./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/ps5-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 ca4ee3dd Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/ps5-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 1d0411df2a3b388d2db53c57aaa1f7219c19c9d74992ef1ed00eab4b9b56cbed --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 19:05:48,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:05:48,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:05:48,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:05:48,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:05:48,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:05:48,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:05:48,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:05:48,357 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:05:48,358 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:05:48,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:05:48,358 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:05:48,359 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:05:48,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:05:48,359 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:05:48,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:05:48,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:05:48,360 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:05:48,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:05:48,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:05:48,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:05:48,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:05:48,365 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:05:48,365 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:05:48,365 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:05:48,365 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:05:48,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:05:48,366 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:05:48,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:05:48,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:05:48,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:05:48,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:05:48,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:05:48,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:05:48,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:05:48,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:05:48,367 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:05:48,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:05:48,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:05:48,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:05:48,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:05:48,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:05:48,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d0411df2a3b388d2db53c57aaa1f7219c19c9d74992ef1ed00eab4b9b56cbed Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:05:48,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:05:48,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:05:48,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:05:48,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:05:48,605 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:05:48,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/ps5-ll.c [2024-09-20 19:05:49,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:05:50,009 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:05:50,010 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/ps5-ll.c [2024-09-20 19:05:50,016 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/37561f1fe/9389ae6cee784ad49b882ee08cf55036/FLAGc6827979e [2024-09-20 19:05:50,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/37561f1fe/9389ae6cee784ad49b882ee08cf55036 [2024-09-20 19:05:50,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:05:50,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:05:50,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:05:50,032 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:05:50,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:05:50,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ddf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50, skipping insertion in model container [2024-09-20 19:05:50,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:05:50,171 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/ps5-ll.c[458,471] [2024-09-20 19:05:50,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:05:50,197 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:05:50,206 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/ps5-ll.c[458,471] [2024-09-20 19:05:50,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:05:50,225 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:05:50,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50 WrapperNode [2024-09-20 19:05:50,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:05:50,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:05:50,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:05:50,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:05:50,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,242 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:05:50,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:05:50,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:05:50,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:05:50,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:05:50,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,280 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 19:05:50,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:05:50,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:05:50,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:05:50,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:05:50,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (1/1) ... [2024-09-20 19:05:50,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:05:50,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:05:50,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 19:05:50,323 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 19:05:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:05:50,366 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 19:05:50,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 19:05:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:05:50,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:05:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:05:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:05:50,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:05:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:05:50,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:05:50,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:05:50,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:05:50,422 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:05:50,424 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:05:50,574 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-20 19:05:50,575 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:05:50,592 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:05:50,592 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 19:05:50,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:05:50 BoogieIcfgContainer [2024-09-20 19:05:50,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:05:50,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:05:50,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:05:50,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:05:50,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:05:50" (1/3) ... [2024-09-20 19:05:50,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6774cf06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:05:50, skipping insertion in model container [2024-09-20 19:05:50,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:50" (2/3) ... [2024-09-20 19:05:50,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6774cf06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:05:50, skipping insertion in model container [2024-09-20 19:05:50,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:05:50" (3/3) ... [2024-09-20 19:05:50,599 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll.c [2024-09-20 19:05:50,613 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:05:50,613 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:05:50,655 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:05:50,661 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@655b4c49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:05:50,661 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:05:50,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 19:05:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 19:05:50,677 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:05:50,677 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:05:50,678 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:05:50,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1238311395, now seen corresponding path program 1 times [2024-09-20 19:05:50,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:05:50,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050329321] [2024-09-20 19:05:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:50,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:05:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:50,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:05:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:50,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:05:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:05:50,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:05:50,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050329321] [2024-09-20 19:05:50,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050329321] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:05:50,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:05:50,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 19:05:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922763715] [2024-09-20 19:05:50,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:05:50,837 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 19:05:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:05:50,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 19:05:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:05:50,856 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:05:50,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:05:50,883 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-09-20 19:05:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 19:05:50,887 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 19:05:50,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:05:50,893 INFO L225 Difference]: With dead ends: 44 [2024-09-20 19:05:50,893 INFO L226 Difference]: Without dead ends: 22 [2024-09-20 19:05:50,897 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:05:50,899 INFO L434 NwaCegarLoop]: 26 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, 26 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:05:50,900 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:05:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-20 19:05:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-20 19:05:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 19:05:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-09-20 19:05:50,928 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2024-09-20 19:05:50,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:05:50,928 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-09-20 19:05:50,929 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:05:50,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:50,929 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-09-20 19:05:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 19:05:50,930 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:05:50,930 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:05:50,930 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:05:50,931 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:05:50,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:50,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1910922015, now seen corresponding path program 1 times [2024-09-20 19:05:50,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:05:50,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464092286] [2024-09-20 19:05:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:50,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:05:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:05:50,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264445020] [2024-09-20 19:05:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:50,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:50,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:05:50,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:05:50,965 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 19:05:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:51,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 19:05:51,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:05:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:05:51,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:05:51,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:05:51,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464092286] [2024-09-20 19:05:51,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:05:51,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264445020] [2024-09-20 19:05:51,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264445020] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:05:51,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:05:51,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:05:51,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216485873] [2024-09-20 19:05:51,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:05:51,123 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:05:51,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:05:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:05:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:05:51,124 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:05:51,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:05:51,209 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-09-20 19:05:51,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:05:51,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 19:05:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:05:51,211 INFO L225 Difference]: With dead ends: 33 [2024-09-20 19:05:51,211 INFO L226 Difference]: Without dead ends: 29 [2024-09-20 19:05:51,212 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:05:51,213 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:05:51,213 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:05:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-20 19:05:51,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-20 19:05:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 19:05:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-09-20 19:05:51,227 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16 [2024-09-20 19:05:51,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:05:51,228 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-09-20 19:05:51,228 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:05:51,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-09-20 19:05:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-20 19:05:51,229 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:05:51,229 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:05:51,242 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 19:05:51,429 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:51,430 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:05:51,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:51,430 INFO L85 PathProgramCache]: Analyzing trace with hash 306700420, now seen corresponding path program 1 times [2024-09-20 19:05:51,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:05:51,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104521628] [2024-09-20 19:05:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:05:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:05:51,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594435515] [2024-09-20 19:05:51,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:51,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:51,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:05:51,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:05:51,459 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 19:05:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:51,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 19:05:51,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:05:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:05:51,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:05:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-20 19:05:51,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:05:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104521628] [2024-09-20 19:05:51,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:05:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594435515] [2024-09-20 19:05:51,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594435515] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 19:05:51,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:05:51,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-20 19:05:51,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614024419] [2024-09-20 19:05:51,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:05:51,663 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:05:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:05:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:05:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:05:51,665 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-09-20 19:05:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:05:51,715 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-09-20 19:05:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:05:51,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 23 [2024-09-20 19:05:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:05:51,716 INFO L225 Difference]: With dead ends: 35 [2024-09-20 19:05:51,716 INFO L226 Difference]: Without dead ends: 31 [2024-09-20 19:05:51,717 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 19:05:51,717 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:05:51,718 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:05:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-20 19:05:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-20 19:05:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 19:05:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-20 19:05:51,728 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 23 [2024-09-20 19:05:51,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:05:51,728 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-20 19:05:51,728 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-09-20 19:05:51,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:51,729 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-20 19:05:51,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-20 19:05:51,729 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:05:51,729 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:05:51,742 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 19:05:51,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:51,934 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:05:51,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:51,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1375311536, now seen corresponding path program 1 times [2024-09-20 19:05:51,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:05:51,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828572065] [2024-09-20 19:05:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:51,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:05:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:05:51,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211747135] [2024-09-20 19:05:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:51,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:51,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:05:51,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:05:51,970 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 19:05:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:52,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 19:05:52,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:05:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:05:52,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:05:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:05:52,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:05:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828572065] [2024-09-20 19:05:52,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:05:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211747135] [2024-09-20 19:05:52,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211747135] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:05:52,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:05:52,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-20 19:05:52,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422458852] [2024-09-20 19:05:52,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:05:52,217 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 19:05:52,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:05:52,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 19:05:52,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-20 19:05:52,218 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-20 19:05:52,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:05:52,341 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-09-20 19:05:52,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 19:05:52,342 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 34 [2024-09-20 19:05:52,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:05:52,343 INFO L225 Difference]: With dead ends: 48 [2024-09-20 19:05:52,343 INFO L226 Difference]: Without dead ends: 40 [2024-09-20 19:05:52,343 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:05:52,344 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:05:52,344 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 141 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:05:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-20 19:05:52,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-20 19:05:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 19:05:52,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-09-20 19:05:52,358 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 34 [2024-09-20 19:05:52,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:05:52,358 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-09-20 19:05:52,359 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-20 19:05:52,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-09-20 19:05:52,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-20 19:05:52,360 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:05:52,360 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:05:52,373 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 19:05:52,564 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:52,565 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:05:52,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:52,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1108147083, now seen corresponding path program 2 times [2024-09-20 19:05:52,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:05:52,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041051664] [2024-09-20 19:05:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:52,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:05:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:05:52,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520396393] [2024-09-20 19:05:52,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:05:52,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:52,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:05:52,629 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:05:52,630 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 19:05:52,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:05:52,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:05:52,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 19:05:52,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:05:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 19:05:52,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:05:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 19:05:53,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:05:53,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041051664] [2024-09-20 19:05:53,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:05:53,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520396393] [2024-09-20 19:05:53,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520396393] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:05:53,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:05:53,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2024-09-20 19:05:53,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228335601] [2024-09-20 19:05:53,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:05:53,067 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 19:05:53,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:05:53,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 19:05:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-09-20 19:05:53,070 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 13 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-09-20 19:05:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:05:53,324 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2024-09-20 19:05:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 19:05:53,324 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 13 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 55 [2024-09-20 19:05:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:05:53,325 INFO L225 Difference]: With dead ends: 45 [2024-09-20 19:05:53,325 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 19:05:53,325 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-09-20 19:05:53,326 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:05:53,326 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 230 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:05:53,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 19:05:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 19:05:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 19:05:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 19:05:53,327 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2024-09-20 19:05:53,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:05:53,327 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 19:05:53,327 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 13 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-09-20 19:05:53,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 19:05:53,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 19:05:53,329 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 19:05:53,342 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 19:05:53,530 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:53,533 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-20 19:05:53,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 19:05:54,062 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 19:05:54,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:05:54 BoogieIcfgContainer [2024-09-20 19:05:54,078 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 19:05:54,079 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 19:05:54,079 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 19:05:54,079 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 19:05:54,079 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:05:50" (3/4) ... [2024-09-20 19:05:54,081 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 19:05:54,125 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 19:05:54,125 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 19:05:54,125 INFO L158 Benchmark]: Toolchain (without parser) took 4094.95ms. Allocated memory was 172.0MB in the beginning and 234.9MB in the end (delta: 62.9MB). Free memory was 99.6MB in the beginning and 132.4MB in the end (delta: -32.8MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2024-09-20 19:05:54,126 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 172.0MB. Free memory is still 123.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:05:54,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.80ms. Allocated memory is still 172.0MB. Free memory was 99.4MB in the beginning and 87.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 19:05:54,128 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.22ms. Allocated memory is still 172.0MB. Free memory was 87.7MB in the beginning and 86.8MB in the end (delta: 951.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:05:54,129 INFO L158 Benchmark]: Boogie Preprocessor took 44.74ms. Allocated memory is still 172.0MB. Free memory was 86.8MB in the beginning and 139.9MB in the end (delta: -53.1MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2024-09-20 19:05:54,129 INFO L158 Benchmark]: RCFGBuilder took 304.43ms. Allocated memory was 172.0MB in the beginning and 234.9MB in the end (delta: 62.9MB). Free memory was 139.8MB in the beginning and 197.5MB in the end (delta: -57.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-20 19:05:54,129 INFO L158 Benchmark]: TraceAbstraction took 3484.35ms. Allocated memory is still 234.9MB. Free memory was 196.4MB in the beginning and 134.5MB in the end (delta: 61.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2024-09-20 19:05:54,129 INFO L158 Benchmark]: Witness Printer took 46.30ms. Allocated memory is still 234.9MB. Free memory was 134.5MB in the beginning and 132.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:05:54,130 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 172.0MB. Free memory is still 123.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.80ms. Allocated memory is still 172.0MB. Free memory was 99.4MB in the beginning and 87.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.22ms. Allocated memory is still 172.0MB. Free memory was 87.7MB in the beginning and 86.8MB in the end (delta: 951.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.74ms. Allocated memory is still 172.0MB. Free memory was 86.8MB in the beginning and 139.9MB in the end (delta: -53.1MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * RCFGBuilder took 304.43ms. Allocated memory was 172.0MB in the beginning and 234.9MB in the end (delta: 62.9MB). Free memory was 139.8MB in the beginning and 197.5MB in the end (delta: -57.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3484.35ms. Allocated memory is still 234.9MB. Free memory was 196.4MB in the beginning and 134.5MB in the end (delta: 61.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Witness Printer took 46.30ms. Allocated memory is still 234.9MB. Free memory was 134.5MB in the beginning and 132.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 531 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 414 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 221 IncrementalHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 117 mSDtfsCounter, 221 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 207 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=4, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 891 SizeOfPredicates, 6 NumberOfNonLiveVariables, 360 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 186/254 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: 27]: Loop Invariant Derived loop invariant: (((((c + ((__int128) c * y)) == (y + ((__int128) y * y))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__int128) y * y)))) && ((y + ((__int128) 30 * x)) == (((((((__int128) y * y) * y) * y) * 15) + (6 * (((((__int128) y * y) * y) * y) * y))) + ((((__int128) y * y) * y) * 10)))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-20 19:05:54,149 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