./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.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 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.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 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 --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-dev-5189fb6-m [2024-09-13 02:56:56,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 02:56:56,301 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 02:56:56,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 02:56:56,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 02:56:56,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 02:56:56,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 02:56:56,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 02:56:56,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 02:56:56,333 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 02:56:56,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 02:56:56,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 02:56:56,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 02:56:56,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 02:56:56,336 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 02:56:56,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 02:56:56,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 02:56:56,337 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 02:56:56,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 02:56:56,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 02:56:56,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 02:56:56,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 02:56:56,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 02:56:56,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 02:56:56,340 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 02:56:56,340 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 02:56:56,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 02:56:56,341 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 02:56:56,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 02:56:56,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 02:56:56,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 02:56:56,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 02:56:56,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:56:56,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 02:56:56,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 02:56:56,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 02:56:56,342 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 02:56:56,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 02:56:56,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 02:56:56,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 02:56:56,343 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 02:56:56,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 02:56:56,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 02:56:56,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 02:56:56,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 02:56:56,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 02:56:56,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 02:56:56,591 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 02:56:56,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2024-09-13 02:56:57,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 02:56:57,964 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 02:56:57,965 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2024-09-13 02:56:57,970 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/990798bd8/c5aa8c2008d44064b3c17d405805fee8/FLAGad6a31bbe [2024-09-13 02:56:58,373 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/990798bd8/c5aa8c2008d44064b3c17d405805fee8 [2024-09-13 02:56:58,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 02:56:58,376 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 02:56:58,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 02:56:58,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 02:56:58,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 02:56:58,383 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c0c23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58, skipping insertion in model container [2024-09-13 02:56:58,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 02:56:58,504 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2024-09-13 02:56:58,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:56:58,520 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 02:56:58,528 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2024-09-13 02:56:58,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:56:58,545 INFO L204 MainTranslator]: Completed translation [2024-09-13 02:56:58,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58 WrapperNode [2024-09-13 02:56:58,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 02:56:58,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 02:56:58,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 02:56:58,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 02:56:58,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,563 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 02:56:58,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 02:56:58,564 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 02:56:58,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 02:56:58,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 02:56:58,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,585 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]. [2024-09-13 02:56:58,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 02:56:58,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 02:56:58,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 02:56:58,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 02:56:58,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (1/1) ... [2024-09-13 02:56:58,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:56:58,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:56:58,622 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) [2024-09-13 02:56:58,627 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 [2024-09-13 02:56:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 02:56:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 02:56:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 02:56:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 02:56:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 02:56:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 02:56:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 02:56:58,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 02:56:58,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 02:56:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 02:56:58,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 02:56:58,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 02:56:58,713 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 02:56:58,715 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 02:56:58,866 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 02:56:58,866 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 02:56:58,899 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 02:56:58,899 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 02:56:58,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:56:58 BoogieIcfgContainer [2024-09-13 02:56:58,899 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 02:56:58,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 02:56:58,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 02:56:58,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 02:56:58,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 02:56:58" (1/3) ... [2024-09-13 02:56:58,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301cf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:56:58, skipping insertion in model container [2024-09-13 02:56:58,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:56:58" (2/3) ... [2024-09-13 02:56:58,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301cf6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:56:58, skipping insertion in model container [2024-09-13 02:56:58,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:56:58" (3/3) ... [2024-09-13 02:56:58,917 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c [2024-09-13 02:56:58,933 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 02:56:58,934 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 02:56:58,981 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 02:56:58,988 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;@14882055, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 02:56:58,988 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 02:56:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 02:56:58,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 02:56:58,996 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:56:58,997 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:56:58,998 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:56:59,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:56:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2062108722, now seen corresponding path program 1 times [2024-09-13 02:56:59,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:56:59,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146862432] [2024-09-13 02:56:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:56:59,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:56:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:56:59,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:56:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:56:59,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:56:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:56:59,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 02:56:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:56:59,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 02:56:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:56:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 02:56:59,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:56:59,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146862432] [2024-09-13 02:56:59,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146862432] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:56:59,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:56:59,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 02:56:59,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076990960] [2024-09-13 02:56:59,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:56:59,131 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 02:56:59,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:56:59,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 02:56:59,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 02:56:59,150 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 02:56:59,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:56:59,172 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2024-09-13 02:56:59,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 02:56:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-13 02:56:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:56:59,178 INFO L225 Difference]: With dead ends: 54 [2024-09-13 02:56:59,178 INFO L226 Difference]: Without dead ends: 26 [2024-09-13 02:56:59,180 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 02:56:59,182 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:56:59,183 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:56:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-13 02:56:59,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-13 02:56:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 02:56:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-09-13 02:56:59,214 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 27 [2024-09-13 02:56:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:56:59,214 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-09-13 02:56:59,215 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 02:56:59,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:56:59,215 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-09-13 02:56:59,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 02:56:59,216 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:56:59,216 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:56:59,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 02:56:59,217 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:56:59,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:56:59,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1085938704, now seen corresponding path program 1 times [2024-09-13 02:56:59,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:56:59,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659843773] [2024-09-13 02:56:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:56:59,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:56:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:56:59,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136133447] [2024-09-13 02:56:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:56:59,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:56:59,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:56:59,268 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) [2024-09-13 02:56:59,272 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 02:56:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:56:59,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 02:56:59,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:56:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 02:56:59,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:56:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 02:56:59,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:56:59,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659843773] [2024-09-13 02:56:59,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:56:59,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136133447] [2024-09-13 02:56:59,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136133447] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 02:56:59,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:56:59,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-09-13 02:56:59,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904533106] [2024-09-13 02:56:59,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:56:59,611 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:56:59,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:56:59,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:56:59,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-13 02:56:59,613 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 02:56:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:56:59,704 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-09-13 02:56:59,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:56:59,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-13 02:56:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:56:59,706 INFO L225 Difference]: With dead ends: 37 [2024-09-13 02:56:59,707 INFO L226 Difference]: Without dead ends: 35 [2024-09-13 02:56:59,707 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-13 02:56:59,708 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:56:59,708 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:56:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-13 02:56:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-09-13 02:56:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 02:56:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-13 02:56:59,716 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 27 [2024-09-13 02:56:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:56:59,716 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-13 02:56:59,717 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 02:56:59,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:56:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-13 02:56:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-13 02:56:59,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:56:59,718 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:56:59,730 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 02:56:59,922 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 [2024-09-13 02:56:59,923 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:56:59,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:56:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1368497365, now seen corresponding path program 1 times [2024-09-13 02:56:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:56:59,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915132843] [2024-09-13 02:56:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:56:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:56:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:57:00,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:57:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:57:00,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:57:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:57:00,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 02:57:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:57:00,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 02:57:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:57:00,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 02:57:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:57:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 02:57:00,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:57:00,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915132843] [2024-09-13 02:57:00,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915132843] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:57:00,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:57:00,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-13 02:57:00,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464870326] [2024-09-13 02:57:00,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:57:00,115 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 02:57:00,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:57:00,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 02:57:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:57:00,116 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:57:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:57:00,177 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-09-13 02:57:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 02:57:00,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-13 02:57:00,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:57:00,179 INFO L225 Difference]: With dead ends: 42 [2024-09-13 02:57:00,179 INFO L226 Difference]: Without dead ends: 35 [2024-09-13 02:57:00,179 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 02:57:00,180 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:57:00,180 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:57:00,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-13 02:57:00,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-09-13 02:57:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 02:57:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-13 02:57:00,193 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2024-09-13 02:57:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:57:00,194 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-13 02:57:00,194 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:57:00,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-13 02:57:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-13 02:57:00,196 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:57:00,196 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:57:00,196 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 02:57:00,196 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:57:00,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:00,197 INFO L85 PathProgramCache]: Analyzing trace with hash -65395240, now seen corresponding path program 1 times [2024-09-13 02:57:00,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:57:00,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842144993] [2024-09-13 02:57:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:00,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:57:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:57:00,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632092421] [2024-09-13 02:57:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:00,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:00,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:57:00,237 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) [2024-09-13 02:57:00,239 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 02:57:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:57:00,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 02:57:00,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:57:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 02:57:00,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:57:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 02:57:01,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:57:01,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842144993] [2024-09-13 02:57:01,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:57:01,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632092421] [2024-09-13 02:57:01,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632092421] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 02:57:01,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:57:01,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-09-13 02:57:01,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268016761] [2024-09-13 02:57:01,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:57:01,867 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 02:57:01,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:57:01,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 02:57:01,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-09-13 02:57:01,868 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:57:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:57:02,019 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-09-13 02:57:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 02:57:02,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-09-13 02:57:02,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:57:02,022 INFO L225 Difference]: With dead ends: 45 [2024-09-13 02:57:02,022 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 02:57:02,022 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-13 02:57:02,023 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:57:02,023 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:57:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 02:57:02,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-09-13 02:57:02,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 02:57:02,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-09-13 02:57:02,036 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2024-09-13 02:57:02,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:57:02,037 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-09-13 02:57:02,037 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:57:02,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:02,037 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-09-13 02:57:02,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-13 02:57:02,038 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:57:02,038 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:57:02,058 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 02:57:02,238 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:02,239 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:57:02,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1709612122, now seen corresponding path program 1 times [2024-09-13 02:57:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:57:02,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014001063] [2024-09-13 02:57:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:57:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:57:02,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575839793] [2024-09-13 02:57:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:02,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:02,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:57:02,254 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) [2024-09-13 02:57:02,255 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 02:57:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:57:02,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-13 02:57:02,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:57:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 02:57:02,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:57:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 02:57:03,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:57:03,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014001063] [2024-09-13 02:57:03,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:57:03,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575839793] [2024-09-13 02:57:03,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575839793] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:57:03,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:57:03,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2024-09-13 02:57:03,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613485353] [2024-09-13 02:57:03,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:57:03,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 02:57:03,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:57:03,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 02:57:03,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-13 02:57:03,045 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 02:57:03,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:57:03,432 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-09-13 02:57:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 02:57:03,432 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 36 [2024-09-13 02:57:03,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:57:03,435 INFO L225 Difference]: With dead ends: 67 [2024-09-13 02:57:03,435 INFO L226 Difference]: Without dead ends: 60 [2024-09-13 02:57:03,435 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2024-09-13 02:57:03,436 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 02:57:03,436 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 161 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 02:57:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-13 02:57:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-13 02:57:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 02:57:03,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-09-13 02:57:03,455 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 36 [2024-09-13 02:57:03,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:57:03,455 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-09-13 02:57:03,455 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 02:57:03,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-09-13 02:57:03,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-13 02:57:03,456 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:57:03,456 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:57:03,470 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 02:57:03,657 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:03,657 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:57:03,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1894068381, now seen corresponding path program 1 times [2024-09-13 02:57:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:57:03,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283760720] [2024-09-13 02:57:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:03,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:57:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:57:03,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173902575] [2024-09-13 02:57:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:03,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:03,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:57:03,682 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) [2024-09-13 02:57:03,683 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 02:57:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:57:03,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 02:57:03,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:57:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-13 02:57:03,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:57:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-13 02:57:03,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:57:03,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283760720] [2024-09-13 02:57:03,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:57:03,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173902575] [2024-09-13 02:57:03,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173902575] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:57:03,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:57:03,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-09-13 02:57:03,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445402370] [2024-09-13 02:57:03,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:57:03,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 02:57:03,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:57:03,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 02:57:03,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-13 02:57:03,840 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-13 02:57:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:57:03,917 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-13 02:57:03,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 02:57:03,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 42 [2024-09-13 02:57:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:57:03,918 INFO L225 Difference]: With dead ends: 67 [2024-09-13 02:57:03,918 INFO L226 Difference]: Without dead ends: 60 [2024-09-13 02:57:03,918 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-13 02:57:03,919 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:57:03,919 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:57:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-13 02:57:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-09-13 02:57:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 02:57:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-09-13 02:57:03,932 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 42 [2024-09-13 02:57:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:57:03,932 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-09-13 02:57:03,932 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-13 02:57:03,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-09-13 02:57:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-13 02:57:03,936 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:57:03,936 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:57:03,948 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 02:57:04,140 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:04,141 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:57:04,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash -455011438, now seen corresponding path program 1 times [2024-09-13 02:57:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:57:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084565425] [2024-09-13 02:57:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:04,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:57:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:57:04,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768593450] [2024-09-13 02:57:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:04,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:04,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:57:04,163 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) [2024-09-13 02:57:04,164 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 02:57:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:57:04,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-13 02:57:04,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:57:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 02:57:06,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:57:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-13 02:57:10,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:57:10,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084565425] [2024-09-13 02:57:10,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:57:10,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768593450] [2024-09-13 02:57:10,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768593450] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:57:10,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:57:10,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2024-09-13 02:57:10,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618722321] [2024-09-13 02:57:10,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:57:10,116 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 02:57:10,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:57:10,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 02:57:10,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-09-13 02:57:10,117 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 02:57:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:57:13,268 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2024-09-13 02:57:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 02:57:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 45 [2024-09-13 02:57:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:57:13,269 INFO L225 Difference]: With dead ends: 95 [2024-09-13 02:57:13,270 INFO L226 Difference]: Without dead ends: 93 [2024-09-13 02:57:13,270 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2024-09-13 02:57:13,271 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-13 02:57:13,271 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 203 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-13 02:57:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-13 02:57:13,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-09-13 02:57:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 70 states have internal predecessors, (77), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-13 02:57:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2024-09-13 02:57:13,300 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 45 [2024-09-13 02:57:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:57:13,300 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2024-09-13 02:57:13,301 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-13 02:57:13,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2024-09-13 02:57:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-13 02:57:13,302 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:57:13,302 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:57:13,315 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 02:57:13,502 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 02:57:13,502 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:57:13,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:13,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1692331952, now seen corresponding path program 2 times [2024-09-13 02:57:13,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:57:13,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867741987] [2024-09-13 02:57:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:13,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:57:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:57:13,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140542472] [2024-09-13 02:57:13,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:57:13,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:13,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:57:13,531 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:57:13,534 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 02:57:13,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:57:13,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:57:13,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-13 02:57:13,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:57:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-13 02:57:13,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:57:14,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:57:14,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867741987] [2024-09-13 02:57:14,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:57:14,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140542472] [2024-09-13 02:57:14,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140542472] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:57:14,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:57:14,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-13 02:57:14,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402946254] [2024-09-13 02:57:14,863 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 02:57:14,863 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 02:57:14,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:57:14,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 02:57:14,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-09-13 02:57:14,865 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-13 02:57:15,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:57:15,365 INFO L93 Difference]: Finished difference Result 158 states and 188 transitions. [2024-09-13 02:57:15,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 02:57:15,365 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 63 [2024-09-13 02:57:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:57:15,366 INFO L225 Difference]: With dead ends: 158 [2024-09-13 02:57:15,366 INFO L226 Difference]: Without dead ends: 156 [2024-09-13 02:57:15,367 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-09-13 02:57:15,367 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 02:57:15,367 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 325 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 02:57:15,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-09-13 02:57:15,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 137. [2024-09-13 02:57:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 100 states have (on average 1.14) internal successors, (114), 107 states have internal predecessors, (114), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (24), 17 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-13 02:57:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 163 transitions. [2024-09-13 02:57:15,408 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 163 transitions. Word has length 63 [2024-09-13 02:57:15,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:57:15,408 INFO L474 AbstractCegarLoop]: Abstraction has 137 states and 163 transitions. [2024-09-13 02:57:15,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-13 02:57:15,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 163 transitions. [2024-09-13 02:57:15,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-13 02:57:15,411 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:57:15,411 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:57:15,425 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 02:57:15,611 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:15,612 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:57:15,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:15,612 INFO L85 PathProgramCache]: Analyzing trace with hash 499200656, now seen corresponding path program 2 times [2024-09-13 02:57:15,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:57:15,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218292425] [2024-09-13 02:57:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:15,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:57:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:57:15,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816088556] [2024-09-13 02:57:15,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:57:15,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:15,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:57:15,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:57:15,651 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 02:57:15,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:57:15,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:57:15,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-13 02:57:15,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:57:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-13 02:57:16,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:57:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:57:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218292425] [2024-09-13 02:57:25,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:57:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816088556] [2024-09-13 02:57:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816088556] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:57:25,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:57:25,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-09-13 02:57:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212704086] [2024-09-13 02:57:25,774 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 02:57:25,774 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 02:57:25,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:57:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 02:57:25,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-09-13 02:57:25,775 INFO L87 Difference]: Start difference. First operand 137 states and 163 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-13 02:57:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:57:26,202 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2024-09-13 02:57:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 02:57:26,203 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 63 [2024-09-13 02:57:26,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:57:26,204 INFO L225 Difference]: With dead ends: 155 [2024-09-13 02:57:26,204 INFO L226 Difference]: Without dead ends: 153 [2024-09-13 02:57:26,204 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2024-09-13 02:57:26,205 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 02:57:26,205 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 250 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 02:57:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-09-13 02:57:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 143. [2024-09-13 02:57:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 111 states have internal predecessors, (120), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 18 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-13 02:57:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 169 transitions. [2024-09-13 02:57:26,240 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 169 transitions. Word has length 63 [2024-09-13 02:57:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:57:26,240 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 169 transitions. [2024-09-13 02:57:26,241 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-13 02:57:26,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 169 transitions. [2024-09-13 02:57:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-13 02:57:26,242 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:57:26,242 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:57:26,248 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 02:57:26,442 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:26,443 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:57:26,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:26,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1745737240, now seen corresponding path program 3 times [2024-09-13 02:57:26,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:57:26,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864504108] [2024-09-13 02:57:26,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:26,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:57:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:57:26,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530804029] [2024-09-13 02:57:26,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 02:57:26,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:26,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:57:26,497 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:57:26,500 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 02:57:26,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 02:57:26,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:57:26,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-13 02:57:26,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:57:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-13 02:57:29,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:57:29,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:57:29,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864504108] [2024-09-13 02:57:29,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:57:29,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530804029] [2024-09-13 02:57:29,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530804029] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:57:29,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:57:29,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-09-13 02:57:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983108864] [2024-09-13 02:57:29,838 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 02:57:29,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 02:57:29,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:57:29,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 02:57:29,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2024-09-13 02:57:29,839 INFO L87 Difference]: Start difference. First operand 143 states and 169 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-13 02:57:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:57:32,261 INFO L93 Difference]: Finished difference Result 185 states and 216 transitions. [2024-09-13 02:57:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 02:57:32,261 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-09-13 02:57:32,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:57:32,263 INFO L225 Difference]: With dead ends: 185 [2024-09-13 02:57:32,263 INFO L226 Difference]: Without dead ends: 63 [2024-09-13 02:57:32,265 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2024-09-13 02:57:32,266 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-13 02:57:32,266 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 257 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-13 02:57:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-13 02:57:32,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-13 02:57:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 02:57:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2024-09-13 02:57:32,282 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 72 [2024-09-13 02:57:32,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:57:32,282 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2024-09-13 02:57:32,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-13 02:57:32,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:32,283 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2024-09-13 02:57:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-13 02:57:32,283 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:57:32,283 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:57:32,295 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 02:57:32,483 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:32,484 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:57:32,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:57:32,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1255090726, now seen corresponding path program 3 times [2024-09-13 02:57:32,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:57:32,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072966756] [2024-09-13 02:57:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:57:32,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:57:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:57:32,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540896529] [2024-09-13 02:57:32,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 02:57:32,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:57:32,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:57:32,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:57:32,512 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 02:57:32,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-13 02:57:32,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:57:32,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-13 02:57:32,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:57:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 21 proven. 67 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-13 02:57:33,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:58:02,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:58:02,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072966756] [2024-09-13 02:58:02,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:58:02,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540896529] [2024-09-13 02:58:02,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540896529] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:58:02,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:58:02,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-09-13 02:58:02,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546998697] [2024-09-13 02:58:02,402 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 02:58:02,402 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 02:58:02,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:58:02,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 02:58:02,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2024-09-13 02:58:02,403 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 19 states have internal predecessors, (40), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 02:58:02,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:58:02,677 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2024-09-13 02:58:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 02:58:02,678 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 19 states have internal predecessors, (40), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 72 [2024-09-13 02:58:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:58:02,678 INFO L225 Difference]: With dead ends: 77 [2024-09-13 02:58:02,678 INFO L226 Difference]: Without dead ends: 75 [2024-09-13 02:58:02,679 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2024-09-13 02:58:02,679 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 02:58:02,679 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 190 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 02:58:02,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-13 02:58:02,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-09-13 02:58:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 52 states have internal predecessors, (52), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 02:58:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-09-13 02:58:02,696 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 72 [2024-09-13 02:58:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:58:02,696 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-09-13 02:58:02,696 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 19 states have internal predecessors, (40), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 02:58:02,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:58:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-09-13 02:58:02,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-13 02:58:02,697 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:58:02,697 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:58:02,703 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 02:58:02,897 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 02:58:02,897 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:58:02,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:58:02,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1793279440, now seen corresponding path program 4 times [2024-09-13 02:58:02,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:58:02,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588277767] [2024-09-13 02:58:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:58:02,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:58:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:58:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:58:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 02:58:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 02:58:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 02:58:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-13 02:58:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-13 02:58:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 02:58:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-13 02:58:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 02:58:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:58:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 53 proven. 52 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-13 02:58:03,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:58:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588277767] [2024-09-13 02:58:03,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588277767] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:58:03,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688286930] [2024-09-13 02:58:03,694 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 02:58:03,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:58:03,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:58:03,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 02:58:03,696 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 02:58:03,736 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 02:58:03,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:58:03,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-13 02:58:03,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:58:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 20 proven. 100 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-13 02:58:05,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:01:10,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688286930] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:01:10,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 03:01:10,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23] total 35 [2024-09-13 03:01:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753461724] [2024-09-13 03:01:10,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 03:01:10,662 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-13 03:01:10,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:01:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-13 03:01:10,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=2147, Unknown=2, NotChecked=0, Total=2450 [2024-09-13 03:01:10,663 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 16 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2024-09-13 03:01:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:01:12,909 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2024-09-13 03:01:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 03:01:12,910 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 16 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) Word has length 81 [2024-09-13 03:01:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:01:12,910 INFO L225 Difference]: With dead ends: 78 [2024-09-13 03:01:12,910 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 03:01:12,911 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 90.4s TimeCoverageRelationStatistics Valid=565, Invalid=3339, Unknown=2, NotChecked=0, Total=3906 [2024-09-13 03:01:12,911 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-13 03:01:12,911 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 362 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-13 03:01:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 03:01:12,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 03:01:12,912 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) [2024-09-13 03:01:12,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 03:01:12,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2024-09-13 03:01:12,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:01:12,912 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 03:01:12,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 16 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 16 states have call predecessors, (18), 14 states have call successors, (18) [2024-09-13 03:01:12,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:01:12,913 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 03:01:12,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 03:01:12,915 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 03:01:12,927 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 03:01:13,118 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-13 03:01:13,121 INFO L408 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1] [2024-09-13 03:01:13,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 03:01:19,705 WARN L293 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 376 DAG size of output: 18 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:01:27,685 WARN L293 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 376 DAG size of output: 18 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:01:33,038 WARN L293 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 386 DAG size of output: 18 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:01:38,799 WARN L293 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 389 DAG size of output: 20 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:01:40,807 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 03:01:40,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 03:01:40 BoogieIcfgContainer [2024-09-13 03:01:40,819 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 03:01:40,820 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 03:01:40,820 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 03:01:40,820 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 03:01:40,820 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:56:58" (3/4) ... [2024-09-13 03:01:40,822 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 03:01:40,824 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 03:01:40,824 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 03:01:40,824 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 03:01:40,825 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 03:01:40,827 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-09-13 03:01:40,827 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-09-13 03:01:40,827 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 03:01:40,827 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 03:01:40,897 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 03:01:40,897 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 03:01:40,897 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 03:01:40,897 INFO L158 Benchmark]: Toolchain (without parser) took 282521.29ms. Allocated memory was 186.6MB in the beginning and 325.1MB in the end (delta: 138.4MB). Free memory was 152.4MB in the beginning and 176.6MB in the end (delta: -24.1MB). Peak memory consumption was 113.4MB. Max. memory is 16.1GB. [2024-09-13 03:01:40,898 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:01:40,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.07ms. Allocated memory is still 186.6MB. Free memory was 151.5MB in the beginning and 140.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 03:01:40,898 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.80ms. Allocated memory is still 186.6MB. Free memory was 140.0MB in the beginning and 139.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:01:40,899 INFO L158 Benchmark]: Boogie Preprocessor took 27.98ms. Allocated memory is still 186.6MB. Free memory was 139.0MB in the beginning and 137.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:01:40,899 INFO L158 Benchmark]: RCFGBuilder took 306.90ms. Allocated memory is still 186.6MB. Free memory was 137.9MB in the beginning and 156.0MB in the end (delta: -18.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 03:01:40,899 INFO L158 Benchmark]: TraceAbstraction took 281918.73ms. Allocated memory was 186.6MB in the beginning and 325.1MB in the end (delta: 138.4MB). Free memory was 155.0MB in the beginning and 180.8MB in the end (delta: -25.8MB). Peak memory consumption was 197.6MB. Max. memory is 16.1GB. [2024-09-13 03:01:40,899 INFO L158 Benchmark]: Witness Printer took 77.23ms. Allocated memory is still 325.1MB. Free memory was 180.8MB in the beginning and 176.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 03:01:40,901 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 109.1MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.07ms. Allocated memory is still 186.6MB. Free memory was 151.5MB in the beginning and 140.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.80ms. Allocated memory is still 186.6MB. Free memory was 140.0MB in the beginning and 139.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.98ms. Allocated memory is still 186.6MB. Free memory was 139.0MB in the beginning and 137.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 306.90ms. Allocated memory is still 186.6MB. Free memory was 137.9MB in the beginning and 156.0MB in the end (delta: -18.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 281918.73ms. Allocated memory was 186.6MB in the beginning and 325.1MB in the end (delta: 138.4MB). Free memory was 155.0MB in the beginning and 180.8MB in the end (delta: -25.8MB). Peak memory consumption was 197.6MB. Max. memory is 16.1GB. * Witness Printer took 77.23ms. Allocated memory is still 325.1MB. Free memory was 180.8MB in the beginning and 176.6MB in the end (delta: 4.2MB). 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: 15]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 254.2s, OverallIterations: 12, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 2187 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1891 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2673 IncrementalHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 296 mSDtfsCounter, 2673 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 972 GetRequests, 700 SyntacticMatches, 28 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2250 ImplicationChecksByTransitivity, 122.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=9, InterpolantAutomatonStates: 161, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 39 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 241.0s InterpolantComputationTime, 1134 NumberOfCodeBlocks, 1111 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 846 ConstructedInterpolants, 41 QuantifiedInterpolants, 8074 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1192 ConjunctsInSsa, 289 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 632/968 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((0 <= y) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (a <= 50)) && (0 <= a)) && (b <= 50)) && (1 <= b)) - ProcedureContractResult [Line: 9]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-13 03:01:41,111 WARN L435 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-09-13 03:01:41,181 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 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE