./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.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 ca6b6f09277139d829682a6458fdcdacf72411331aa404fd46248e3dcb9a9e7f --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 19:38:23,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 19:38:24,033 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 19:38:24,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 19:38:24,038 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 19:38:24,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 19:38:24,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 19:38:24,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 19:38:24,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 19:38:24,064 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 19:38:24,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 19:38:24,065 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 19:38:24,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 19:38:24,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 19:38:24,065 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 19:38:24,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 19:38:24,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 19:38:24,066 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 19:38:24,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 19:38:24,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 19:38:24,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 19:38:24,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 19:38:24,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 19:38:24,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 19:38:24,071 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 19:38:24,072 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 19:38:24,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 19:38:24,072 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 19:38:24,072 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 19:38:24,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 19:38:24,072 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 19:38:24,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 19:38:24,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:38:24,073 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 19:38:24,073 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 19:38:24,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 19:38:24,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 19:38:24,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 19:38:24,074 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 19:38:24,074 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 19:38:24,077 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 19:38:24,077 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 19:38:24,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca6b6f09277139d829682a6458fdcdacf72411331aa404fd46248e3dcb9a9e7f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 19:38:24,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 19:38:24,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 19:38:24,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 19:38:24,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 19:38:24,369 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 19:38:24,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2024-09-15 19:38:25,704 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 19:38:25,847 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 19:38:25,847 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2024-09-15 19:38:25,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9c082f6fd/46902a1fbebb465c85b9d1a3d0183975/FLAGdf96eaba0 [2024-09-15 19:38:26,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9c082f6fd/46902a1fbebb465c85b9d1a3d0183975 [2024-09-15 19:38:26,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 19:38:26,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 19:38:26,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 19:38:26,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 19:38:26,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 19:38:26,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708f7e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26, skipping insertion in model container [2024-09-15 19:38:26,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,281 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 19:38:26,398 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-scaling/prodbin-ll_valuebound10.c[537,550] [2024-09-15 19:38:26,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:38:26,421 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 19:38:26,431 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-scaling/prodbin-ll_valuebound10.c[537,550] [2024-09-15 19:38:26,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:38:26,455 INFO L204 MainTranslator]: Completed translation [2024-09-15 19:38:26,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26 WrapperNode [2024-09-15 19:38:26,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 19:38:26,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 19:38:26,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 19:38:26,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 19:38:26,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,471 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 19:38:26,472 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 19:38:26,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 19:38:26,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 19:38:26,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 19:38:26,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,502 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]. [2024-09-15 19:38:26,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,511 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 19:38:26,512 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 19:38:26,514 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 19:38:26,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 19:38:26,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (1/1) ... [2024-09-15 19:38:26,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:38:26,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:38:26,539 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) [2024-09-15 19:38:26,541 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 [2024-09-15 19:38:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 19:38:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-15 19:38:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-15 19:38:26,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 19:38:26,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 19:38:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 19:38:26,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 19:38:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 19:38:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 19:38:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 19:38:26,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 19:38:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 19:38:26,628 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 19:38:26,630 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 19:38:26,759 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-15 19:38:26,760 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 19:38:26,782 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 19:38:26,783 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 19:38:26,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:38:26 BoogieIcfgContainer [2024-09-15 19:38:26,783 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 19:38:26,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 19:38:26,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 19:38:26,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 19:38:26,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:38:26" (1/3) ... [2024-09-15 19:38:26,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15110c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:38:26, skipping insertion in model container [2024-09-15 19:38:26,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:38:26" (2/3) ... [2024-09-15 19:38:26,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15110c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:38:26, skipping insertion in model container [2024-09-15 19:38:26,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:38:26" (3/3) ... [2024-09-15 19:38:26,793 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound10.c [2024-09-15 19:38:26,806 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 19:38:26,807 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 19:38:26,854 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 19:38:26,861 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;@1ae5300b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 19:38:26,861 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 19:38:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 19:38:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-15 19:38:26,871 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:38:26,872 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:38:26,873 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:38:26,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2062108722, now seen corresponding path program 1 times [2024-09-15 19:38:26,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:38:26,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005758515] [2024-09-15 19:38:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:26,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:38:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:26,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:38:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:26,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:38:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:27,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:38:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:27,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 19:38:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 19:38:27,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:38:27,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005758515] [2024-09-15 19:38:27,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005758515] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:38:27,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:38:27,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 19:38:27,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709538064] [2024-09-15 19:38:27,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:38:27,033 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 19:38:27,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:38:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 19:38:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 19:38:27,055 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 19:38:27,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:38:27,081 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2024-09-15 19:38:27,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 19:38:27,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-15 19:38:27,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:38:27,087 INFO L225 Difference]: With dead ends: 54 [2024-09-15 19:38:27,088 INFO L226 Difference]: Without dead ends: 26 [2024-09-15 19:38:27,090 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 19:38:27,092 INFO L434 NwaCegarLoop]: 32 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, 32 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 [2024-09-15 19:38:27,093 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:38:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-15 19:38:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-15 19:38:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 19:38:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-09-15 19:38:27,118 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 27 [2024-09-15 19:38:27,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:38:27,119 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-09-15 19:38:27,119 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 19:38:27,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-09-15 19:38:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-15 19:38:27,121 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:38:27,121 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:38:27,121 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 19:38:27,122 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:38:27,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1085938704, now seen corresponding path program 1 times [2024-09-15 19:38:27,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:38:27,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852639502] [2024-09-15 19:38:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:27,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:38:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:38:27,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387988000] [2024-09-15 19:38:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:27,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:38:27,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:38:27,176 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) [2024-09-15 19:38:27,177 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 19:38:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:27,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-15 19:38:27,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:38:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-15 19:38:27,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:38:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 19:38:27,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:38:27,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852639502] [2024-09-15 19:38:27,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:38:27,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387988000] [2024-09-15 19:38:27,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387988000] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 19:38:27,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 19:38:27,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-09-15 19:38:27,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077605853] [2024-09-15 19:38:27,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:38:27,572 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:38:27,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:38:27,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:38:27,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-15 19:38:27,574 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 19:38:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:38:27,677 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-09-15 19:38:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:38:27,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-15 19:38:27,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:38:27,679 INFO L225 Difference]: With dead ends: 37 [2024-09-15 19:38:27,680 INFO L226 Difference]: Without dead ends: 35 [2024-09-15 19:38:27,680 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-15 19:38:27,682 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:38:27,683 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:38:27,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-15 19:38:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-09-15 19:38:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 19:38:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-15 19:38:27,697 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 27 [2024-09-15 19:38:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:38:27,698 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-15 19:38:27,699 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-15 19:38:27,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-15 19:38:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-15 19:38:27,700 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:38:27,700 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:38:27,713 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-15 19:38:27,901 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 [2024-09-15 19:38:27,901 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:38:27,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1368497365, now seen corresponding path program 1 times [2024-09-15 19:38:27,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:38:27,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876144603] [2024-09-15 19:38:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:27,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:38:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:28,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:38:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:28,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:38:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:28,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:38:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:28,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 19:38:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:28,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:38:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-15 19:38:28,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:38:28,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876144603] [2024-09-15 19:38:28,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876144603] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:38:28,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:38:28,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-15 19:38:28,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037457671] [2024-09-15 19:38:28,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:38:28,120 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 19:38:28,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:38:28,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 19:38:28,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-15 19:38:28,121 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-15 19:38:28,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:38:28,197 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-09-15 19:38:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 19:38:28,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-15 19:38:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:38:28,199 INFO L225 Difference]: With dead ends: 42 [2024-09-15 19:38:28,199 INFO L226 Difference]: Without dead ends: 35 [2024-09-15 19:38:28,203 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-15 19:38:28,204 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:38:28,206 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:38:28,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-15 19:38:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-09-15 19:38:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 19:38:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-15 19:38:28,217 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2024-09-15 19:38:28,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:38:28,219 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-15 19:38:28,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-15 19:38:28,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-15 19:38:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-15 19:38:28,220 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:38:28,220 INFO L216 NwaCegarLoop]: trace histogram [3, 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] [2024-09-15 19:38:28,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 19:38:28,221 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:38:28,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:28,221 INFO L85 PathProgramCache]: Analyzing trace with hash -65395240, now seen corresponding path program 1 times [2024-09-15 19:38:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:38:28,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531905887] [2024-09-15 19:38:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:28,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:38:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:38:28,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842991849] [2024-09-15 19:38:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:28,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:38:28,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:38:28,249 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) [2024-09-15 19:38:28,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 19:38:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:28,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-15 19:38:28,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:38:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 19:38:28,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:38:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 19:38:29,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:38:29,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531905887] [2024-09-15 19:38:29,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:38:29,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842991849] [2024-09-15 19:38:29,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842991849] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 19:38:29,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 19:38:29,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-09-15 19:38:29,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261909334] [2024-09-15 19:38:29,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:38:29,481 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 19:38:29,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:38:29,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 19:38:29,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-09-15 19:38:29,482 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 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) [2024-09-15 19:38:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:38:29,645 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-09-15 19:38:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 19:38:29,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 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 36 [2024-09-15 19:38:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:38:29,647 INFO L225 Difference]: With dead ends: 45 [2024-09-15 19:38:29,648 INFO L226 Difference]: Without dead ends: 43 [2024-09-15 19:38:29,649 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-15 19:38:29,649 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:38:29,650 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:38:29,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-15 19:38:29,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-09-15 19:38:29,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 19:38:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-09-15 19:38:29,661 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2024-09-15 19:38:29,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:38:29,661 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-09-15 19:38:29,662 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 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) [2024-09-15 19:38:29,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:29,662 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-09-15 19:38:29,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-15 19:38:29,663 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:38:29,663 INFO L216 NwaCegarLoop]: trace histogram [3, 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] [2024-09-15 19:38:29,676 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 19:38:29,867 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:38:29,868 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:38:29,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1709612122, now seen corresponding path program 1 times [2024-09-15 19:38:29,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:38:29,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431937531] [2024-09-15 19:38:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:29,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:38:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:38:29,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272174964] [2024-09-15 19:38:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:29,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:38:29,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:38:29,894 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) [2024-09-15 19:38:29,896 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 19:38:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:29,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-15 19:38:29,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:38:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-15 19:38:30,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:38:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-15 19:38:30,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:38:30,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431937531] [2024-09-15 19:38:30,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:38:30,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272174964] [2024-09-15 19:38:30,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272174964] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:38:30,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:38:30,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2024-09-15 19:38:30,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351568082] [2024-09-15 19:38:30,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:38:30,784 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 19:38:30,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:38:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 19:38:30,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-15 19:38:30,784 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-15 19:38:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:38:31,350 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-09-15 19:38:31,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-15 19:38:31,350 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 36 [2024-09-15 19:38:31,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:38:31,352 INFO L225 Difference]: With dead ends: 67 [2024-09-15 19:38:31,353 INFO L226 Difference]: Without dead ends: 60 [2024-09-15 19:38:31,353 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2024-09-15 19:38:31,354 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:38:31,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 161 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:38:31,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-15 19:38:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-15 19:38:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-15 19:38:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-09-15 19:38:31,366 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 36 [2024-09-15 19:38:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:38:31,367 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-09-15 19:38:31,367 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-15 19:38:31,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-09-15 19:38:31,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-15 19:38:31,368 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:38:31,368 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 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, 1] [2024-09-15 19:38:31,381 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-15 19:38:31,569 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:38:31,569 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:38:31,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1894068381, now seen corresponding path program 1 times [2024-09-15 19:38:31,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:38:31,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840482836] [2024-09-15 19:38:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:31,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:38:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:38:31,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222637837] [2024-09-15 19:38:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:31,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:38:31,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:38:31,586 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) [2024-09-15 19:38:31,588 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 19:38:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:31,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-15 19:38:31,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:38:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-15 19:38:31,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:38:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-15 19:38:31,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:38:31,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840482836] [2024-09-15 19:38:31,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:38:31,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222637837] [2024-09-15 19:38:31,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222637837] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:38:31,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:38:31,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-09-15 19:38:31,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089659342] [2024-09-15 19:38:31,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:38:31,772 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-15 19:38:31,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:38:31,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-15 19:38:31,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-15 19:38:31,773 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-15 19:38:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:38:31,850 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-15 19:38:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 19:38:31,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 42 [2024-09-15 19:38:31,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:38:31,852 INFO L225 Difference]: With dead ends: 67 [2024-09-15 19:38:31,852 INFO L226 Difference]: Without dead ends: 60 [2024-09-15 19:38:31,852 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-15 19:38:31,853 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:38:31,853 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:38:31,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-15 19:38:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-09-15 19:38:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-15 19:38:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-09-15 19:38:31,866 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 42 [2024-09-15 19:38:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:38:31,866 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-09-15 19:38:31,867 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-15 19:38:31,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-09-15 19:38:31,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-15 19:38:31,871 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:38:31,871 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:38:31,888 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 19:38:32,072 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 [2024-09-15 19:38:32,072 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:38:32,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:32,072 INFO L85 PathProgramCache]: Analyzing trace with hash -455011438, now seen corresponding path program 1 times [2024-09-15 19:38:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:38:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712056368] [2024-09-15 19:38:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:32,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:38:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:38:32,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331178550] [2024-09-15 19:38:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:32,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:38:32,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:38:32,110 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) [2024-09-15 19:38:32,111 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 19:38:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:32,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-15 19:38:32,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:38:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-15 19:38:32,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:38:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-15 19:38:37,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:38:37,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712056368] [2024-09-15 19:38:37,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:38:37,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331178550] [2024-09-15 19:38:37,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331178550] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:38:37,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:38:37,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2024-09-15 19:38:37,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579102289] [2024-09-15 19:38:37,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:38:37,062 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-15 19:38:37,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:38:37,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-15 19:38:37,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-09-15 19:38:37,063 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-15 19:38:38,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 19:38:46,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:38:46,112 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2024-09-15 19:38:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-15 19:38:46,113 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 45 [2024-09-15 19:38:46,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:38:46,114 INFO L225 Difference]: With dead ends: 90 [2024-09-15 19:38:46,114 INFO L226 Difference]: Without dead ends: 88 [2024-09-15 19:38:46,114 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2024-09-15 19:38:46,115 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-09-15 19:38:46,115 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 151 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-09-15 19:38:46,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-15 19:38:46,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2024-09-15 19:38:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.14) internal successors, (57), 52 states have internal predecessors, (57), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 19:38:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2024-09-15 19:38:46,132 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 45 [2024-09-15 19:38:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:38:46,132 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2024-09-15 19:38:46,132 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-15 19:38:46,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2024-09-15 19:38:46,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-15 19:38:46,134 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:38:46,134 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:38:46,146 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-15 19:38:46,334 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 [2024-09-15 19:38:46,335 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:38:46,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:46,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1692331952, now seen corresponding path program 2 times [2024-09-15 19:38:46,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:38:46,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992903775] [2024-09-15 19:38:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:46,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:38:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:46,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:38:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:46,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:38:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:46,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:38:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:46,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 19:38:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:46,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:38:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:46,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 19:38:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:46,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 19:38:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:46,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 19:38:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-15 19:38:46,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:38:46,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992903775] [2024-09-15 19:38:46,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992903775] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:38:46,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63824762] [2024-09-15 19:38:46,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:38:46,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:38:46,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:38:46,922 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) [2024-09-15 19:38:46,923 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 19:38:46,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:38:46,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:38:46,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-15 19:38:46,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:38:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-15 19:38:47,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:38:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-15 19:38:47,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63824762] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:38:47,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:38:47,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 24 [2024-09-15 19:38:47,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340478037] [2024-09-15 19:38:47,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:38:47,497 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-15 19:38:47,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:38:47,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-15 19:38:47,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2024-09-15 19:38:47,498 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 22 states have internal predecessors, (57), 13 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-09-15 19:38:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:38:47,916 INFO L93 Difference]: Finished difference Result 141 states and 167 transitions. [2024-09-15 19:38:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-15 19:38:47,917 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 22 states have internal predecessors, (57), 13 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) Word has length 63 [2024-09-15 19:38:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:38:47,918 INFO L225 Difference]: With dead ends: 141 [2024-09-15 19:38:47,918 INFO L226 Difference]: Without dead ends: 67 [2024-09-15 19:38:47,919 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=444, Invalid=1278, Unknown=0, NotChecked=0, Total=1722 [2024-09-15 19:38:47,919 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 24 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:38:47,920 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 298 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:38:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-15 19:38:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-09-15 19:38:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 49 states have internal predecessors, (49), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 19:38:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2024-09-15 19:38:47,947 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 63 [2024-09-15 19:38:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:38:47,950 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2024-09-15 19:38:47,950 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 22 states have internal predecessors, (57), 13 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-09-15 19:38:47,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:47,950 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2024-09-15 19:38:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-15 19:38:47,951 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:38:47,951 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:38:47,964 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-15 19:38:48,151 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 [2024-09-15 19:38:48,152 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:38:48,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash 358652046, now seen corresponding path program 3 times [2024-09-15 19:38:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:38:48,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130162537] [2024-09-15 19:38:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:48,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:38:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:48,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:38:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:48,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:38:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:48,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:38:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:48,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 19:38:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:48,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:38:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:48,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 19:38:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:48,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 19:38:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:48,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 19:38:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-15 19:38:48,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:38:48,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130162537] [2024-09-15 19:38:48,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130162537] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:38:48,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008365838] [2024-09-15 19:38:48,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 19:38:48,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:38:48,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:38:48,624 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) [2024-09-15 19:38:48,626 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 19:38:48,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-15 19:38:48,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:38:48,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-15 19:38:48,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:38:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-15 19:38:49,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:38:51,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008365838] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:38:51,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:38:51,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2024-09-15 19:38:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852319096] [2024-09-15 19:38:51,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:38:51,228 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 19:38:51,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:38:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 19:38:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2024-09-15 19:38:51,228 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 23 states have internal predecessors, (55), 11 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-15 19:38:51,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:38:51,976 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2024-09-15 19:38:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-15 19:38:51,976 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 23 states have internal predecessors, (55), 11 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 63 [2024-09-15 19:38:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:38:51,977 INFO L225 Difference]: With dead ends: 77 [2024-09-15 19:38:51,977 INFO L226 Difference]: Without dead ends: 50 [2024-09-15 19:38:51,977 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=282, Invalid=1788, Unknown=0, NotChecked=0, Total=2070 [2024-09-15 19:38:51,978 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 19:38:51,978 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 330 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 19:38:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-15 19:38:51,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-15 19:38:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 19:38:51,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-09-15 19:38:51,988 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 63 [2024-09-15 19:38:51,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:38:51,989 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-09-15 19:38:51,989 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 23 states have internal predecessors, (55), 11 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-15 19:38:51,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:51,990 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-09-15 19:38:51,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-15 19:38:51,991 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:38:51,991 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:38:52,004 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-15 19:38:52,191 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 [2024-09-15 19:38:52,191 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:38:52,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:52,192 INFO L85 PathProgramCache]: Analyzing trace with hash 499200656, now seen corresponding path program 2 times [2024-09-15 19:38:52,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:38:52,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396875807] [2024-09-15 19:38:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:38:52,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:38:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:52,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:38:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:52,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:38:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:52,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 19:38:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:52,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 19:38:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:52,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:38:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:52,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 19:38:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:52,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-15 19:38:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:52,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-15 19:38:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:38:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-15 19:38:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:38:52,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396875807] [2024-09-15 19:38:52,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396875807] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:38:52,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935927633] [2024-09-15 19:38:52,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:38:52,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:38:52,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:38:52,602 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) [2024-09-15 19:38:52,603 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-15 19:38:52,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:38:52,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:38:52,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-15 19:38:52,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:38:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-15 19:38:52,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:38:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-15 19:38:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935927633] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:38:53,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:38:53,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2024-09-15 19:38:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730987234] [2024-09-15 19:38:53,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:38:53,338 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-15 19:38:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:38:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-15 19:38:53,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2024-09-15 19:38:53,339 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 30 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 17 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 17 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-15 19:38:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:38:53,512 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-09-15 19:38:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-15 19:38:53,512 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 17 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 17 states have call predecessors, (20), 16 states have call successors, (20) Word has length 63 [2024-09-15 19:38:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:38:53,513 INFO L225 Difference]: With dead ends: 52 [2024-09-15 19:38:53,513 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 19:38:53,513 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2024-09-15 19:38:53,514 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:38:53,514 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 246 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:38:53,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 19:38:53,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 19:38:53,514 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) [2024-09-15 19:38:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 19:38:53,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2024-09-15 19:38:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:38:53,514 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 19:38:53,515 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 17 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 17 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-15 19:38:53,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:38:53,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 19:38:53,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 19:38:53,517 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-15 19:38:53,523 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-15 19:38:53,718 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 [2024-09-15 19:38:53,721 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2024-09-15 19:38:53,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-15 19:38:57,594 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 19:38:57,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:38:57 BoogieIcfgContainer [2024-09-15 19:38:57,614 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 19:38:57,614 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-15 19:38:57,614 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-15 19:38:57,614 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-15 19:38:57,614 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:38:26" (3/4) ... [2024-09-15 19:38:57,616 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-15 19:38:57,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-15 19:38:57,621 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-15 19:38:57,621 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-15 19:38:57,621 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-15 19:38:57,625 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-09-15 19:38:57,625 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-09-15 19:38:57,625 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-15 19:38:57,625 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-15 19:38:57,700 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-15 19:38:57,700 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-15 19:38:57,700 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-15 19:38:57,701 INFO L158 Benchmark]: Toolchain (without parser) took 31443.44ms. Allocated memory was 62.9MB in the beginning and 136.3MB in the end (delta: 73.4MB). Free memory was 39.6MB in the beginning and 111.9MB in the end (delta: -72.3MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. [2024-09-15 19:38:57,701 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:38:57,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.47ms. Allocated memory is still 62.9MB. Free memory was 39.4MB in the beginning and 28.0MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-15 19:38:57,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.87ms. Allocated memory is still 62.9MB. Free memory was 27.8MB in the beginning and 26.9MB in the end (delta: 903.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:38:57,702 INFO L158 Benchmark]: Boogie Preprocessor took 38.99ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 26.9MB in the beginning and 57.8MB in the end (delta: -30.9MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2024-09-15 19:38:57,702 INFO L158 Benchmark]: RCFGBuilder took 270.87ms. Allocated memory is still 77.6MB. Free memory was 57.8MB in the beginning and 45.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 19:38:57,702 INFO L158 Benchmark]: TraceAbstraction took 30826.30ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 44.9MB in the beginning and 36.6MB in the end (delta: 8.3MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2024-09-15 19:38:57,703 INFO L158 Benchmark]: Witness Printer took 86.41ms. Allocated memory is still 136.3MB. Free memory was 36.6MB in the beginning and 111.9MB in the end (delta: -75.3MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-09-15 19:38:57,704 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.47ms. Allocated memory is still 62.9MB. Free memory was 39.4MB in the beginning and 28.0MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.87ms. Allocated memory is still 62.9MB. Free memory was 27.8MB in the beginning and 26.9MB in the end (delta: 903.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.99ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 26.9MB in the beginning and 57.8MB in the end (delta: -30.9MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * RCFGBuilder took 270.87ms. Allocated memory is still 77.6MB. Free memory was 57.8MB in the beginning and 45.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 30826.30ms. Allocated memory was 77.6MB in the beginning and 136.3MB in the end (delta: 58.7MB). Free memory was 44.9MB in the beginning and 36.6MB in the end (delta: 8.3MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. * Witness Printer took 86.41ms. Allocated memory is still 136.3MB. Free memory was 36.6MB in the beginning and 111.9MB in the end (delta: -75.3MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * 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: 15]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 26.9s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131 mSDsluCounter, 1625 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1387 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1480 IncrementalHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 238 mSDtfsCounter, 1480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 870 GetRequests, 648 SyntacticMatches, 23 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=7, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 24 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 810 NumberOfCodeBlocks, 801 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 916 ConstructedInterpolants, 8 QuantifiedInterpolants, 5036 SizeOfPredicates, 12 NumberOfNonLiveVariables, 897 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 722/874 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: 34]: Loop Invariant Derived loop invariant: ((((((((((((((z == 0) && (y == (b / 2))) && (((long long) a * 2) == x)) && (0 <= a)) && ((b % 2) != 1)) && (1 <= y)) && (a <= 10)) && (y <= 5)) || ((((((((1 <= (b % 2)) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (((long long) a * 2) == x)) && (0 <= a)) && (1 <= b)) && (b <= 10)) && (a <= 10)) && ((((long long) -1 + b) / 2) == y))) || ((((((((z == 0) && (((__int128) y * x) == ((long long) b * a))) && (y <= 2)) && (0 <= a)) && (1 <= b)) && (1 <= y)) && (b <= 10)) && (a <= 10))) || (((((((z == 0) && (b == y)) && (0 <= a)) && (1 <= y)) && (b <= 10)) && (a == x)) && (a <= 10))) || (((((((0 <= y) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (0 <= a)) && (1 <= b)) && (b <= 10)) && (a <= 10)) && (y <= 1))) || ((((((((0 <= y) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (y <= 2)) && (0 <= a)) && (x == ((__int128) z * 2))) && (1 <= b)) && (b <= 10)) && (a <= 10))) || (((((((((a == z) && (1 <= (b % 2))) && (((long long) a * 4) == x)) && (0 <= a)) && (0 <= b)) && (((((long long) -1 + b) / 2) % 2) != 1)) && ((((long long) -1 + b) / 4) == y)) && (b <= 10)) && (a <= 10))) - ProcedureContractResult [Line: 9]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-15 19:38:57,746 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE