./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.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 9671c34313c5e47de5bd2f842db47c3009aa180bae8c949f2010db1179ac602f --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 19:41:30,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 19:41:30,331 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 19:41:30,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 19:41:30,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 19:41:30,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 19:41:30,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 19:41:30,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 19:41:30,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 19:41:30,358 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 19:41:30,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 19:41:30,358 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 19:41:30,359 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 19:41:30,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 19:41:30,359 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 19:41:30,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 19:41:30,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 19:41:30,360 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 19:41:30,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 19:41:30,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 19:41:30,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 19:41:30,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 19:41:30,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 19:41:30,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 19:41:30,365 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 19:41:30,365 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 19:41:30,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 19:41:30,365 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 19:41:30,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 19:41:30,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 19:41:30,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 19:41:30,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 19:41:30,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:41:30,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 19:41:30,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 19:41:30,367 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 19:41:30,367 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 19:41:30,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 19:41:30,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 19:41:30,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 19:41:30,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 19:41:30,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 19:41:30,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9671c34313c5e47de5bd2f842db47c3009aa180bae8c949f2010db1179ac602f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 19:41:30,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 19:41:30,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 19:41:30,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 19:41:30,631 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 19:41:30,632 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 19:41:30,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2024-09-15 19:41:32,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 19:41:32,186 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 19:41:32,188 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2024-09-15 19:41:32,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7b4481f61/c2f27a3ab52545878b8cc8e77379ac02/FLAGd0db76f1b [2024-09-15 19:41:32,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7b4481f61/c2f27a3ab52545878b8cc8e77379ac02 [2024-09-15 19:41:32,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 19:41:32,211 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 19:41:32,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 19:41:32,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 19:41:32,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 19:41:32,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6481dcbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32, skipping insertion in model container [2024-09-15 19:41:32,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,236 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 19:41:32,356 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2024-09-15 19:41:32,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:41:32,383 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 19:41:32,393 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2024-09-15 19:41:32,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:41:32,420 INFO L204 MainTranslator]: Completed translation [2024-09-15 19:41:32,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32 WrapperNode [2024-09-15 19:41:32,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 19:41:32,421 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 19:41:32,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 19:41:32,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 19:41:32,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,449 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 19:41:32,453 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 19:41:32,454 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 19:41:32,454 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 19:41:32,454 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 19:41:32,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,480 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-15 19:41:32,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,482 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 19:41:32,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 19:41:32,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 19:41:32,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 19:41:32,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (1/1) ... [2024-09-15 19:41:32,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:41:32,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:41:32,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 19:41:32,527 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 19:41:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 19:41:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-15 19:41:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-15 19:41:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 19:41:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 19:41:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 19:41:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 19:41:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 19:41:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 19:41:32,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 19:41:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 19:41:32,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 19:41:32,612 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 19:41:32,614 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 19:41:32,769 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-15 19:41:32,769 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 19:41:32,802 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 19:41:32,805 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 19:41:32,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:41:32 BoogieIcfgContainer [2024-09-15 19:41:32,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 19:41:32,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 19:41:32,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 19:41:32,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 19:41:32,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:41:32" (1/3) ... [2024-09-15 19:41:32,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ada3217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:41:32, skipping insertion in model container [2024-09-15 19:41:32,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:41:32" (2/3) ... [2024-09-15 19:41:32,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ada3217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:41:32, skipping insertion in model container [2024-09-15 19:41:32,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:41:32" (3/3) ... [2024-09-15 19:41:32,813 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.c [2024-09-15 19:41:32,828 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 19:41:32,828 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 19:41:32,879 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 19:41:32,884 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;@5add0f8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 19:41:32,884 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 19:41:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 19:41:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-15 19:41:32,896 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:41:32,896 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:41:32,897 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:41:32,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:41:32,901 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-15 19:41:32,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:41:32,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731520973] [2024-09-15 19:41:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:41:32,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:41:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:41:33,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:41:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:41:33,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:41:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:41:33,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:41:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:41:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 19:41:33,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:41:33,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731520973] [2024-09-15 19:41:33,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731520973] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:41:33,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:41:33,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 19:41:33,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856754164] [2024-09-15 19:41:33,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:41:33,052 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 19:41:33,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:41:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 19:41:33,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 19:41:33,070 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-15 19:41:33,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:41:33,095 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-15 19:41:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 19:41:33,098 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-15 19:41:33,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:41:33,103 INFO L225 Difference]: With dead ends: 48 [2024-09-15 19:41:33,104 INFO L226 Difference]: Without dead ends: 23 [2024-09-15 19:41:33,106 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 19:41:33,110 INFO L434 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:41:33,111 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:41:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-15 19:41:33,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-15 19:41:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 19:41:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-15 19:41:33,140 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-15 19:41:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:41:33,141 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-15 19:41:33,141 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-15 19:41:33,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:41:33,142 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-15 19:41:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-15 19:41:33,143 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:41:33,143 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:41:33,143 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 19:41:33,143 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:41:33,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:41:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-15 19:41:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:41:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646797065] [2024-09-15 19:41:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:41:33,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:41:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:41:33,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620406227] [2024-09-15 19:41:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:41:33,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:41:33,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:41:33,166 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:41:33,168 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 19:41:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:41:33,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-15 19:41:33,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:41:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 19:41:33,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 19:41:33,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:41:33,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646797065] [2024-09-15 19:41:33,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:41:33,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620406227] [2024-09-15 19:41:33,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620406227] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:41:33,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:41:33,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 19:41:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180867467] [2024-09-15 19:41:33,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:41:33,362 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:41:33,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:41:33,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:41:33,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:41:33,364 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 19:41:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:41:33,413 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-15 19:41:33,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:41:33,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-15 19:41:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:41:33,416 INFO L225 Difference]: With dead ends: 34 [2024-09-15 19:41:33,416 INFO L226 Difference]: Without dead ends: 30 [2024-09-15 19:41:33,417 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 19:41:33,418 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:41:33,419 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:41:33,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-15 19:41:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-15 19:41:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 19:41:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-15 19:41:33,430 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-15 19:41:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:41:33,431 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-15 19:41:33,431 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-15 19:41:33,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:41:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-15 19:41:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-15 19:41:33,432 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:41:33,432 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:41:33,449 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 19:41:33,636 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:41:33,637 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:41:33,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:41:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-15 19:41:33,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:41:33,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285773250] [2024-09-15 19:41:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:41:33,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:41:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:41:33,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216752606] [2024-09-15 19:41:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:41:33,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:41:33,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:41:33,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:41:33,674 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 19:41:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:41:33,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-15 19:41:33,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:41:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 19:41:33,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:41:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-15 19:41:33,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:41:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285773250] [2024-09-15 19:41:33,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:41:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216752606] [2024-09-15 19:41:33,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216752606] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 19:41:33,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 19:41:33,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-15 19:41:33,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358389230] [2024-09-15 19:41:33,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:41:33,875 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:41:33,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:41:33,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:41:33,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-15 19:41:33,876 INFO L87 Difference]: Start difference. First operand 30 states and 33 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 19:41:33,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:41:33,912 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-15 19:41:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:41:33,912 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, (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 28 [2024-09-15 19:41:33,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:41:33,913 INFO L225 Difference]: With dead ends: 36 [2024-09-15 19:41:33,913 INFO L226 Difference]: Without dead ends: 32 [2024-09-15 19:41:33,913 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-15 19:41:33,914 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 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 [2024-09-15 19:41:33,914 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:41:33,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-15 19:41:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-15 19:41:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 19:41:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-15 19:41:33,923 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-15 19:41:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:41:33,923 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-15 19:41:33,923 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 19:41:33,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:41:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-15 19:41:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-15 19:41:33,925 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:41:33,925 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:41:33,938 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 19:41:34,128 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 [2024-09-15 19:41:34,129 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:41:34,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:41:34,130 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-15 19:41:34,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:41:34,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080614191] [2024-09-15 19:41:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:41:34,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:41:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:41:34,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665422769] [2024-09-15 19:41:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:41:34,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:41:34,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:41:34,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:41:34,169 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 19:41:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:41:34,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-15 19:41:34,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:41:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-15 19:41:34,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:41:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-15 19:41:34,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:41:34,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080614191] [2024-09-15 19:41:34,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:41:34,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665422769] [2024-09-15 19:41:34,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665422769] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:41:34,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:41:34,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-15 19:41:34,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934940861] [2024-09-15 19:41:34,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:41:34,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-15 19:41:34,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:41:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-15 19:41:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-15 19:41:34,765 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-15 19:41:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:41:35,016 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-09-15 19:41:35,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-15 19:41:35,016 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-15 19:41:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:41:35,017 INFO L225 Difference]: With dead ends: 53 [2024-09-15 19:41:35,017 INFO L226 Difference]: Without dead ends: 45 [2024-09-15 19:41:35,017 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-15 19:41:35,018 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:41:35,018 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 178 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:41:35,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-15 19:41:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-15 19:41:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-15 19:41:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-15 19:41:35,029 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 39 [2024-09-15 19:41:35,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:41:35,030 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-15 19:41:35,030 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-15 19:41:35,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:41:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-15 19:41:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-15 19:41:35,031 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:41:35,031 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:41:35,047 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 19:41:35,235 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 [2024-09-15 19:41:35,235 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:41:35,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:41:35,236 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-15 19:41:35,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:41:35,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930864319] [2024-09-15 19:41:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:41:35,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:41:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 19:41:35,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989967181] [2024-09-15 19:41:35,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:41:35,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:41:35,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:41:35,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:41:35,270 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 19:41:35,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:41:35,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:41:35,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-15 19:41:35,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:41:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 38 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-15 19:41:35,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:43:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 31 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-15 19:43:05,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:05,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930864319] [2024-09-15 19:43:05,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 19:43:05,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989967181] [2024-09-15 19:43:05,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989967181] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:43:05,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:43:05,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2024-09-15 19:43:05,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813764809] [2024-09-15 19:43:05,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:43:05,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-15 19:43:05,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-15 19:43:05,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=592, Unknown=3, NotChecked=0, Total=702 [2024-09-15 19:43:05,745 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-15 19:43:22,168 WARN L293 SmtUtils]: Spent 16.06s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-15 19:43:26,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:26,472 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2024-09-15 19:43:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-15 19:43:26,473 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) Word has length 60 [2024-09-15 19:43:26,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:26,474 INFO L225 Difference]: With dead ends: 74 [2024-09-15 19:43:26,476 INFO L226 Difference]: Without dead ends: 66 [2024-09-15 19:43:26,477 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 78.2s TimeCoverageRelationStatistics Valid=248, Invalid=1471, Unknown=3, NotChecked=0, Total=1722 [2024-09-15 19:43:26,477 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 33 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:26,478 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 319 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 19:43:26,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-15 19:43:26,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2024-09-15 19:43:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 16 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 19:43:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2024-09-15 19:43:26,495 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 60 [2024-09-15 19:43:26,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:26,496 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2024-09-15 19:43:26,496 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-15 19:43:26,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2024-09-15 19:43:26,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-15 19:43:26,497 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:43:26,497 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:43:26,511 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 19:43:26,701 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 [2024-09-15 19:43:26,702 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:43:26,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash -235169010, now seen corresponding path program 3 times [2024-09-15 19:43:26,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:43:26,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676900774] [2024-09-15 19:43:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:43:26,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:43:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:43:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:43:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:43:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-15 19:43:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-15 19:43:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-15 19:43:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-15 19:43:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 19:43:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-15 19:43:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 19:43:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-15 19:43:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-15 19:43:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-15 19:43:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-15 19:43:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:43:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 133 proven. 27 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-09-15 19:43:27,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:43:27,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676900774] [2024-09-15 19:43:27,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676900774] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:43:27,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152496214] [2024-09-15 19:43:27,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 19:43:27,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:43:27,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:43:27,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:43:27,314 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 19:43:27,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-15 19:43:27,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:43:27,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-15 19:43:27,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:43:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 225 proven. 3 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-15 19:43:27,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:43:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 157 proven. 3 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-09-15 19:43:27,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152496214] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:43:27,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:43:27,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2024-09-15 19:43:27,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231301909] [2024-09-15 19:43:27,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:43:27,857 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-15 19:43:27,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:43:27,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-15 19:43:27,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=739, Unknown=0, NotChecked=0, Total=1122 [2024-09-15 19:43:27,858 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 32 states have internal predecessors, (77), 31 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 31 states have call predecessors, (36), 31 states have call successors, (36) [2024-09-15 19:43:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:43:28,004 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2024-09-15 19:43:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 19:43:28,015 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 32 states have internal predecessors, (77), 31 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 31 states have call predecessors, (36), 31 states have call successors, (36) Word has length 95 [2024-09-15 19:43:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:43:28,016 INFO L225 Difference]: With dead ends: 70 [2024-09-15 19:43:28,016 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 19:43:28,017 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=388, Invalid=802, Unknown=0, NotChecked=0, Total=1190 [2024-09-15 19:43:28,017 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:43:28,018 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 197 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:43:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 19:43:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 19:43:28,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 19:43:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 19:43:28,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2024-09-15 19:43:28,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:43:28,019 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 19:43:28,019 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 32 states have internal predecessors, (77), 31 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 31 states have call predecessors, (36), 31 states have call successors, (36) [2024-09-15 19:43:28,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:43:28,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 19:43:28,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 19:43:28,021 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-15 19:43:28,038 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-15 19:43:28,226 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-15 19:43:28,230 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-09-15 19:43:28,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-15 19:43:28,873 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 19:43:28,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:43:28 BoogieIcfgContainer [2024-09-15 19:43:28,888 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 19:43:28,888 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-15 19:43:28,888 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-15 19:43:28,888 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-15 19:43:28,889 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:41:32" (3/4) ... [2024-09-15 19:43:28,890 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-15 19:43:28,892 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-15 19:43:28,893 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-15 19:43:28,893 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-15 19:43:28,893 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-15 19:43:28,895 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-09-15 19:43:28,895 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-15 19:43:28,895 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-15 19:43:28,895 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-15 19:43:28,951 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-15 19:43:28,952 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-15 19:43:28,952 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-15 19:43:28,952 INFO L158 Benchmark]: Toolchain (without parser) took 116740.78ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 59.6MB in the beginning and 66.0MB in the end (delta: -6.4MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2024-09-15 19:43:28,952 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 81.8MB. Free memory is still 63.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:43:28,952 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.07ms. Allocated memory is still 81.8MB. Free memory was 59.3MB in the beginning and 47.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 19:43:28,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.87ms. Allocated memory is still 81.8MB. Free memory was 47.6MB in the beginning and 46.8MB in the end (delta: 849.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:43:28,953 INFO L158 Benchmark]: Boogie Preprocessor took 36.92ms. Allocated memory is still 81.8MB. Free memory was 46.8MB in the beginning and 45.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 19:43:28,953 INFO L158 Benchmark]: RCFGBuilder took 314.52ms. Allocated memory is still 81.8MB. Free memory was 44.9MB in the beginning and 57.7MB in the end (delta: -12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 19:43:28,953 INFO L158 Benchmark]: TraceAbstraction took 116080.99ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 57.2MB in the beginning and 71.2MB in the end (delta: -14.0MB). Peak memory consumption was 83.5MB. Max. memory is 16.1GB. [2024-09-15 19:43:28,954 INFO L158 Benchmark]: Witness Printer took 63.54ms. Allocated memory is still 144.7MB. Free memory was 71.2MB in the beginning and 66.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-15 19:43:28,954 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 81.8MB. Free memory is still 63.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.07ms. Allocated memory is still 81.8MB. Free memory was 59.3MB in the beginning and 47.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.87ms. Allocated memory is still 81.8MB. Free memory was 47.6MB in the beginning and 46.8MB in the end (delta: 849.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.92ms. Allocated memory is still 81.8MB. Free memory was 46.8MB in the beginning and 45.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 314.52ms. Allocated memory is still 81.8MB. Free memory was 44.9MB in the beginning and 57.7MB in the end (delta: -12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 116080.99ms. Allocated memory was 81.8MB in the beginning and 144.7MB in the end (delta: 62.9MB). Free memory was 57.2MB in the beginning and 71.2MB in the end (delta: -14.0MB). Peak memory consumption was 83.5MB. Max. memory is 16.1GB. * Witness Printer took 63.54ms. Allocated memory is still 144.7MB. Free memory was 71.2MB in the beginning and 66.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 115.4s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 21.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 872 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 727 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 616 IncrementalHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 145 mSDtfsCounter, 616 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 432 SyntacticMatches, 4 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 78.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=5, InterpolantAutomatonStates: 61, 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 92.3s InterpolantComputationTime, 507 NumberOfCodeBlocks, 507 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 570 ConstructedInterpolants, 0 QuantifiedInterpolants, 2942 SizeOfPredicates, 8 NumberOfNonLiveVariables, 632 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 1313/1429 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: 28]: Loop Invariant Derived loop invariant: ((((((((((k <= 5) && ((k == 3) || (3 < k))) && (276 == x)) && (y == 3)) && (c == 3)) || (((((k <= 5) && ((1 < k) || (k == 1))) && (y == 1)) && (x == 1)) && (c == 1))) || (((((x == 33) && (y == 2)) && (k <= 5)) && ((k == 2) || (2 < k))) && (c == 2))) || (((((x == 0) && (k <= 5)) && (0 <= k)) && (c == 0)) && (y == 0))) || (((((k <= 5) && (0 <= k)) && (((__int128) y * y) == ((__int128) k * y))) && ((((2 * ((((((__int128) y * y) * y) * y) * y) * y)) + (6 * (((((__int128) y * y) * y) * y) * y))) + (5 * ((((__int128) y * y) * y) * y))) == (((__int128) x * 12) + ((__int128) y * y)))) && (5 <= c))) || (((((k <= 5) && (4 <= k)) && (y == 4)) && (c == 4)) && (1300 == x))) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - 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! [2024-09-15 19:43:28,979 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