Word has length 395 [2024-09-20 19:50:24,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:24,816 INFO L474 AbstractCegarLoop]: Abstraction has 156 states and 194 transitions. [2024-09-20 19:50:24,816 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.0) internal successors, (108), 37 states have internal predecessors, (108), 27 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 24 states have call predecessors, (47), 27 states have call successors, (47) [2024-09-20 19:50:24,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 194 transitions. [2024-09-20 19:50:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-09-20 19:50:24,821 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:24,821 INFO L216 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] [2024-09-20 19:50:24,835 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-20 19:50:25,025 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-20 19:50:25,026 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:25,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash 143598254, now seen corresponding path program 5 times [2024-09-20 19:50:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:25,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679219597] [2024-09-20 19:50:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:25,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 19:50:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 19:50:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 19:50:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:25,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 19:50:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 1060 proven. 718 refuted. 0 times theorem prover too weak. 3591 trivial. 0 not checked. [2024-09-20 19:50:26,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:26,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679219597] [2024-09-20 19:50:26,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679219597] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:26,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428249667] [2024-09-20 19:50:26,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 19:50:26,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:26,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:26,173 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:26,175 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 19:50:26,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-09-20 19:50:26,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:50:26,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 19:50:26,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:26,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 918 proven. 135 refuted. 0 times theorem prover too weak. 4316 trivial. 0 not checked. [2024-09-20 19:50:26,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 920 proven. 137 refuted. 0 times theorem prover too weak. 4312 trivial. 0 not checked. [2024-09-20 19:50:27,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428249667] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:27,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:27,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 13, 15] total 41 [2024-09-20 19:50:27,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683284019] [2024-09-20 19:50:27,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:27,748 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-20 19:50:27,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:27,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-20 19:50:27,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1407, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 19:50:27,750 INFO L87 Difference]: Start difference. First operand 156 states and 194 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) [2024-09-20 19:50:28,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:28,204 INFO L93 Difference]: Finished difference Result 337 states and 445 transitions. [2024-09-20 19:50:28,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-20 19:50:28,205 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 [2024-09-20 19:50:28,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:28,207 INFO L225 Difference]: With dead ends: 337 [2024-09-20 19:50:28,207 INFO L226 Difference]: Without dead ends: 194 [2024-09-20 19:50:28,209 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 981 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=2446, Unknown=0, NotChecked=0, Total=2862 [2024-09-20 19:50:28,210 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 94 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:28,210 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 783 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:50:28,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-09-20 19:50:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 163. [2024-09-20 19:50:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 113 states have (on average 1.0353982300884956) internal successors, (117), 111 states have internal predecessors, (117), 33 states have call successors, (33), 26 states have call predecessors, (33), 16 states have return successors, (45), 25 states have call predecessors, (45), 32 states have call successors, (45) [2024-09-20 19:50:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 195 transitions. [2024-09-20 19:50:28,225 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 195 transitions. Word has length 436 [2024-09-20 19:50:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:28,225 INFO L474 AbstractCegarLoop]: Abstraction has 163 states and 195 transitions. [2024-09-20 19:50:28,226 INFO L475 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) [2024-09-20 19:50:28,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 195 transitions. [2024-09-20 19:50:28,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-09-20 19:50:28,227 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:28,228 INFO L216 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] [2024-09-20 19:50:28,240 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-20 19:50:28,431 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:28,431 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:28,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:28,432 INFO L85 PathProgramCache]: Analyzing trace with hash -47366488, now seen corresponding path program 6 times [2024-09-20 19:50:28,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:28,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757418927] [2024-09-20 19:50:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:28,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:28,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:28,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:28,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:28,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 19:50:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 19:50:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 19:50:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 726 proven. 662 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2024-09-20 19:50:29,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:29,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757418927] [2024-09-20 19:50:29,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757418927] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:29,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278835986] [2024-09-20 19:50:29,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 19:50:29,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:29,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:29,397 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:29,399 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 19:50:29,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-20 19:50:29,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:50:29,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 19:50:29,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 603 proven. 95 refuted. 0 times theorem prover too weak. 3672 trivial. 0 not checked. [2024-09-20 19:50:29,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 607 proven. 101 refuted. 0 times theorem prover too weak. 3662 trivial. 0 not checked. [2024-09-20 19:50:30,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278835986] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:30,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:30,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 10, 13] total 36 [2024-09-20 19:50:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273514081] [2024-09-20 19:50:30,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:30,544 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 19:50:30,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 19:50:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 19:50:30,545 INFO L87 Difference]: Start difference. First operand 163 states and 195 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) [2024-09-20 19:50:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:31,112 INFO L93 Difference]: Finished difference Result 244 states and 295 transitions. [2024-09-20 19:50:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-20 19:50:31,113 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 [2024-09-20 19:50:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:31,115 INFO L225 Difference]: With dead ends: 244 [2024-09-20 19:50:31,115 INFO L226 Difference]: Without dead ends: 220 [2024-09-20 19:50:31,116 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 889 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=442, Invalid=2638, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 19:50:31,117 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 125 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:31,117 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 604 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 19:50:31,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-09-20 19:50:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 180. [2024-09-20 19:50:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 125 states have (on average 1.032) internal successors, (129), 123 states have internal predecessors, (129), 37 states have call successors, (37), 29 states have call predecessors, (37), 17 states have return successors, (46), 27 states have call predecessors, (46), 36 states have call successors, (46) [2024-09-20 19:50:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 212 transitions. [2024-09-20 19:50:31,132 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 212 transitions. Word has length 395 [2024-09-20 19:50:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:31,133 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 212 transitions. [2024-09-20 19:50:31,133 INFO L475 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) [2024-09-20 19:50:31,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 212 transitions. [2024-09-20 19:50:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2024-09-20 19:50:31,135 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:31,135 INFO L216 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] [2024-09-20 19:50:31,147 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-20 19:50:31,335 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 19:50:31,336 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:31,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:31,336 INFO L85 PathProgramCache]: Analyzing trace with hash -853718073, now seen corresponding path program 7 times [2024-09-20 19:50:31,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:31,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513599509] [2024-09-20 19:50:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:31,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:33,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:33,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:34,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 19:50:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 19:50:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 19:50:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 19:50:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-09-20 19:50:36,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513599509] [2024-09-20 19:50:36,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513599509] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074164029] [2024-09-20 19:50:36,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 19:50:36,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:36,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:36,515 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:36,516 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-20 19:50:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 271 conjuncts are in the unsatisfiable core [2024-09-20 19:50:36,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-09-20 19:50:37,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-09-20 19:50:38,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074164029] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:38,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:38,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 52 [2024-09-20 19:50:38,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425391908] [2024-09-20 19:50:38,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:38,806 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-20 19:50:38,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:38,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-20 19:50:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 19:50:38,808 INFO L87 Difference]: Start difference. First operand 180 states and 212 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) [2024-09-20 19:50:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:39,319 INFO L93 Difference]: Finished difference Result 235 states and 297 transitions. [2024-09-20 19:50:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-20 19:50:39,320 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 [2024-09-20 19:50:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:39,322 INFO L225 Difference]: With dead ends: 235 [2024-09-20 19:50:39,322 INFO L226 Difference]: Without dead ends: 228 [2024-09-20 19:50:39,323 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 1148 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 19:50:39,327 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:39,327 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2964 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 19:50:39,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-09-20 19:50:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 223. [2024-09-20 19:50:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 149 states have internal predecessors, (155), 45 states have call successors, (45), 29 states have call predecessors, (45), 26 states have return successors, (85), 44 states have call predecessors, (85), 44 states have call successors, (85) [2024-09-20 19:50:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 285 transitions. [2024-09-20 19:50:39,349 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 285 transitions. Word has length 463 [2024-09-20 19:50:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:39,349 INFO L474 AbstractCegarLoop]: Abstraction has 223 states and 285 transitions. [2024-09-20 19:50:39,349 INFO L475 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) [2024-09-20 19:50:39,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 285 transitions. [2024-09-20 19:50:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-09-20 19:50:39,352 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:39,352 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 30, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 13, 11, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:39,365 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-20 19:50:39,552 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 19:50:39,553 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:39,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash -14358772, now seen corresponding path program 8 times [2024-09-20 19:50:39,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:39,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985300368] [2024-09-20 19:50:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:39,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:39,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:39,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:39,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 19:50:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 19:50:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 19:50:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 19:50:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 19:50:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 19:50:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 19:50:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 19:50:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 19:50:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 19:50:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6166 backedges. 497 proven. 1243 refuted. 0 times theorem prover too weak. 4426 trivial. 0 not checked. [2024-09-20 19:50:40,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:40,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985300368] [2024-09-20 19:50:40,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985300368] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:40,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203006949] [2024-09-20 19:50:40,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:50:40,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:40,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:40,418 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:40,419 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-20 19:50:40,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:50:40,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:50:40,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-20 19:50:40,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6166 backedges. 532 proven. 632 refuted. 0 times theorem prover too weak. 5002 trivial. 0 not checked. [2024-09-20 19:50:40,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6166 backedges. 534 proven. 653 refuted. 0 times theorem prover too weak. 4979 trivial. 0 not checked. [2024-09-20 19:50:42,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203006949] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:42,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:42,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 17] total 36 [2024-09-20 19:50:42,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783199065] [2024-09-20 19:50:42,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:42,366 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 19:50:42,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:42,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 19:50:42,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 19:50:42,367 INFO L87 Difference]: Start difference. First operand 223 states and 285 transitions. Second operand has 36 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 36 states have internal predecessors, (104), 24 states have call successors, (33), 1 states have call predecessors, (33), 16 states have return successors, (44), 23 states have call predecessors, (44), 24 states have call successors, (44) [2024-09-20 19:50:42,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:42,806 INFO L93 Difference]: Finished difference Result 426 states and 575 transitions. [2024-09-20 19:50:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 19:50:42,806 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 36 states have internal predecessors, (104), 24 states have call successors, (33), 1 states have call predecessors, (33), 16 states have return successors, (44), 23 states have call predecessors, (44), 24 states have call successors, (44) Word has length 466 [2024-09-20 19:50:42,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:42,809 INFO L225 Difference]: With dead ends: 426 [2024-09-20 19:50:42,809 INFO L226 Difference]: Without dead ends: 177 [2024-09-20 19:50:42,811 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 1050 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=2733, Unknown=0, NotChecked=0, Total=3192 [2024-09-20 19:50:42,811 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 133 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:42,811 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 453 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:50:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-09-20 19:50:42,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 161. [2024-09-20 19:50:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 110 states have internal predecessors, (116), 32 states have call successors, (32), 26 states have call predecessors, (32), 16 states have return successors, (34), 24 states have call predecessors, (34), 31 states have call successors, (34) [2024-09-20 19:50:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 182 transitions. [2024-09-20 19:50:42,826 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 182 transitions. Word has length 466 [2024-09-20 19:50:42,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:42,826 INFO L474 AbstractCegarLoop]: Abstraction has 161 states and 182 transitions. [2024-09-20 19:50:42,826 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 36 states have internal predecessors, (104), 24 states have call successors, (33), 1 states have call predecessors, (33), 16 states have return successors, (44), 23 states have call predecessors, (44), 24 states have call successors, (44) [2024-09-20 19:50:42,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 182 transitions. [2024-09-20 19:50:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-09-20 19:50:42,828 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:42,828 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 37, 37, 31, 31, 20, 20, 20, 20, 20, 20, 20, 18, 18, 18, 18, 18, 18, 18, 13, 11, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:42,841 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-20 19:50:43,029 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 19:50:43,029 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:43,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:43,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1544679608, now seen corresponding path program 9 times [2024-09-20 19:50:43,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:43,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778180906] [2024-09-20 19:50:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:43,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:50:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 19:50:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 19:50:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:43,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 19:50:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-20 19:50:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 19:50:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 19:50:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:50:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 19:50:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 19:50:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 575 proven. 1278 refuted. 0 times theorem prover too weak. 6233 trivial. 0 not checked. [2024-09-20 19:50:44,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:44,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778180906] [2024-09-20 19:50:44,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778180906] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:44,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822685305] [2024-09-20 19:50:44,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:50:44,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:44,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:44,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:44,078 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-20 19:50:44,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-20 19:50:44,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:50:44,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-20 19:50:44,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 423 proven. 918 refuted. 0 times theorem prover too weak. 6745 trivial. 0 not checked. [2024-09-20 19:50:44,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8086 backedges. 429 proven. 936 refuted. 0 times theorem prover too weak. 6721 trivial. 0 not checked. [2024-09-20 19:50:46,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822685305] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:46,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:46,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 17] total 36 [2024-09-20 19:50:46,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901208659] [2024-09-20 19:50:46,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:46,054 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 19:50:46,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:46,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 19:50:46,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1075, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 19:50:46,056 INFO L87 Difference]: Start difference. First operand 161 states and 182 transitions. Second operand has 36 states, 35 states have (on average 3.0285714285714285) internal successors, (106), 36 states have internal predecessors, (106), 24 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 26 states have call predecessors, (47), 24 states have call successors, (47) [2024-09-20 19:50:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:46,457 INFO L93 Difference]: Finished difference Result 268 states and 302 transitions. [2024-09-20 19:50:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-20 19:50:46,458 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.0285714285714285) internal successors, (106), 36 states have internal predecessors, (106), 24 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 26 states have call predecessors, (47), 24 states have call successors, (47) Word has length 531 [2024-09-20 19:50:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:46,459 INFO L225 Difference]: With dead ends: 268 [2024-09-20 19:50:46,459 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 19:50:46,460 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1197 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=343, Invalid=2009, Unknown=0, NotChecked=0, Total=2352 [2024-09-20 19:50:46,461 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 55 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:46,461 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 509 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:50:46,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 19:50:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 19:50:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 19:50:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 19:50:46,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 531 [2024-09-20 19:50:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:46,463 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 19:50:46,463 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.0285714285714285) internal successors, (106), 36 states have internal predecessors, (106), 24 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 26 states have call predecessors, (47), 24 states have call successors, (47) [2024-09-20 19:50:46,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 19:50:46,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 19:50:46,465 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 19:50:46,479 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-20 19:50:46,666 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-20 19:50:46,669 INFO L408 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:46,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 19:50:56,716 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 19:50:56,735 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-20 19:50:56,744 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-20 19:50:56,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:50:56 BoogieIcfgContainer [2024-09-20 19:50:56,745 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 19:50:56,745 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 19:50:56,745 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 19:50:56,745 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 19:50:56,746 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:50:05" (3/4) ... [2024-09-20 19:50:56,747 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 19:50:56,798 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 19:50:56,798 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 19:50:56,798 INFO L158 Benchmark]: Toolchain (without parser) took 52229.34ms. Allocated memory was 180.4MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 150.4MB in the beginning and 925.3MB in the end (delta: -774.9MB). Peak memory consumption was 404.8MB. Max. memory is 16.1GB. [2024-09-20 19:50:56,799 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:50:56,799 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.64ms. Allocated memory is still 180.4MB. Free memory was 149.5MB in the beginning and 139.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 19:50:56,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.86ms. Allocated memory is still 180.4MB. Free memory was 139.0MB in the beginning and 138.0MB in the end (delta: 982.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:50:56,799 INFO L158 Benchmark]: Boogie Preprocessor took 36.17ms. Allocated memory is still 180.4MB. Free memory was 138.0MB in the beginning and 136.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:50:56,799 INFO L158 Benchmark]: RCFGBuilder took 281.97ms. Allocated memory is still 180.4MB. Free memory was 136.1MB in the beginning and 147.9MB in the end (delta: -11.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 19:50:56,800 INFO L158 Benchmark]: TraceAbstraction took 51660.91ms. Allocated memory was 180.4MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 147.0MB in the beginning and 927.4MB in the end (delta: -780.3MB). Peak memory consumption was 826.8MB. Max. memory is 16.1GB. [2024-09-20 19:50:56,800 INFO L158 Benchmark]: Witness Printer took 52.95ms. Allocated memory is still 1.4GB. Free memory was 927.4MB in the beginning and 925.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:50:56,801 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.64ms. Allocated memory is still 180.4MB. Free memory was 149.5MB in the beginning and 139.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.86ms. Allocated memory is still 180.4MB. Free memory was 139.0MB in the beginning and 138.0MB in the end (delta: 982.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.17ms. Allocated memory is still 180.4MB. Free memory was 138.0MB in the beginning and 136.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 281.97ms. Allocated memory is still 180.4MB. Free memory was 136.1MB in the beginning and 147.9MB in the end (delta: -11.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 51660.91ms. Allocated memory was 180.4MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 147.0MB in the beginning and 927.4MB in the end (delta: -780.3MB). Peak memory consumption was 826.8MB. Max. memory is 16.1GB. * Witness Printer took 52.95ms. Allocated memory is still 1.4GB. Free memory was 927.4MB in the beginning and 925.3MB 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: 41.5s, OverallIterations: 17, TraceHistogramMax: 40, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 995 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 904 mSDsluCounter, 8923 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8281 mSDsCounter, 837 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9966 IncrementalHoareTripleChecker+Invalid, 10803 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 837 mSolverCounterUnsat, 642 mSDtfsCounter, 9966 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9484 GetRequests, 8858 SyntacticMatches, 77 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6773 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=223occurred in iteration=15, InterpolantAutomatonStates: 413, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 240 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 30.1s InterpolantComputationTime, 7841 NumberOfCodeBlocks, 7098 NumberOfCodeBlocksAsserted, 107 NumberOfCheckSat, 11701 ConstructedInterpolants, 0 QuantifiedInterpolants, 17723 SizeOfPredicates, 58 NumberOfNonLiveVariables, 7229 ConjunctsInSsa, 439 ConjunctsInUnsatCore, 47 InterpolantComputations, 2 PerfectInterpolantSequences, 115926/134874 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: (((((\result == 0) || (\old(n) == 1)) || (1 < \old(n))) && (((\result == 1) || (\old(n) < 1)) || (3 < \old(n)))) && ((\result == 13) || (7 != \old(n)))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: ((((\old(n) != 1) || (\result == 1)) && (((((3 == \result) && (\old(n) == 4)) || (\old(n) == 1)) || (\old(n) < 1)) || (5 < \old(n)))) && (((\result == 0) || ((\old(n) == 1) && (\result == 1))) || (2 < \old(n)))) RESULT: Ultimate proved your program to be correct! [2024-09-20 19:50:56,822 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE