./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/cohencu-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/cohencu-ll.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 14:32:44,792 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 14:32:44,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 14:32:44,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 14:32:44,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 14:32:44,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 14:32:44,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 14:32:44,875 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 14:32:44,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 14:32:44,876 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 14:32:44,876 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 14:32:44,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 14:32:44,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 14:32:44,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 14:32:44,879 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 14:32:44,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 14:32:44,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 14:32:44,880 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 14:32:44,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 14:32:44,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 14:32:44,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 14:32:44,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 14:32:44,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 14:32:44,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 14:32:44,882 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 14:32:44,882 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 14:32:44,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 14:32:44,883 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 14:32:44,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 14:32:44,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 14:32:44,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 14:32:44,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 14:32:44,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:32:44,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 14:32:44,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 14:32:44,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 14:32:44,885 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 14:32:44,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 14:32:44,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 14:32:44,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 14:32:44,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 14:32:44,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 14:32:44,886 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 14:32:45,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 14:32:45,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 14:32:45,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 14:32:45,135 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 14:32:45,135 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 14:32:45,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2024-10-15 14:32:46,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 14:32:46,607 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 14:32:46,608 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2024-10-15 14:32:46,613 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/bbc2552e9/72cd63c903384f3aba1014536a2d7ce9/FLAGafbe68a9b [2024-10-15 14:32:47,026 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/bbc2552e9/72cd63c903384f3aba1014536a2d7ce9 [2024-10-15 14:32:47,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 14:32:47,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 14:32:47,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 14:32:47,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 14:32:47,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 14:32:47,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee0e32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47, skipping insertion in model container [2024-10-15 14:32:47,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,051 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 14:32:47,179 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/cohencu-ll.c[588,601] [2024-10-15 14:32:47,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:32:47,213 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 14:32:47,223 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/cohencu-ll.c[588,601] [2024-10-15 14:32:47,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:32:47,249 INFO L204 MainTranslator]: Completed translation [2024-10-15 14:32:47,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47 WrapperNode [2024-10-15 14:32:47,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 14:32:47,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 14:32:47,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 14:32:47,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 14:32:47,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,264 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 14:32:47,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 14:32:47,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 14:32:47,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 14:32:47,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 14:32:47,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,276 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,283 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-15 14:32:47,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 14:32:47,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 14:32:47,297 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 14:32:47,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 14:32:47,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (1/1) ... [2024-10-15 14:32:47,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:32:47,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:47,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 14:32:47,337 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 14:32:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 14:32:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 14:32:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 14:32:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 14:32:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 14:32:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 14:32:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 14:32:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 14:32:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 14:32:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 14:32:47,411 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 14:32:47,412 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 14:32:47,551 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-10-15 14:32:47,552 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 14:32:47,576 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 14:32:47,576 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 14:32:47,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:32:47 BoogieIcfgContainer [2024-10-15 14:32:47,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 14:32:47,582 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 14:32:47,582 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 14:32:47,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 14:32:47,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:32:47" (1/3) ... [2024-10-15 14:32:47,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47297ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:32:47, skipping insertion in model container [2024-10-15 14:32:47,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:47" (2/3) ... [2024-10-15 14:32:47,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47297ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:32:47, skipping insertion in model container [2024-10-15 14:32:47,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:32:47" (3/3) ... [2024-10-15 14:32:47,593 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2024-10-15 14:32:47,617 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 14:32:47,618 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 14:32:47,694 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 14:32:47,706 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3c266b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 14:32:47,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 14:32:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:32:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-15 14:32:47,723 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:47,724 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:47,724 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:47,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1514194138, now seen corresponding path program 1 times [2024-10-15 14:32:47,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:47,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022944812] [2024-10-15 14:32:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:47,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:32:47,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:47,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022944812] [2024-10-15 14:32:47,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022944812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:32:47,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:32:47,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 14:32:47,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973979808] [2024-10-15 14:32:47,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:32:47,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-15 14:32:47,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:47,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-15 14:32:47,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 14:32:47,889 INFO L87 Difference]: Start difference. First operand has 28 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:32:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:47,917 INFO L93 Difference]: Finished difference Result 51 states and 88 transitions. [2024-10-15 14:32:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 14:32:47,919 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-10-15 14:32:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:47,924 INFO L225 Difference]: With dead ends: 51 [2024-10-15 14:32:47,925 INFO L226 Difference]: Without dead ends: 24 [2024-10-15 14:32:47,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 14:32:47,929 INFO L432 NwaCegarLoop]: 36 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, 36 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 [2024-10-15 14:32:47,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:32:47,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-15 14:32:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-15 14:32:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-15 14:32:47,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2024-10-15 14:32:47,956 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2024-10-15 14:32:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:47,956 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2024-10-15 14:32:47,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:32:47,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:47,957 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2024-10-15 14:32:47,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-15 14:32:47,957 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:47,957 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:47,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 14:32:47,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:47,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1502813976, now seen corresponding path program 1 times [2024-10-15 14:32:47,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:47,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342009864] [2024-10-15 14:32:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:47,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:48,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:32:48,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:48,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342009864] [2024-10-15 14:32:48,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342009864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:32:48,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:32:48,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:32:48,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893593468] [2024-10-15 14:32:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:32:48,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:32:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:32:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:32:48,167 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:32:48,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:48,265 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-10-15 14:32:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:32:48,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-10-15 14:32:48,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:48,267 INFO L225 Difference]: With dead ends: 30 [2024-10-15 14:32:48,267 INFO L226 Difference]: Without dead ends: 28 [2024-10-15 14:32:48,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:32:48,268 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:48,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:48,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-15 14:32:48,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-10-15 14:32:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-15 14:32:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-10-15 14:32:48,277 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2024-10-15 14:32:48,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:48,278 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-10-15 14:32:48,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:32:48,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:48,278 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-10-15 14:32:48,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-15 14:32:48,279 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:48,279 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:48,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 14:32:48,279 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:48,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash -847684307, now seen corresponding path program 1 times [2024-10-15 14:32:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:48,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813033297] [2024-10-15 14:32:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:48,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:32:48,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916048318] [2024-10-15 14:32:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:48,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:48,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:48,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:48,295 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 14:32:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:48,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 14:32:48,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:32:48,379 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:32:48,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:48,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813033297] [2024-10-15 14:32:48,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:32:48,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916048318] [2024-10-15 14:32:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916048318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:32:48,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:32:48,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:32:48,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424585402] [2024-10-15 14:32:48,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:32:48,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:32:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:48,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:32:48,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:32:48,381 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 14:32:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:48,433 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2024-10-15 14:32:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:32:48,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-10-15 14:32:48,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:48,434 INFO L225 Difference]: With dead ends: 47 [2024-10-15 14:32:48,434 INFO L226 Difference]: Without dead ends: 45 [2024-10-15 14:32:48,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:32:48,439 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:48,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 108 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:32:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-15 14:32:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2024-10-15 14:32:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:32:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2024-10-15 14:32:48,452 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 15 [2024-10-15 14:32:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:48,453 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2024-10-15 14:32:48,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 14:32:48,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2024-10-15 14:32:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-15 14:32:48,454 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:48,454 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:48,467 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:48,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:48,655 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:48,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:48,656 INFO L85 PathProgramCache]: Analyzing trace with hash -910377992, now seen corresponding path program 1 times [2024-10-15 14:32:48,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:48,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077858151] [2024-10-15 14:32:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:48,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:32:48,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067678671] [2024-10-15 14:32:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:48,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:48,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:48,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:48,677 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 14:32:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:48,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 14:32:48,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:32:48,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:32:48,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077858151] [2024-10-15 14:32:48,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:32:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067678671] [2024-10-15 14:32:48,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067678671] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:32:48,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:32:48,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:32:48,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758578329] [2024-10-15 14:32:48,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:32:48,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:32:48,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:32:48,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:32:48,787 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 14:32:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:48,888 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2024-10-15 14:32:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:32:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-10-15 14:32:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:48,890 INFO L225 Difference]: With dead ends: 51 [2024-10-15 14:32:48,890 INFO L226 Difference]: Without dead ends: 49 [2024-10-15 14:32:48,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:32:48,891 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:48,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 105 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-15 14:32:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-10-15 14:32:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-15 14:32:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2024-10-15 14:32:48,901 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 20 [2024-10-15 14:32:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:48,901 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2024-10-15 14:32:48,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 14:32:48,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2024-10-15 14:32:48,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-15 14:32:48,902 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:48,902 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:48,918 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 14:32:49,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:49,108 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:49,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:49,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1050084403, now seen corresponding path program 1 times [2024-10-15 14:32:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:49,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904789300] [2024-10-15 14:32:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:49,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:32:49,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780492285] [2024-10-15 14:32:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:49,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:49,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:49,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:49,138 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 14:32:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:49,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 14:32:49,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:32:49,263 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:32:49,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:49,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904789300] [2024-10-15 14:32:49,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:32:49,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780492285] [2024-10-15 14:32:49,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780492285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:32:49,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:32:49,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:32:49,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643759808] [2024-10-15 14:32:49,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:32:49,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:32:49,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:49,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:32:49,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:32:49,266 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-15 14:32:49,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:49,361 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-10-15 14:32:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:32:49,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2024-10-15 14:32:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:49,363 INFO L225 Difference]: With dead ends: 59 [2024-10-15 14:32:49,364 INFO L226 Difference]: Without dead ends: 47 [2024-10-15 14:32:49,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:32:49,366 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:49,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 97 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:49,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-15 14:32:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-15 14:32:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-15 14:32:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2024-10-15 14:32:49,384 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 25 [2024-10-15 14:32:49,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:49,386 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2024-10-15 14:32:49,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-15 14:32:49,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:49,387 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2024-10-15 14:32:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-15 14:32:49,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:49,388 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:49,408 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 14:32:49,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:49,593 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:49,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:49,594 INFO L85 PathProgramCache]: Analyzing trace with hash -917134408, now seen corresponding path program 1 times [2024-10-15 14:32:49,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:49,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615178019] [2024-10-15 14:32:49,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:49,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:32:49,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518619441] [2024-10-15 14:32:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:49,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:49,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:49,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:49,636 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 14:32:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:49,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-15 14:32:49,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-15 14:32:49,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-15 14:32:49,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615178019] [2024-10-15 14:32:49,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:32:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518619441] [2024-10-15 14:32:49,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518619441] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:49,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:32:49,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-10-15 14:32:49,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777159604] [2024-10-15 14:32:49,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:49,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 14:32:49,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 14:32:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:32:49,946 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2024-10-15 14:32:50,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:50,122 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2024-10-15 14:32:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:32:50,123 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 42 [2024-10-15 14:32:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:50,124 INFO L225 Difference]: With dead ends: 70 [2024-10-15 14:32:50,124 INFO L226 Difference]: Without dead ends: 68 [2024-10-15 14:32:50,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:32:50,125 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:50,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 174 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:50,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-15 14:32:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2024-10-15 14:32:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-15 14:32:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-10-15 14:32:50,139 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 42 [2024-10-15 14:32:50,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:50,139 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-10-15 14:32:50,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2024-10-15 14:32:50,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-10-15 14:32:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-15 14:32:50,140 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:50,140 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:50,153 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 14:32:50,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:50,341 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:50,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:50,342 INFO L85 PathProgramCache]: Analyzing trace with hash 936236109, now seen corresponding path program 2 times [2024-10-15 14:32:50,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:50,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272106960] [2024-10-15 14:32:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:50,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:32:50,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111489925] [2024-10-15 14:32:50,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:32:50,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:50,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:50,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:50,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 14:32:50,417 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:32:50,417 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:32:50,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-15 14:32:50,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-15 14:32:50,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-15 14:32:50,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:50,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272106960] [2024-10-15 14:32:50,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:32:50,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111489925] [2024-10-15 14:32:50,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111489925] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:50,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:32:50,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-10-15 14:32:50,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682351659] [2024-10-15 14:32:50,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:50,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 14:32:50,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 14:32:50,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:32:50,635 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2024-10-15 14:32:54,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-10-15 14:32:54,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:54,587 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2024-10-15 14:32:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 14:32:54,587 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 47 [2024-10-15 14:32:54,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:54,589 INFO L225 Difference]: With dead ends: 82 [2024-10-15 14:32:54,590 INFO L226 Difference]: Without dead ends: 80 [2024-10-15 14:32:54,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:32:54,591 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:54,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 102 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-10-15 14:32:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-15 14:32:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-10-15 14:32:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 41 states have internal predecessors, (42), 27 states have call successors, (27), 12 states have call predecessors, (27), 11 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-15 14:32:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2024-10-15 14:32:54,629 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 47 [2024-10-15 14:32:54,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:54,629 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2024-10-15 14:32:54,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2024-10-15 14:32:54,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2024-10-15 14:32:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-15 14:32:54,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:54,631 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:54,646 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 14:32:54,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 14:32:54,832 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:54,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:54,833 INFO L85 PathProgramCache]: Analyzing trace with hash -78458728, now seen corresponding path program 3 times [2024-10-15 14:32:54,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:54,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284415167] [2024-10-15 14:32:54,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:54,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:32:54,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318997557] [2024-10-15 14:32:54,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:32:54,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:54,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:54,854 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:54,854 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 14:32:54,891 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-15 14:32:54,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:32:54,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 14:32:54,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:32:54,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:55,082 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:32:55,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:55,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284415167] [2024-10-15 14:32:55,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:32:55,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318997557] [2024-10-15 14:32:55,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318997557] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:55,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:32:55,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-15 14:32:55,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161035123] [2024-10-15 14:32:55,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:55,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 14:32:55,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:55,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 14:32:55,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-15 14:32:55,084 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-10-15 14:32:55,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:55,281 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2024-10-15 14:32:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 14:32:55,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 52 [2024-10-15 14:32:55,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:55,282 INFO L225 Difference]: With dead ends: 90 [2024-10-15 14:32:55,282 INFO L226 Difference]: Without dead ends: 78 [2024-10-15 14:32:55,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-15 14:32:55,283 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:55,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 167 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-15 14:32:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2024-10-15 14:32:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 15 states have call successors, (15), 13 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:32:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2024-10-15 14:32:55,303 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 52 [2024-10-15 14:32:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:55,303 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2024-10-15 14:32:55,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-10-15 14:32:55,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2024-10-15 14:32:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-15 14:32:55,305 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:55,305 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:55,318 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 14:32:55,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:55,510 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:55,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:55,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1670205643, now seen corresponding path program 1 times [2024-10-15 14:32:55,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:55,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459778084] [2024-10-15 14:32:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:55,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:32:55,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945217622] [2024-10-15 14:32:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:55,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:55,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:55,539 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:55,540 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 14:32:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:55,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-15 14:32:55,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 21 proven. 38 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-10-15 14:32:55,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 23 proven. 36 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-10-15 14:32:56,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:56,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459778084] [2024-10-15 14:32:56,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:32:56,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945217622] [2024-10-15 14:32:56,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945217622] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:56,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:32:56,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-10-15 14:32:56,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190709496] [2024-10-15 14:32:56,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:56,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 14:32:56,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 14:32:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:32:56,111 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2024-10-15 14:32:56,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:56,356 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2024-10-15 14:32:56,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-15 14:32:56,357 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 68 [2024-10-15 14:32:56,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:56,359 INFO L225 Difference]: With dead ends: 98 [2024-10-15 14:32:56,359 INFO L226 Difference]: Without dead ends: 94 [2024-10-15 14:32:56,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-10-15 14:32:56,360 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:56,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 116 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-10-15 14:32:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 70. [2024-10-15 14:32:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:32:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2024-10-15 14:32:56,376 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 68 [2024-10-15 14:32:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:56,376 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2024-10-15 14:32:56,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2024-10-15 14:32:56,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2024-10-15 14:32:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-15 14:32:56,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:56,378 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:56,392 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:56,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:56,583 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:56,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1778312624, now seen corresponding path program 1 times [2024-10-15 14:32:56,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:56,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401248792] [2024-10-15 14:32:56,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:56,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:32:56,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31701284] [2024-10-15 14:32:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:56,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:56,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:56,602 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) [2024-10-15 14:32:56,603 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 14:32:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:56,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-15 14:32:56,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-15 14:32:56,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-10-15 14:32:57,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:57,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401248792] [2024-10-15 14:32:57,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:32:57,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31701284] [2024-10-15 14:32:57,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31701284] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:57,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:32:57,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-10-15 14:32:57,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315603419] [2024-10-15 14:32:57,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:57,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 14:32:57,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:57,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 14:32:57,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-15 14:32:57,072 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2024-10-15 14:32:57,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:57,411 INFO L93 Difference]: Finished difference Result 117 states and 135 transitions. [2024-10-15 14:32:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 14:32:57,412 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 73 [2024-10-15 14:32:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:57,413 INFO L225 Difference]: With dead ends: 117 [2024-10-15 14:32:57,413 INFO L226 Difference]: Without dead ends: 103 [2024-10-15 14:32:57,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:32:57,414 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:57,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 110 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:57,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-15 14:32:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-10-15 14:32:57,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 30 states have call successors, (30), 17 states have call predecessors, (30), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-15 14:32:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2024-10-15 14:32:57,450 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 73 [2024-10-15 14:32:57,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:57,450 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2024-10-15 14:32:57,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2024-10-15 14:32:57,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:57,450 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2024-10-15 14:32:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-10-15 14:32:57,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:57,452 INFO L215 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:57,464 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 14:32:57,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:57,656 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:57,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:57,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1904053083, now seen corresponding path program 2 times [2024-10-15 14:32:57,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:57,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069317342] [2024-10-15 14:32:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:57,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:32:57,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553301555] [2024-10-15 14:32:57,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:32:57,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:57,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:57,696 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:57,698 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 14:32:57,763 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:32:57,763 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:32:57,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-15 14:32:57,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 89 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-10-15 14:32:58,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 47 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2024-10-15 14:32:58,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:58,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069317342] [2024-10-15 14:32:58,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:32:58,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553301555] [2024-10-15 14:32:58,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553301555] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:58,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:32:58,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2024-10-15 14:32:58,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469300935] [2024-10-15 14:32:58,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:58,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 14:32:58,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:58,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 14:32:58,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-15 14:32:58,827 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2024-10-15 14:32:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:59,412 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2024-10-15 14:32:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 14:32:59,412 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) Word has length 154 [2024-10-15 14:32:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:59,413 INFO L225 Difference]: With dead ends: 131 [2024-10-15 14:32:59,413 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 14:32:59,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 287 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2024-10-15 14:32:59,414 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:59,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 252 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:32:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 14:32:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 14:32:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 14:32:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 14:32:59,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2024-10-15 14:32:59,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:59,416 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 14:32:59,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2024-10-15 14:32:59,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 14:32:59,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 14:32:59,418 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 14:32:59,441 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:59,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 14:32:59,639 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:59,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 14:33:04,200 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 14:33:04,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:33:04 BoogieIcfgContainer [2024-10-15 14:33:04,222 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 14:33:04,222 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 14:33:04,222 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 14:33:04,223 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 14:33:04,223 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:32:47" (3/4) ... [2024-10-15 14:33:04,224 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 14:33:04,290 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 14:33:04,291 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 14:33:04,291 INFO L158 Benchmark]: Toolchain (without parser) took 17262.36ms. Allocated memory was 192.9MB in the beginning and 304.1MB in the end (delta: 111.1MB). Free memory was 120.7MB in the beginning and 247.3MB in the end (delta: -126.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:33:04,291 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:33:04,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.35ms. Allocated memory is still 192.9MB. Free memory was 120.4MB in the beginning and 107.6MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 14:33:04,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.15ms. Allocated memory is still 192.9MB. Free memory was 107.6MB in the beginning and 106.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 14:33:04,292 INFO L158 Benchmark]: Boogie Preprocessor took 31.30ms. Allocated memory is still 192.9MB. Free memory was 106.6MB in the beginning and 105.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 14:33:04,292 INFO L158 Benchmark]: RCFGBuilder took 279.46ms. Allocated memory is still 192.9MB. Free memory was 104.7MB in the beginning and 91.4MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 14:33:04,292 INFO L158 Benchmark]: TraceAbstraction took 16639.87ms. Allocated memory was 192.9MB in the beginning and 304.1MB in the end (delta: 111.1MB). Free memory was 90.6MB in the beginning and 249.4MB in the end (delta: -158.8MB). Peak memory consumption was 109.0MB. Max. memory is 16.1GB. [2024-10-15 14:33:04,293 INFO L158 Benchmark]: Witness Printer took 68.47ms. Allocated memory is still 304.1MB. Free memory was 249.4MB in the beginning and 247.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 14:33:04,294 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.35ms. Allocated memory is still 192.9MB. Free memory was 120.4MB in the beginning and 107.6MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.15ms. Allocated memory is still 192.9MB. Free memory was 107.6MB in the beginning and 106.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.30ms. Allocated memory is still 192.9MB. Free memory was 106.6MB in the beginning and 105.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 279.46ms. Allocated memory is still 192.9MB. Free memory was 104.7MB in the beginning and 91.4MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16639.87ms. Allocated memory was 192.9MB in the beginning and 304.1MB in the end (delta: 111.1MB). Free memory was 90.6MB in the beginning and 249.4MB in the end (delta: -158.8MB). Peak memory consumption was 109.0MB. Max. memory is 16.1GB. * Witness Printer took 68.47ms. Allocated memory is still 304.1MB. Free memory was 249.4MB in the beginning and 247.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 17]: 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 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.0s, OverallIterations: 11, TraceHistogramMax: 28, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 1354 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1037 mSDsCounter, 250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1201 IncrementalHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 250 mSolverCounterUnsat, 317 mSDtfsCounter, 1201 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 964 GetRequests, 848 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=10, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 63 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1012 NumberOfCodeBlocks, 982 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 935 ConstructedInterpolants, 0 QuantifiedInterpolants, 4147 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1164 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 4408/4792 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: 32]: Loop Invariant Derived loop invariant: ((((((((3 * ((__int128) n * n)) + (((__int128) n * n) * n)) + ((__int128) n * 3)) + 1) == ((__int128) y + x)) && ((((__int128) n * 6) + 6) == z)) && ((((__int128) n * n) * n) == x)) && ((n < (a + 1)) || (((__int128) z * x) == (((__int128) x * 12) + (((__int128) a * x) * 6))))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-10-15 14:33:04,311 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