./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/egcd-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/egcd-ll.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 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 10:38:48,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 10:38:48,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 10:38:48,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 10:38:48,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 10:38:48,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 10:38:48,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 10:38:48,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 10:38:48,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 10:38:48,982 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 10:38:48,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 10:38:48,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 10:38:48,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 10:38:48,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 10:38:48,986 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 10:38:48,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 10:38:48,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 10:38:48,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 10:38:48,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 10:38:48,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 10:38:48,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 10:38:48,990 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 10:38:48,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 10:38:48,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 10:38:48,991 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 10:38:48,991 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 10:38:48,991 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 10:38:48,992 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 10:38:48,992 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 10:38:48,992 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 10:38:48,992 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 10:38:48,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 10:38:48,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:38:48,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 10:38:48,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 10:38:48,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 10:38:48,994 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 10:38:48,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 10:38:48,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 10:38:48,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 10:38:48,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 10:38:48,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 10:38:48,996 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 -> 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 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.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true 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 [2024-09-25 10:38:49,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 10:38:49,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 10:38:49,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 10:38:49,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 10:38:49,335 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 10:38:49,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/egcd-ll.c [2024-09-25 10:38:50,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 10:38:51,118 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 10:38:51,119 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/egcd-ll.c [2024-09-25 10:38:51,131 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4bae86f96/88ef2f0b09424c54b1de08d33b054381/FLAG5044a3111 [2024-09-25 10:38:51,150 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4bae86f96/88ef2f0b09424c54b1de08d33b054381 [2024-09-25 10:38:51,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 10:38:51,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 10:38:51,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 10:38:51,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 10:38:51,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 10:38:51,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6216dc7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51, skipping insertion in model container [2024-09-25 10:38:51,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,188 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 10:38:51,354 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/nla-digbench/egcd-ll.c[489,502] [2024-09-25 10:38:51,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:38:51,388 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 10:38:51,413 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/nla-digbench/egcd-ll.c[489,502] [2024-09-25 10:38:51,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:38:51,442 INFO L204 MainTranslator]: Completed translation [2024-09-25 10:38:51,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51 WrapperNode [2024-09-25 10:38:51,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 10:38:51,445 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 10:38:51,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 10:38:51,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 10:38:51,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,464 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 10:38:51,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 10:38:51,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 10:38:51,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 10:38:51,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 10:38:51,475 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,494 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]. [2024-09-25 10:38:51,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,501 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,505 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 10:38:51,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 10:38:51,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 10:38:51,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 10:38:51,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (1/1) ... [2024-09-25 10:38:51,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:38:51,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:38:51,553 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) [2024-09-25 10:38:51,556 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 [2024-09-25 10:38:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 10:38:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 10:38:51,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 10:38:51,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 10:38:51,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 10:38:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 10:38:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 10:38:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 10:38:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 10:38:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 10:38:51,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 10:38:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 10:38:51,662 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 10:38:51,664 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 10:38:51,865 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-25 10:38:51,867 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 10:38:51,890 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 10:38:51,891 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 10:38:51,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:38:51 BoogieIcfgContainer [2024-09-25 10:38:51,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 10:38:51,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 10:38:51,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 10:38:51,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 10:38:51,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:38:51" (1/3) ... [2024-09-25 10:38:51,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4805901f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:38:51, skipping insertion in model container [2024-09-25 10:38:51,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:38:51" (2/3) ... [2024-09-25 10:38:51,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4805901f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:38:51, skipping insertion in model container [2024-09-25 10:38:51,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:38:51" (3/3) ... [2024-09-25 10:38:51,906 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2024-09-25 10:38:51,935 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 10:38:51,936 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 10:38:52,010 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 10:38:52,020 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;@40418282, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 10:38:52,020 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 10:38:52,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-25 10:38:52,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-25 10:38:52,032 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:38:52,032 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:38:52,033 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:38:52,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:52,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1455345481, now seen corresponding path program 1 times [2024-09-25 10:38:52,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:38:52,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485701759] [2024-09-25 10:38:52,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:52,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:38:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:52,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:38:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:52,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:38:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:52,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 10:38:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 10:38:52,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:38:52,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485701759] [2024-09-25 10:38:52,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485701759] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:38:52,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:38:52,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 10:38:52,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001765678] [2024-09-25 10:38:52,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:38:52,245 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 10:38:52,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:38:52,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 10:38:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:38:52,271 INFO L87 Difference]: Start difference. First operand has 32 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 10:38:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:38:52,295 INFO L93 Difference]: Finished difference Result 58 states and 90 transitions. [2024-09-25 10:38:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 10:38:52,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-25 10:38:52,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:38:52,305 INFO L225 Difference]: With dead ends: 58 [2024-09-25 10:38:52,305 INFO L226 Difference]: Without dead ends: 28 [2024-09-25 10:38:52,309 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:38:52,313 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:38:52,314 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:38:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-25 10:38:52,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-25 10:38:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 10:38:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2024-09-25 10:38:52,349 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 21 [2024-09-25 10:38:52,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:38:52,356 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2024-09-25 10:38:52,356 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 10:38:52,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:52,358 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2024-09-25 10:38:52,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-25 10:38:52,360 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:38:52,361 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:38:52,361 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 10:38:52,361 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:38:52,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:52,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1125954897, now seen corresponding path program 1 times [2024-09-25 10:38:52,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:38:52,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023815489] [2024-09-25 10:38:52,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:52,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:38:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:38:52,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852877043] [2024-09-25 10:38:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:52,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:52,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:38:52,406 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) [2024-09-25 10:38:52,408 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 10:38:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:52,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-25 10:38:52,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:38:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 10:38:52,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:38:52,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:38:52,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023815489] [2024-09-25 10:38:52,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:38:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852877043] [2024-09-25 10:38:52,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852877043] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:38:52,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:38:52,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:38:52,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22921882] [2024-09-25 10:38:52,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:38:52,615 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:38:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:38:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:38:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:38:52,616 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-25 10:38:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:38:52,710 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2024-09-25 10:38:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:38:52,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-25 10:38:52,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:38:52,712 INFO L225 Difference]: With dead ends: 44 [2024-09-25 10:38:52,713 INFO L226 Difference]: Without dead ends: 42 [2024-09-25 10:38:52,713 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 10:38:52,714 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:38:52,715 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 109 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:38:52,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-25 10:38:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2024-09-25 10:38:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 10:38:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 56 transitions. [2024-09-25 10:38:52,729 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 56 transitions. Word has length 21 [2024-09-25 10:38:52,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:38:52,729 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 56 transitions. [2024-09-25 10:38:52,729 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-25 10:38:52,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:52,730 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions. [2024-09-25 10:38:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-25 10:38:52,731 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:38:52,731 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:38:52,746 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 10:38:52,935 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:52,936 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:38:52,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash -893829407, now seen corresponding path program 1 times [2024-09-25 10:38:52,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:38:52,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620347224] [2024-09-25 10:38:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:52,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:38:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:38:52,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903672881] [2024-09-25 10:38:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:52,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:52,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:38:52,963 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) [2024-09-25 10:38:52,965 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 10:38:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:53,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-25 10:38:53,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:38:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 10:38:53,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:38:53,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:38:53,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620347224] [2024-09-25 10:38:53,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:38:53,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903672881] [2024-09-25 10:38:53,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903672881] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:38:53,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:38:53,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:38:53,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560756789] [2024-09-25 10:38:53,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:38:53,121 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:38:53,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:38:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:38:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:38:53,122 INFO L87 Difference]: Start difference. First operand 41 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 10:38:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:38:53,196 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2024-09-25 10:38:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:38:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-25 10:38:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:38:53,198 INFO L225 Difference]: With dead ends: 48 [2024-09-25 10:38:53,198 INFO L226 Difference]: Without dead ends: 46 [2024-09-25 10:38:53,199 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 10:38:53,200 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:38:53,200 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:38:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-25 10:38:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-09-25 10:38:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 10:38:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2024-09-25 10:38:53,219 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 26 [2024-09-25 10:38:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:38:53,219 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2024-09-25 10:38:53,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 10:38:53,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2024-09-25 10:38:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-25 10:38:53,223 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:38:53,224 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:38:53,241 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 10:38:53,424 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:53,425 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:38:53,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:53,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1650542353, now seen corresponding path program 1 times [2024-09-25 10:38:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:38:53,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713634251] [2024-09-25 10:38:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:53,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:38:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:38:53,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88843438] [2024-09-25 10:38:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:53,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:53,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:38:53,458 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) [2024-09-25 10:38:53,460 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 10:38:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:53,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-25 10:38:53,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:38:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-25 10:38:53,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:38:53,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:38:53,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713634251] [2024-09-25 10:38:53,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:38:53,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88843438] [2024-09-25 10:38:53,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88843438] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:38:53,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:38:53,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:38:53,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45469627] [2024-09-25 10:38:53,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:38:53,570 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:38:53,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:38:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:38:53,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:38:53,571 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 10:38:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:38:53,641 INFO L93 Difference]: Finished difference Result 70 states and 99 transitions. [2024-09-25 10:38:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:38:53,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2024-09-25 10:38:53,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:38:53,649 INFO L225 Difference]: With dead ends: 70 [2024-09-25 10:38:53,649 INFO L226 Difference]: Without dead ends: 66 [2024-09-25 10:38:53,650 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 10:38:53,651 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:38:53,653 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 111 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:38:53,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-25 10:38:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-25 10:38:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 35 states have internal predecessors, (40), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-25 10:38:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2024-09-25 10:38:53,681 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 31 [2024-09-25 10:38:53,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:38:53,681 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2024-09-25 10:38:53,681 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 10:38:53,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:53,682 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2024-09-25 10:38:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-25 10:38:53,683 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:38:53,683 INFO L216 NwaCegarLoop]: trace histogram [4, 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] [2024-09-25 10:38:53,698 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 10:38:53,888 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:53,888 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:38:53,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1101528784, now seen corresponding path program 1 times [2024-09-25 10:38:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:38:53,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098155737] [2024-09-25 10:38:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:53,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:38:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:38:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:38:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 10:38:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-25 10:38:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-25 10:38:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:38:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-25 10:38:54,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:38:54,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098155737] [2024-09-25 10:38:54,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098155737] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:38:54,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:38:54,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:38:54,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384319299] [2024-09-25 10:38:54,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:38:54,114 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:38:54,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:38:54,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:38:54,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:38:54,115 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-25 10:38:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:38:54,177 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2024-09-25 10:38:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:38:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37 [2024-09-25 10:38:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:38:54,179 INFO L225 Difference]: With dead ends: 72 [2024-09-25 10:38:54,180 INFO L226 Difference]: Without dead ends: 70 [2024-09-25 10:38:54,180 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 10:38:54,182 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:38:54,183 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 120 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:38:54,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-25 10:38:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-09-25 10:38:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 38 states have internal predecessors, (43), 28 states have call successors, (28), 8 states have call predecessors, (28), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-25 10:38:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 95 transitions. [2024-09-25 10:38:54,209 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 95 transitions. Word has length 37 [2024-09-25 10:38:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:38:54,209 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 95 transitions. [2024-09-25 10:38:54,210 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-25 10:38:54,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 95 transitions. [2024-09-25 10:38:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-25 10:38:54,211 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:38:54,211 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:38:54,211 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-25 10:38:54,211 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:38:54,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:54,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1622352051, now seen corresponding path program 1 times [2024-09-25 10:38:54,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:38:54,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197323475] [2024-09-25 10:38:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:54,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:38:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:38:54,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715803975] [2024-09-25 10:38:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:54,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:54,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:38:54,243 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) [2024-09-25 10:38:54,245 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 10:38:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-25 10:38:54,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:38:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 10:38:54,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:38:54,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:38:54,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197323475] [2024-09-25 10:38:54,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:38:54,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715803975] [2024-09-25 10:38:54,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715803975] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:38:54,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:38:54,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:38:54,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156496750] [2024-09-25 10:38:54,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:38:54,423 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:38:54,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:38:54,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:38:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:38:54,424 INFO L87 Difference]: Start difference. First operand 70 states and 95 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-25 10:38:54,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:38:54,487 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2024-09-25 10:38:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:38:54,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2024-09-25 10:38:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:38:54,488 INFO L225 Difference]: With dead ends: 80 [2024-09-25 10:38:54,488 INFO L226 Difference]: Without dead ends: 77 [2024-09-25 10:38:54,489 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 10:38:54,490 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:38:54,490 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 118 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:38:54,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-25 10:38:54,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2024-09-25 10:38:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 40 states have (on average 1.225) internal successors, (49), 43 states have internal predecessors, (49), 25 states have call successors, (25), 10 states have call predecessors, (25), 9 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-25 10:38:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2024-09-25 10:38:54,513 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 39 [2024-09-25 10:38:54,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:38:54,513 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2024-09-25 10:38:54,515 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-25 10:38:54,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2024-09-25 10:38:54,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-25 10:38:54,517 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:38:54,517 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2024-09-25 10:38:54,535 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 10:38:54,717 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 [2024-09-25 10:38:54,718 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:38:54,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:54,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1780329470, now seen corresponding path program 1 times [2024-09-25 10:38:54,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:38:54,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457932935] [2024-09-25 10:38:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:54,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:38:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:38:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:38:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 10:38:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-25 10:38:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-25 10:38:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:54,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:38:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:55,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 10:38:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-25 10:38:55,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:38:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457932935] [2024-09-25 10:38:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457932935] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:38:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510068777] [2024-09-25 10:38:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:55,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:55,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:38:55,011 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) [2024-09-25 10:38:55,013 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 10:38:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:55,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-25 10:38:55,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:38:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 10:38:55,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:38:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510068777] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:38:55,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:38:55,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-25 10:38:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097354065] [2024-09-25 10:38:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:38:55,160 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-25 10:38:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:38:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-25 10:38:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-25 10:38:55,161 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-25 10:38:55,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:38:55,265 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2024-09-25 10:38:55,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 10:38:55,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 42 [2024-09-25 10:38:55,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:38:55,267 INFO L225 Difference]: With dead ends: 88 [2024-09-25 10:38:55,267 INFO L226 Difference]: Without dead ends: 84 [2024-09-25 10:38:55,267 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-09-25 10:38:55,268 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:38:55,268 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:38:55,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-25 10:38:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2024-09-25 10:38:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.173913043478261) internal successors, (54), 49 states have internal predecessors, (54), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-25 10:38:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2024-09-25 10:38:55,293 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 42 [2024-09-25 10:38:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:38:55,294 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2024-09-25 10:38:55,294 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-25 10:38:55,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2024-09-25 10:38:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-25 10:38:55,297 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:38:55,297 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:38:55,318 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-25 10:38:55,498 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 [2024-09-25 10:38:55,498 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:38:55,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash 826274405, now seen corresponding path program 2 times [2024-09-25 10:38:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:38:55,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424160265] [2024-09-25 10:38:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:55,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:38:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:38:55,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742075208] [2024-09-25 10:38:55,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:38:55,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:55,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:38:55,525 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) [2024-09-25 10:38:55,527 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 10:38:55,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:38:55,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:38:55,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-25 10:38:55,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:38:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-25 10:38:55,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:38:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-25 10:38:56,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:38:56,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424160265] [2024-09-25 10:38:56,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:38:56,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742075208] [2024-09-25 10:38:56,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742075208] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:38:56,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:38:56,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-09-25 10:38:56,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395171924] [2024-09-25 10:38:56,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:38:56,038 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-25 10:38:56,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:38:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-25 10:38:56,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-25 10:38:56,040 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-25 10:38:56,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:38:56,586 INFO L93 Difference]: Finished difference Result 107 states and 138 transitions. [2024-09-25 10:38:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 10:38:56,587 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 44 [2024-09-25 10:38:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:38:56,588 INFO L225 Difference]: With dead ends: 107 [2024-09-25 10:38:56,588 INFO L226 Difference]: Without dead ends: 92 [2024-09-25 10:38:56,589 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-09-25 10:38:56,589 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 10:38:56,590 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 214 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 10:38:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-25 10:38:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 75. [2024-09-25 10:38:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 45 states have internal predecessors, (50), 21 states have call successors, (21), 11 states have call predecessors, (21), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:38:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2024-09-25 10:38:56,613 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 44 [2024-09-25 10:38:56,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:38:56,614 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2024-09-25 10:38:56,614 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-25 10:38:56,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:56,614 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2024-09-25 10:38:56,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-25 10:38:56,616 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:38:56,616 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 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] [2024-09-25 10:38:56,634 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 10:38:56,820 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 [2024-09-25 10:38:56,821 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:38:56,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:56,821 INFO L85 PathProgramCache]: Analyzing trace with hash 273068935, now seen corresponding path program 1 times [2024-09-25 10:38:56,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:38:56,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858914785] [2024-09-25 10:38:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:56,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:38:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:38:56,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621914988] [2024-09-25 10:38:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:56,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:56,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:38:56,843 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) [2024-09-25 10:38:56,845 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 10:38:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:56,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 10:38:56,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:38:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-25 10:38:57,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:38:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-09-25 10:38:57,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:38:57,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858914785] [2024-09-25 10:38:57,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:38:57,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621914988] [2024-09-25 10:38:57,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621914988] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 10:38:57,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:38:57,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-09-25 10:38:57,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223375665] [2024-09-25 10:38:57,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:38:57,194 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:38:57,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:38:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:38:57,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-25 10:38:57,195 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-25 10:38:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:38:57,282 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2024-09-25 10:38:57,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:38:57,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2024-09-25 10:38:57,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:38:57,284 INFO L225 Difference]: With dead ends: 81 [2024-09-25 10:38:57,284 INFO L226 Difference]: Without dead ends: 76 [2024-09-25 10:38:57,284 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-25 10:38:57,285 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:38:57,285 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:38:57,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-09-25 10:38:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-09-25 10:38:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 states have internal predecessors, (51), 18 states have call successors, (18), 12 states have call predecessors, (18), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:38:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2024-09-25 10:38:57,326 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 57 [2024-09-25 10:38:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:38:57,327 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2024-09-25 10:38:57,327 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-25 10:38:57,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2024-09-25 10:38:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-25 10:38:57,329 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:38:57,329 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 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] [2024-09-25 10:38:57,348 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 10:38:57,534 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 [2024-09-25 10:38:57,535 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:38:57,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:57,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1908834426, now seen corresponding path program 1 times [2024-09-25 10:38:57,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:38:57,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937805441] [2024-09-25 10:38:57,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:57,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:38:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:38:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:38:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 10:38:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-25 10:38:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-25 10:38:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:38:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-25 10:38:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:38:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:38:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 10:38:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-09-25 10:38:57,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:38:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937805441] [2024-09-25 10:38:57,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937805441] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:38:57,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385586557] [2024-09-25 10:38:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:38:57,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:38:57,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:38:57,778 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) [2024-09-25 10:38:57,780 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 10:38:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:38:57,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 10:38:57,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:38:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-09-25 10:38:57,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:38:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-09-25 10:38:57,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385586557] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:38:57,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:38:57,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-09-25 10:38:57,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866350647] [2024-09-25 10:38:57,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:38:57,986 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-25 10:38:57,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:38:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-25 10:38:57,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-25 10:38:57,987 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-25 10:38:58,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:38:58,145 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2024-09-25 10:38:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 10:38:58,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 60 [2024-09-25 10:38:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:38:58,146 INFO L225 Difference]: With dead ends: 81 [2024-09-25 10:38:58,146 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 10:38:58,148 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-25 10:38:58,148 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:38:58,149 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 134 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:38:58,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 10:38:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 10:38:58,149 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) [2024-09-25 10:38:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 10:38:58,149 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2024-09-25 10:38:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:38:58,150 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 10:38:58,150 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-25 10:38:58,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:38:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 10:38:58,151 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 10:38:58,154 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 10:38:58,172 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-25 10:38:58,354 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 [2024-09-25 10:38:58,358 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:38:58,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 10:39:07,326 WARN L293 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 61 DAG size of output: 24 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-25 10:39:07,558 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 10:39:07,576 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:39:07,577 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:39:07,577 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:39:07,577 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:39:07,577 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:39:07,578 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:39:07,578 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:39:07,578 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:39:07,578 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:39:07,578 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:39:07,578 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:39:07,579 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:39:07,579 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:39:07,579 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:39:07,579 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:39:07,579 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:39:07,580 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:39:07,580 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:39:07,580 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:39:07,580 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:39:07,580 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:39:07,581 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:39:07,581 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:39:07,581 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:39:07,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:39:07 BoogieIcfgContainer [2024-09-25 10:39:07,582 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 10:39:07,582 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 10:39:07,583 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 10:39:07,583 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 10:39:07,583 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:38:51" (3/4) ... [2024-09-25 10:39:07,585 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 10:39:07,639 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 10:39:07,639 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 10:39:07,640 INFO L158 Benchmark]: Toolchain (without parser) took 16484.45ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 41.7MB in the beginning and 32.4MB in the end (delta: 9.3MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2024-09-25 10:39:07,641 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:39:07,641 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.72ms. Allocated memory is still 69.2MB. Free memory was 41.5MB in the beginning and 47.6MB in the end (delta: -6.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2024-09-25 10:39:07,641 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.13ms. Allocated memory is still 69.2MB. Free memory was 47.6MB in the beginning and 46.7MB in the end (delta: 864.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:39:07,641 INFO L158 Benchmark]: Boogie Preprocessor took 46.51ms. Allocated memory is still 69.2MB. Free memory was 46.7MB in the beginning and 44.9MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-25 10:39:07,642 INFO L158 Benchmark]: RCFGBuilder took 378.77ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 32.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 10:39:07,642 INFO L158 Benchmark]: TraceAbstraction took 15685.06ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 31.3MB in the beginning and 34.5MB in the end (delta: -3.2MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2024-09-25 10:39:07,643 INFO L158 Benchmark]: Witness Printer took 57.05ms. Allocated memory is still 104.9MB. Free memory was 34.5MB in the beginning and 32.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 10:39:07,644 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.72ms. Allocated memory is still 69.2MB. Free memory was 41.5MB in the beginning and 47.6MB in the end (delta: -6.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.13ms. Allocated memory is still 69.2MB. Free memory was 47.6MB in the beginning and 46.7MB in the end (delta: 864.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.51ms. Allocated memory is still 69.2MB. Free memory was 46.7MB in the beginning and 44.9MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 378.77ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 32.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15685.06ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 31.3MB in the beginning and 34.5MB in the end (delta: -3.2MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Witness Printer took 57.05ms. Allocated memory is still 104.9MB. Free memory was 34.5MB in the beginning and 32.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid * 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: 13]: 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: 6.4s, OverallIterations: 10, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 1184 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 882 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 528 IncrementalHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 302 mSDtfsCounter, 528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 564 GetRequests, 497 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=7, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 24 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 698 NumberOfCodeBlocks, 698 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 626 ConstructedInterpolants, 0 QuantifiedInterpolants, 1838 SizeOfPredicates, 14 NumberOfNonLiveVariables, 868 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 657/715 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 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((__int128) q * x) + a) + ((__int128) y * s)) == ((((__int128) y * r) + b) + ((__int128) p * x))) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (((__int128) p * s) == (((__int128) q * r) + 1))) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-25 10:39:07,667 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