./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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/hard-ll_valuebound10.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d5fb336862157190b75f459fa5ac35efb8ca70e207f909b082fde37cf98e7f7 --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 01:43:10,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 01:43:10,175 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 01:43:10,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 01:43:10,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 01:43:10,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 01:43:10,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 01:43:10,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 01:43:10,210 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 01:43:10,211 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 01:43:10,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 01:43:10,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 01:43:10,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 01:43:10,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 01:43:10,213 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 01:43:10,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 01:43:10,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 01:43:10,216 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 01:43:10,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 01:43:10,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 01:43:10,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 01:43:10,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 01:43:10,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 01:43:10,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 01:43:10,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 01:43:10,218 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 01:43:10,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 01:43:10,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 01:43:10,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 01:43:10,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 01:43:10,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 01:43:10,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 01:43:10,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 01:43:10,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 01:43:10,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 01:43:10,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 01:43:10,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 01:43:10,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 01:43:10,221 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 01:43:10,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 01:43:10,222 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 01:43:10,222 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 01:43:10,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d5fb336862157190b75f459fa5ac35efb8ca70e207f909b082fde37cf98e7f7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 01:43:10,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 01:43:10,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 01:43:10,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 01:43:10,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 01:43:10,459 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 01:43:10,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c [2024-09-13 01:43:11,854 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 01:43:12,026 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 01:43:12,027 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c [2024-09-13 01:43:12,036 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/ac5f7d500/50cb0dc49f774fa193fed911dffe56c4/FLAG0c13d444f [2024-09-13 01:43:12,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/ac5f7d500/50cb0dc49f774fa193fed911dffe56c4 [2024-09-13 01:43:12,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 01:43:12,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 01:43:12,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 01:43:12,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 01:43:12,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 01:43:12,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bc3028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12, skipping insertion in model container [2024-09-13 01:43:12,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 01:43:12,280 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/hard-ll_valuebound10.c[538,551] [2024-09-13 01:43:12,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 01:43:12,331 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 01:43:12,343 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/hard-ll_valuebound10.c[538,551] [2024-09-13 01:43:12,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 01:43:12,377 INFO L204 MainTranslator]: Completed translation [2024-09-13 01:43:12,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12 WrapperNode [2024-09-13 01:43:12,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 01:43:12,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 01:43:12,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 01:43:12,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 01:43:12,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,401 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 01:43:12,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 01:43:12,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 01:43:12,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 01:43:12,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 01:43:12,411 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,430 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 01:43:12,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 01:43:12,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 01:43:12,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 01:43:12,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 01:43:12,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (1/1) ... [2024-09-13 01:43:12,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 01:43:12,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:43:12,478 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 01:43:12,480 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 01:43:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 01:43:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 01:43:12,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 01:43:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 01:43:12,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 01:43:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 01:43:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 01:43:12,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 01:43:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 01:43:12,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 01:43:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 01:43:12,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 01:43:12,586 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 01:43:12,589 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 01:43:12,803 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 01:43:12,804 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 01:43:12,830 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 01:43:12,831 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 01:43:12,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 01:43:12 BoogieIcfgContainer [2024-09-13 01:43:12,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 01:43:12,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 01:43:12,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 01:43:12,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 01:43:12,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 01:43:12" (1/3) ... [2024-09-13 01:43:12,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31442dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 01:43:12, skipping insertion in model container [2024-09-13 01:43:12,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:43:12" (2/3) ... [2024-09-13 01:43:12,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31442dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 01:43:12, skipping insertion in model container [2024-09-13 01:43:12,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 01:43:12" (3/3) ... [2024-09-13 01:43:12,841 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound10.c [2024-09-13 01:43:12,857 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 01:43:12,857 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 01:43:12,916 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 01:43:12,924 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;@793b81d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 01:43:12,925 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 01:43:12,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-13 01:43:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 01:43:12,937 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:12,938 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 01:43:12,938 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:12,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash 367441184, now seen corresponding path program 1 times [2024-09-13 01:43:12,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:12,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325663268] [2024-09-13 01:43:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:43:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:43:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:43:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:43:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,125 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 01:43:13,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:13,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325663268] [2024-09-13 01:43:13,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325663268] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:43:13,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 01:43:13,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 01:43:13,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826502052] [2024-09-13 01:43:13,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:43:13,131 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 01:43:13,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:13,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 01:43:13,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 01:43:13,150 INFO L87 Difference]: Start difference. First operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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 01:43:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:13,175 INFO L93 Difference]: Finished difference Result 66 states and 107 transitions. [2024-09-13 01:43:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 01:43:13,178 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 01:43:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:13,184 INFO L225 Difference]: With dead ends: 66 [2024-09-13 01:43:13,184 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 01:43:13,187 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 01:43:13,190 INFO L434 NwaCegarLoop]: 44 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, 44 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 01:43:13,193 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 01:43:13,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 01:43:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-13 01:43:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 01:43:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-09-13 01:43:13,233 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 27 [2024-09-13 01:43:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:13,233 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-09-13 01:43:13,233 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 01:43:13,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-09-13 01:43:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 01:43:13,235 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:13,235 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 01:43:13,236 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 01:43:13,236 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:13,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:13,236 INFO L85 PathProgramCache]: Analyzing trace with hash -781266146, now seen corresponding path program 1 times [2024-09-13 01:43:13,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:13,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500083509] [2024-09-13 01:43:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:13,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:43:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:43:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:43:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:43:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,473 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 01:43:13,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:13,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500083509] [2024-09-13 01:43:13,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500083509] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:43:13,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 01:43:13,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 01:43:13,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780212728] [2024-09-13 01:43:13,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:43:13,476 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:43:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:43:13,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:43:13,478 INFO L87 Difference]: Start difference. First operand 32 states and 42 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 01:43:13,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:13,567 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2024-09-13 01:43:13,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:43:13,569 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 01:43:13,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:13,570 INFO L225 Difference]: With dead ends: 45 [2024-09-13 01:43:13,570 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 01:43:13,571 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 01:43:13,574 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:13,575 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 134 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 01:43:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 01:43:13,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2024-09-13 01:43:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 01:43:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-09-13 01:43:13,585 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 27 [2024-09-13 01:43:13,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:13,586 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-09-13 01:43:13,586 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 01:43:13,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-09-13 01:43:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 01:43:13,587 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:13,587 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] [2024-09-13 01:43:13,588 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 01:43:13,588 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:13,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash 992341126, now seen corresponding path program 1 times [2024-09-13 01:43:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:13,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946834917] [2024-09-13 01:43:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:13,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:43:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:43:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:43:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:43:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:43:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 01:43:13,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:13,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946834917] [2024-09-13 01:43:13,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946834917] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:43:13,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 01:43:13,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 01:43:13,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345030887] [2024-09-13 01:43:13,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:43:13,770 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:43:13,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:43:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:43:13,773 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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 01:43:13,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:13,866 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-09-13 01:43:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:43:13,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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 32 [2024-09-13 01:43:13,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:13,870 INFO L225 Difference]: With dead ends: 49 [2024-09-13 01:43:13,870 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 01:43:13,870 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 01:43:13,873 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:13,873 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 131 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 01:43:13,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 01:43:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-13 01:43:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 01:43:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-09-13 01:43:13,894 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 32 [2024-09-13 01:43:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:13,894 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-09-13 01:43:13,895 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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 01:43:13,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-09-13 01:43:13,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-13 01:43:13,897 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:13,898 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 01:43:13,898 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 01:43:13,898 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:13,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:13,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1500804130, now seen corresponding path program 1 times [2024-09-13 01:43:13,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:13,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215186121] [2024-09-13 01:43:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:13,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:43:13,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35948014] [2024-09-13 01:43:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:13,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:13,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:43:13,935 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 01:43:13,937 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 01:43:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:14,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 01:43:14,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:43:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 01:43:14,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 01:43:14,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215186121] [2024-09-13 01:43:14,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:43:14,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35948014] [2024-09-13 01:43:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35948014] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:43:14,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 01:43:14,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 01:43:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674846932] [2024-09-13 01:43:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:43:14,111 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:43:14,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:43:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:43:14,112 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 01:43:14,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:14,185 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2024-09-13 01:43:14,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:43:14,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2024-09-13 01:43:14,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:14,187 INFO L225 Difference]: With dead ends: 66 [2024-09-13 01:43:14,188 INFO L226 Difference]: Without dead ends: 53 [2024-09-13 01:43:14,189 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 01:43:14,190 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:14,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 132 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 01:43:14,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-13 01:43:14,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-09-13 01:43:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-13 01:43:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2024-09-13 01:43:14,217 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 37 [2024-09-13 01:43:14,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:14,218 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2024-09-13 01:43:14,218 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 01:43:14,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:14,218 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2024-09-13 01:43:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-13 01:43:14,219 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:14,219 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 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 01:43:14,238 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 01:43:14,420 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:14,420 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:14,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:14,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1357220557, now seen corresponding path program 1 times [2024-09-13 01:43:14,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:14,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051969961] [2024-09-13 01:43:14,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:14,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:43:14,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926252424] [2024-09-13 01:43:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:14,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:14,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:43:14,446 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 01:43:14,452 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 01:43:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:14,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-13 01:43:14,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:43:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-13 01:43:14,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:43:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-13 01:43:14,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:14,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051969961] [2024-09-13 01:43:14,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:43:14,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926252424] [2024-09-13 01:43:14,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926252424] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:43:14,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 01:43:14,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-13 01:43:14,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337456103] [2024-09-13 01:43:14,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 01:43:14,812 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 01:43:14,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:14,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 01:43:14,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-13 01:43:14,815 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 01:43:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:14,962 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2024-09-13 01:43:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 01:43:14,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 44 [2024-09-13 01:43:14,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:14,965 INFO L225 Difference]: With dead ends: 68 [2024-09-13 01:43:14,966 INFO L226 Difference]: Without dead ends: 66 [2024-09-13 01:43:14,967 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-13 01:43:14,968 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:14,969 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 147 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 01:43:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-13 01:43:14,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2024-09-13 01:43:14,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 01:43:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2024-09-13 01:43:14,989 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 44 [2024-09-13 01:43:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:14,989 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2024-09-13 01:43:14,990 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 01:43:14,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2024-09-13 01:43:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-13 01:43:14,991 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:14,991 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:43:15,012 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 01:43:15,191 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:15,192 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:15,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1728018148, now seen corresponding path program 1 times [2024-09-13 01:43:15,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:15,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101611896] [2024-09-13 01:43:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:15,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:43:15,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481248572] [2024-09-13 01:43:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:15,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:15,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:43:15,227 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 01:43:15,228 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 01:43:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 01:43:15,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:43:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 01:43:15,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:43:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-13 01:43:15,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:15,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101611896] [2024-09-13 01:43:15,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:43:15,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481248572] [2024-09-13 01:43:15,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481248572] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 01:43:15,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 01:43:15,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-13 01:43:15,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120346329] [2024-09-13 01:43:15,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:43:15,442 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:43:15,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:15,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:43:15,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 01:43:15,443 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 01:43:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:15,545 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-09-13 01:43:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:43:15,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2024-09-13 01:43:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:15,546 INFO L225 Difference]: With dead ends: 73 [2024-09-13 01:43:15,546 INFO L226 Difference]: Without dead ends: 71 [2024-09-13 01:43:15,547 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-13 01:43:15,547 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:15,548 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 125 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 01:43:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-13 01:43:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-09-13 01:43:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-13 01:43:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2024-09-13 01:43:15,566 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 54 [2024-09-13 01:43:15,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:15,566 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2024-09-13 01:43:15,567 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 01:43:15,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:15,567 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2024-09-13 01:43:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-13 01:43:15,569 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:15,569 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:15,588 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 01:43:15,772 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 01:43:15,773 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:15,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:15,773 INFO L85 PathProgramCache]: Analyzing trace with hash 515743006, now seen corresponding path program 1 times [2024-09-13 01:43:15,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:15,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620614381] [2024-09-13 01:43:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:15,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:43:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:43:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:43:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:43:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:43:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:43:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:43:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:43:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:43:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 01:43:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-13 01:43:15,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:15,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620614381] [2024-09-13 01:43:15,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620614381] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:43:15,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 01:43:15,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 01:43:15,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047574414] [2024-09-13 01:43:15,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:43:15,922 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:43:15,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:15,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:43:15,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:43:15,923 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-13 01:43:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:16,014 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-09-13 01:43:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:43:16,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2024-09-13 01:43:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:16,018 INFO L225 Difference]: With dead ends: 78 [2024-09-13 01:43:16,018 INFO L226 Difference]: Without dead ends: 66 [2024-09-13 01:43:16,019 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 01:43:16,019 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:16,019 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 01:43:16,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-13 01:43:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-13 01:43:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 01:43:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2024-09-13 01:43:16,044 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 60 [2024-09-13 01:43:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:16,045 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2024-09-13 01:43:16,045 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-13 01:43:16,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2024-09-13 01:43:16,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-13 01:43:16,047 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:16,047 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1] [2024-09-13 01:43:16,048 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 01:43:16,049 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:16,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:16,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1452252536, now seen corresponding path program 1 times [2024-09-13 01:43:16,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:16,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209964802] [2024-09-13 01:43:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:16,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:43:16,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079149836] [2024-09-13 01:43:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:16,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:16,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:43:16,092 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 01:43:16,094 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 01:43:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:16,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-13 01:43:16,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:43:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-09-13 01:43:16,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:43:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-13 01:43:18,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:18,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209964802] [2024-09-13 01:43:18,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:43:18,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079149836] [2024-09-13 01:43:18,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079149836] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:43:18,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 01:43:18,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-09-13 01:43:18,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800152220] [2024-09-13 01:43:18,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 01:43:18,374 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 01:43:18,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 01:43:18,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-09-13 01:43:18,376 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2024-09-13 01:43:19,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:19,590 INFO L93 Difference]: Finished difference Result 153 states and 210 transitions. [2024-09-13 01:43:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 01:43:19,590 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) Word has length 74 [2024-09-13 01:43:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:19,593 INFO L225 Difference]: With dead ends: 153 [2024-09-13 01:43:19,593 INFO L226 Difference]: Without dead ends: 130 [2024-09-13 01:43:19,594 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2024-09-13 01:43:19,596 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 79 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:19,596 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 256 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 01:43:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-13 01:43:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2024-09-13 01:43:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.180327868852459) internal successors, (72), 65 states have internal predecessors, (72), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-13 01:43:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 132 transitions. [2024-09-13 01:43:19,654 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 132 transitions. Word has length 74 [2024-09-13 01:43:19,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:19,654 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 132 transitions. [2024-09-13 01:43:19,655 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2024-09-13 01:43:19,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:19,655 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 132 transitions. [2024-09-13 01:43:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-13 01:43:19,658 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:19,658 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:43:19,675 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 01:43:19,862 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:19,863 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:19,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1571705391, now seen corresponding path program 1 times [2024-09-13 01:43:19,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:19,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284036498] [2024-09-13 01:43:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:19,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:43:19,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816623134] [2024-09-13 01:43:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:19,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:19,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:43:19,906 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 01:43:19,908 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 01:43:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:19,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-13 01:43:19,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:43:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-13 01:43:20,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:43:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-13 01:43:21,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284036498] [2024-09-13 01:43:21,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:43:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816623134] [2024-09-13 01:43:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816623134] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:43:21,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 01:43:21,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-09-13 01:43:21,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88039096] [2024-09-13 01:43:21,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 01:43:21,063 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 01:43:21,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:21,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 01:43:21,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-09-13 01:43:21,065 INFO L87 Difference]: Start difference. First operand 105 states and 132 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-13 01:43:21,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:21,564 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2024-09-13 01:43:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 01:43:21,565 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) Word has length 85 [2024-09-13 01:43:21,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:21,567 INFO L225 Difference]: With dead ends: 145 [2024-09-13 01:43:21,567 INFO L226 Difference]: Without dead ends: 111 [2024-09-13 01:43:21,568 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-09-13 01:43:21,568 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 25 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:21,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 414 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 01:43:21,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-13 01:43:21,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2024-09-13 01:43:21,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 27 states have call successors, (27), 13 states have call predecessors, (27), 12 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-13 01:43:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 118 transitions. [2024-09-13 01:43:21,604 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 118 transitions. Word has length 85 [2024-09-13 01:43:21,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:21,604 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 118 transitions. [2024-09-13 01:43:21,604 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-13 01:43:21,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:21,605 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 118 transitions. [2024-09-13 01:43:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-13 01:43:21,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:21,606 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:43:21,623 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 01:43:21,810 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:21,811 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:21,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1973508941, now seen corresponding path program 2 times [2024-09-13 01:43:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939039764] [2024-09-13 01:43:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:21,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:21,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:43:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:21,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:43:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:21,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:43:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:21,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:43:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:21,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:43:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:21,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:43:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:21,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:43:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:43:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:43:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 01:43:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 01:43:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 01:43:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-13 01:43:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-13 01:43:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-13 01:43:22,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939039764] [2024-09-13 01:43:22,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939039764] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:43:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228914052] [2024-09-13 01:43:22,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 01:43:22,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:22,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:43:22,059 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 01:43:22,061 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 01:43:22,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 01:43:22,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 01:43:22,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 01:43:22,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:43:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-13 01:43:22,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:43:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-13 01:43:22,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228914052] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:43:22,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 01:43:22,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-09-13 01:43:22,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129457858] [2024-09-13 01:43:22,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 01:43:22,238 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:43:22,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:22,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:43:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:43:22,239 INFO L87 Difference]: Start difference. First operand 97 states and 118 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-09-13 01:43:22,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:22,315 INFO L93 Difference]: Finished difference Result 124 states and 155 transitions. [2024-09-13 01:43:22,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 01:43:22,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 87 [2024-09-13 01:43:22,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:22,318 INFO L225 Difference]: With dead ends: 124 [2024-09-13 01:43:22,318 INFO L226 Difference]: Without dead ends: 102 [2024-09-13 01:43:22,319 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:43:22,321 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:22,322 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 01:43:22,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-13 01:43:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-09-13 01:43:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-13 01:43:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2024-09-13 01:43:22,374 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 87 [2024-09-13 01:43:22,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:22,375 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2024-09-13 01:43:22,375 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-09-13 01:43:22,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2024-09-13 01:43:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-13 01:43:22,377 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:22,377 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:43:22,394 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 01:43:22,577 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 01:43:22,578 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:22,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash -637517709, now seen corresponding path program 1 times [2024-09-13 01:43:22,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:22,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699124636] [2024-09-13 01:43:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:43:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:43:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:43:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:43:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:43:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:43:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:43:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:43:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:43:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 01:43:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 01:43:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 01:43:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-13 01:43:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-13 01:43:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-13 01:43:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 01:43:22,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:22,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699124636] [2024-09-13 01:43:22,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699124636] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:43:22,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687068953] [2024-09-13 01:43:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:22,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:22,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:43:22,888 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 01:43:22,889 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 01:43:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:22,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 01:43:22,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:43:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-09-13 01:43:23,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:43:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 01:43:23,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687068953] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:43:23,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 01:43:23,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 18 [2024-09-13 01:43:23,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551166122] [2024-09-13 01:43:23,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 01:43:23,668 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 01:43:23,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:23,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 01:43:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-13 01:43:23,669 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) [2024-09-13 01:43:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:24,019 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2024-09-13 01:43:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 01:43:24,019 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) Word has length 90 [2024-09-13 01:43:24,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:24,021 INFO L225 Difference]: With dead ends: 117 [2024-09-13 01:43:24,021 INFO L226 Difference]: Without dead ends: 100 [2024-09-13 01:43:24,023 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-09-13 01:43:24,024 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:24,024 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 384 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 01:43:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-13 01:43:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2024-09-13 01:43:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 57 states have internal predecessors, (63), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-13 01:43:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2024-09-13 01:43:24,061 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 90 [2024-09-13 01:43:24,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:24,061 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2024-09-13 01:43:24,061 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) [2024-09-13 01:43:24,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2024-09-13 01:43:24,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-09-13 01:43:24,063 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:24,063 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-09-13 01:43:24,079 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 01:43:24,263 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:24,264 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:24,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1204328542, now seen corresponding path program 1 times [2024-09-13 01:43:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:24,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421498904] [2024-09-13 01:43:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:24,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:43:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:43:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:43:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:43:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:43:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:43:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:43:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:43:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:43:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 01:43:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 01:43:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 01:43:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-13 01:43:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 01:43:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 01:43:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-13 01:43:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-13 01:43:24,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:43:24,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421498904] [2024-09-13 01:43:24,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421498904] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:43:24,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695379939] [2024-09-13 01:43:24,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:24,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:24,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:43:24,381 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 01:43:24,383 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 01:43:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:43:24,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-13 01:43:24,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:43:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-09-13 01:43:24,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 01:43:24,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695379939] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:43:24,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 01:43:24,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-09-13 01:43:24,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797008368] [2024-09-13 01:43:24,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:43:24,478 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:43:24,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:43:24,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:43:24,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-13 01:43:24,479 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-09-13 01:43:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:43:24,550 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2024-09-13 01:43:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:43:24,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 94 [2024-09-13 01:43:24,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:43:24,553 INFO L225 Difference]: With dead ends: 100 [2024-09-13 01:43:24,553 INFO L226 Difference]: Without dead ends: 88 [2024-09-13 01:43:24,553 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-13 01:43:24,554 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 01:43:24,554 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 122 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 01:43:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-13 01:43:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-13 01:43:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 24 states have call successors, (24), 12 states have call predecessors, (24), 11 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-13 01:43:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2024-09-13 01:43:24,595 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 94 [2024-09-13 01:43:24,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:43:24,595 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2024-09-13 01:43:24,595 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-09-13 01:43:24,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2024-09-13 01:43:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-13 01:43:24,598 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:43:24,598 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:43:24,614 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 01:43:24,798 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:24,798 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:43:24,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:43:24,799 INFO L85 PathProgramCache]: Analyzing trace with hash -588826413, now seen corresponding path program 3 times [2024-09-13 01:43:24,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:43:24,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999491400] [2024-09-13 01:43:24,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:43:24,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:43:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:43:24,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796151697] [2024-09-13 01:43:24,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 01:43:24,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:43:24,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:43:24,849 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 01:43:24,851 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 01:43:24,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 01:43:24,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 01:43:25,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-09-13 01:43:25,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:43:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 78 proven. 44 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-09-13 01:43:25,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:43:39,540 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 01:44:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 61 proven. 25 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-09-13 01:44:53,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:44:53,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999491400] [2024-09-13 01:44:53,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:44:53,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796151697] [2024-09-13 01:44:53,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796151697] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:44:53,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 01:44:53,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2024-09-13 01:44:53,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052639501] [2024-09-13 01:44:53,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 01:44:53,680 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-13 01:44:53,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:44:53,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-13 01:44:53,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-09-13 01:44:53,681 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 20 states have internal predecessors, (50), 10 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 10 states have call predecessors, (31), 8 states have call successors, (31) [2024-09-13 01:45:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:45:15,084 INFO L93 Difference]: Finished difference Result 179 states and 239 transitions. [2024-09-13 01:45:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-13 01:45:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 20 states have internal predecessors, (50), 10 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 10 states have call predecessors, (31), 8 states have call successors, (31) Word has length 104 [2024-09-13 01:45:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:45:15,086 INFO L225 Difference]: With dead ends: 179 [2024-09-13 01:45:15,086 INFO L226 Difference]: Without dead ends: 157 [2024-09-13 01:45:15,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=283, Invalid=1199, Unknown=0, NotChecked=0, Total=1482 [2024-09-13 01:45:15,087 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 74 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-09-13 01:45:15,087 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 550 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-09-13 01:45:15,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-09-13 01:45:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2024-09-13 01:45:15,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 87 states have internal predecessors, (95), 43 states have call successors, (43), 15 states have call predecessors, (43), 14 states have return successors, (41), 37 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-13 01:45:15,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 179 transitions. [2024-09-13 01:45:15,150 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 179 transitions. Word has length 104 [2024-09-13 01:45:15,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:45:15,151 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 179 transitions. [2024-09-13 01:45:15,151 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 20 states have internal predecessors, (50), 10 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (31), 10 states have call predecessors, (31), 8 states have call successors, (31) [2024-09-13 01:45:15,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:45:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 179 transitions. [2024-09-13 01:45:15,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-09-13 01:45:15,153 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:45:15,153 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:45:15,161 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 01:45:15,353 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-13 01:45:15,353 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:45:15,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:45:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1973122394, now seen corresponding path program 2 times [2024-09-13 01:45:15,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:45:15,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118581970] [2024-09-13 01:45:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:45:15,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:45:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:45:15,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444159394] [2024-09-13 01:45:15,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 01:45:15,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:45:15,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:45:15,415 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 01:45:15,415 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 01:45:15,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 01:45:15,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 01:45:15,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-13 01:45:15,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:45:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 124 proven. 22 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-09-13 01:45:15,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:45:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-13 01:45:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:45:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118581970] [2024-09-13 01:45:15,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:45:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444159394] [2024-09-13 01:45:15,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444159394] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:45:15,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 01:45:15,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2024-09-13 01:45:15,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685292585] [2024-09-13 01:45:15,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 01:45:15,768 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-13 01:45:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:45:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-13 01:45:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-09-13 01:45:15,769 INFO L87 Difference]: Start difference. First operand 140 states and 179 transitions. Second operand has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-13 01:45:16,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:45:16,351 INFO L93 Difference]: Finished difference Result 156 states and 193 transitions. [2024-09-13 01:45:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 01:45:16,352 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 115 [2024-09-13 01:45:16,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:45:16,353 INFO L225 Difference]: With dead ends: 156 [2024-09-13 01:45:16,353 INFO L226 Difference]: Without dead ends: 154 [2024-09-13 01:45:16,354 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-09-13 01:45:16,354 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 01:45:16,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 266 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 01:45:16,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-09-13 01:45:16,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-09-13 01:45:16,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 92 states have (on average 1.141304347826087) internal successors, (105), 98 states have internal predecessors, (105), 44 states have call successors, (44), 18 states have call predecessors, (44), 17 states have return successors, (42), 37 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-13 01:45:16,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 191 transitions. [2024-09-13 01:45:16,438 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 191 transitions. Word has length 115 [2024-09-13 01:45:16,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:45:16,439 INFO L474 AbstractCegarLoop]: Abstraction has 154 states and 191 transitions. [2024-09-13 01:45:16,439 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-13 01:45:16,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:45:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 191 transitions. [2024-09-13 01:45:16,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-13 01:45:16,440 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:45:16,441 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:45:16,458 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 01:45:16,644 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 01:45:16,644 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:45:16,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:45:16,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1536141598, now seen corresponding path program 4 times [2024-09-13 01:45:16,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:45:16,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915237649] [2024-09-13 01:45:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:45:16,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:45:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:45:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:45:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:45:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:45:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:45:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:45:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:45:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:45:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:45:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 01:45:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 01:45:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 01:45:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-13 01:45:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 01:45:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 01:45:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-13 01:45:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-13 01:45:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-13 01:45:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-13 01:45:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-09-13 01:45:16,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:45:16,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915237649] [2024-09-13 01:45:16,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915237649] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:45:16,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293341622] [2024-09-13 01:45:16,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 01:45:16,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:45:16,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:45:16,978 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 01:45:16,980 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 01:45:17,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 01:45:17,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 01:45:17,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 01:45:17,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:45:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-09-13 01:45:17,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:45:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-09-13 01:45:17,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293341622] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:45:17,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 01:45:17,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-09-13 01:45:17,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759517505] [2024-09-13 01:45:17,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 01:45:17,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 01:45:17,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:45:17,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 01:45:17,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 01:45:17,256 INFO L87 Difference]: Start difference. First operand 154 states and 191 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2024-09-13 01:45:17,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:45:17,401 INFO L93 Difference]: Finished difference Result 184 states and 225 transitions. [2024-09-13 01:45:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:45:17,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 117 [2024-09-13 01:45:17,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:45:17,403 INFO L225 Difference]: With dead ends: 184 [2024-09-13 01:45:17,403 INFO L226 Difference]: Without dead ends: 144 [2024-09-13 01:45:17,404 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 01:45:17,404 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 1 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 01:45:17,404 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 273 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 01:45:17,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-13 01:45:17,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2024-09-13 01:45:17,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 85 states have (on average 1.1058823529411765) internal successors, (94), 90 states have internal predecessors, (94), 39 states have call successors, (39), 18 states have call predecessors, (39), 17 states have return successors, (37), 33 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-13 01:45:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 170 transitions. [2024-09-13 01:45:17,463 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 170 transitions. Word has length 117 [2024-09-13 01:45:17,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:45:17,464 INFO L474 AbstractCegarLoop]: Abstraction has 142 states and 170 transitions. [2024-09-13 01:45:17,464 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 7 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2024-09-13 01:45:17,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:45:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 170 transitions. [2024-09-13 01:45:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-13 01:45:17,465 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:45:17,466 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-09-13 01:45:17,484 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-13 01:45:17,666 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 01:45:17,666 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:45:17,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:45:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash 47128766, now seen corresponding path program 2 times [2024-09-13 01:45:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:45:17,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786219387] [2024-09-13 01:45:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:45:17,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:45:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:45:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:45:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:45:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:45:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:45:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:45:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:45:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:45:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:45:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 01:45:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 01:45:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 01:45:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-13 01:45:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 01:45:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 01:45:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-13 01:45:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-13 01:45:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-13 01:45:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-13 01:45:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-13 01:45:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:45:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-09-13 01:45:18,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:45:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786219387] [2024-09-13 01:45:18,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786219387] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:45:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656947589] [2024-09-13 01:45:18,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 01:45:18,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:45:18,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:45:18,137 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 01:45:18,138 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 01:45:18,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 01:45:18,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 01:45:18,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-13 01:45:18,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:45:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-09-13 01:45:18,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:45:19,684 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-09-13 01:45:19,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656947589] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:45:19,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 01:45:19,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 14] total 30 [2024-09-13 01:45:19,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054069936] [2024-09-13 01:45:19,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 01:45:19,685 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-13 01:45:19,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:45:19,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-13 01:45:19,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-09-13 01:45:19,686 INFO L87 Difference]: Start difference. First operand 142 states and 170 transitions. Second operand has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 19 states have call predecessors, (49), 19 states have call successors, (49) [2024-09-13 01:45:20,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:45:20,413 INFO L93 Difference]: Finished difference Result 158 states and 191 transitions. [2024-09-13 01:45:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 01:45:20,414 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 19 states have call predecessors, (49), 19 states have call successors, (49) Word has length 120 [2024-09-13 01:45:20,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:45:20,415 INFO L225 Difference]: With dead ends: 158 [2024-09-13 01:45:20,415 INFO L226 Difference]: Without dead ends: 130 [2024-09-13 01:45:20,416 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2024-09-13 01:45:20,416 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 23 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 01:45:20,416 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 564 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 01:45:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-13 01:45:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2024-09-13 01:45:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 80 states have internal predecessors, (83), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-13 01:45:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2024-09-13 01:45:20,451 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 120 [2024-09-13 01:45:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:45:20,451 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2024-09-13 01:45:20,452 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.066666666666667) internal successors, (62), 27 states have internal predecessors, (62), 19 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 19 states have call predecessors, (49), 19 states have call successors, (49) [2024-09-13 01:45:20,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:45:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2024-09-13 01:45:20,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-13 01:45:20,453 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:45:20,453 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:45:20,467 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-13 01:45:20,653 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-13 01:45:20,653 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:45:20,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:45:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1414642200, now seen corresponding path program 5 times [2024-09-13 01:45:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:45:20,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93043150] [2024-09-13 01:45:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:45:20,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:45:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:45:20,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560262582] [2024-09-13 01:45:20,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 01:45:20,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:45:20,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:45:20,719 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 01:45:20,721 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-13 01:45:20,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-13 01:45:20,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 01:45:20,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-13 01:45:20,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:45:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 82 proven. 101 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2024-09-13 01:45:21,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:45:41,081 WARN L293 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 120 DAG size of output: 120 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 01:46:13,490 WARN L293 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 253 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 01:46:53,550 WARN L293 SmtUtils]: Spent 6.80s on a formula simplification that was a NOOP. DAG size: 255 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 01:47:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 98 proven. 105 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2024-09-13 01:47:37,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:47:37,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93043150] [2024-09-13 01:47:37,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:47:37,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560262582] [2024-09-13 01:47:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560262582] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:47:37,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 01:47:37,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 35 [2024-09-13 01:47:37,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415883295] [2024-09-13 01:47:37,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 01:47:37,699 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-13 01:47:37,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:47:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-13 01:47:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 01:47:37,700 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand has 35 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 31 states have internal predecessors, (60), 19 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (40), 15 states have call predecessors, (40), 17 states have call successors, (40) [2024-09-13 01:47:46,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 01:47:48,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 01:47:51,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 01:47:55,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 01:47:57,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 01:48:00,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 01:48:20,950 WARN L293 SmtUtils]: Spent 13.99s on a formula simplification. DAG size of input: 444 DAG size of output: 43 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 01:48:24,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 01:48:30,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 01:48:32,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 01:48:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:48:34,286 INFO L93 Difference]: Finished difference Result 150 states and 175 transitions. [2024-09-13 01:48:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 01:48:34,287 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 31 states have internal predecessors, (60), 19 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (40), 15 states have call predecessors, (40), 17 states have call successors, (40) Word has length 134 [2024-09-13 01:48:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:48:34,288 INFO L225 Difference]: With dead ends: 150 [2024-09-13 01:48:34,288 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 01:48:34,288 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=240, Invalid=1165, Unknown=1, NotChecked=0, Total=1406 [2024-09-13 01:48:34,289 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 44 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 83 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2024-09-13 01:48:34,289 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 527 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 399 Invalid, 2 Unknown, 0 Unchecked, 30.5s Time] [2024-09-13 01:48:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 01:48:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 01:48:34,290 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 01:48:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 01:48:34,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-13 01:48:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:48:34,290 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 01:48:34,291 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 31 states have internal predecessors, (60), 19 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (40), 15 states have call predecessors, (40), 17 states have call successors, (40) [2024-09-13 01:48:34,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:48:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 01:48:34,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 01:48:34,294 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 01:48:34,307 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-13 01:48:34,495 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-13 01:48:34,498 INFO L408 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:48:34,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 01:48:40,900 WARN L293 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 155 DAG size of output: 105 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 01:48:49,129 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 123 DAG size of output: 85 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 01:49:00,077 WARN L293 SmtUtils]: Spent 10.94s on a formula simplification. DAG size of input: 123 DAG size of output: 85 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 01:49:08,369 WARN L293 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 123 DAG size of output: 85 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 01:49:25,948 WARN L293 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 123 DAG size of output: 85 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 01:49:33,821 WARN L293 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 123 DAG size of output: 85 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 01:49:33,825 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 01:49:33,842 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 01:49:33,860 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 01:49:33,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 01:49:33 BoogieIcfgContainer [2024-09-13 01:49:33,868 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 01:49:33,869 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 01:49:33,869 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 01:49:33,869 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 01:49:33,870 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 01:43:12" (3/4) ... [2024-09-13 01:49:33,871 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 01:49:33,874 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 01:49:33,875 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 01:49:33,875 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 01:49:33,875 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 01:49:33,878 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-09-13 01:49:33,879 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-09-13 01:49:33,879 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 01:49:33,879 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 01:49:33,965 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 01:49:33,965 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 01:49:33,966 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 01:49:33,966 INFO L158 Benchmark]: Toolchain (without parser) took 381906.61ms. Allocated memory was 159.4MB in the beginning and 352.3MB in the end (delta: 192.9MB). Free memory was 92.2MB in the beginning and 241.9MB in the end (delta: -149.7MB). Peak memory consumption was 43.5MB. Max. memory is 16.1GB. [2024-09-13 01:49:33,966 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 01:49:33,967 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.10ms. Allocated memory is still 159.4MB. Free memory was 91.8MB in the beginning and 129.8MB in the end (delta: -37.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 01:49:33,967 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.20ms. Allocated memory is still 159.4MB. Free memory was 129.8MB in the beginning and 128.8MB in the end (delta: 987.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 01:49:33,967 INFO L158 Benchmark]: Boogie Preprocessor took 41.35ms. Allocated memory is still 159.4MB. Free memory was 128.8MB in the beginning and 126.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 01:49:33,967 INFO L158 Benchmark]: RCFGBuilder took 387.53ms. Allocated memory is still 159.4MB. Free memory was 126.8MB in the beginning and 113.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 01:49:33,968 INFO L158 Benchmark]: TraceAbstraction took 381034.04ms. Allocated memory was 159.4MB in the beginning and 352.3MB in the end (delta: 192.9MB). Free memory was 112.1MB in the beginning and 247.1MB in the end (delta: -135.0MB). Peak memory consumption was 196.2MB. Max. memory is 16.1GB. [2024-09-13 01:49:33,968 INFO L158 Benchmark]: Witness Printer took 96.65ms. Allocated memory is still 352.3MB. Free memory was 247.1MB in the beginning and 241.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 01:49:33,969 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.10ms. Allocated memory is still 159.4MB. Free memory was 91.8MB in the beginning and 129.8MB in the end (delta: -37.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.20ms. Allocated memory is still 159.4MB. Free memory was 129.8MB in the beginning and 128.8MB in the end (delta: 987.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.35ms. Allocated memory is still 159.4MB. Free memory was 128.8MB in the beginning and 126.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 387.53ms. Allocated memory is still 159.4MB. Free memory was 126.8MB in the beginning and 113.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 381034.04ms. Allocated memory was 159.4MB in the beginning and 352.3MB in the end (delta: 192.9MB). Free memory was 112.1MB in the beginning and 247.1MB in the end (delta: -135.0MB). Peak memory consumption was 196.2MB. Max. memory is 16.1GB. * Witness Printer took 96.65ms. Allocated memory is still 352.3MB. Free memory was 247.1MB in the beginning and 241.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 321.6s, OverallIterations: 17, TraceHistogramMax: 19, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 82.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 396 SdHoareTripleChecker+Valid, 36.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 348 mSDsluCounter, 4331 SdHoareTripleChecker+Invalid, 35.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3648 mSDsCounter, 454 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3045 IncrementalHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 454 mSolverCounterUnsat, 683 mSDtfsCounter, 3045 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2497 GetRequests, 2246 SyntacticMatches, 8 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 83.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=14, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 87 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 234.3s InterpolantComputationTime, 2456 NumberOfCodeBlocks, 2429 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 2800 ConstructedInterpolants, 1 QuantifiedInterpolants, 52504 SizeOfPredicates, 29 NumberOfNonLiveVariables, 2497 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 33 InterpolantComputations, 7 PerfectInterpolantSequences, 8836/9467 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: 46]: Loop Invariant Derived loop invariant: (((((((((((((0 <= (r + (((__int128) -1 * d) / 2))) && (((__int128) r + 1) <= d)) && (((A % 4294967296) + d) == (((long long) (B % 4294967296) * 4) + r))) && (q == 0)) && (p == 4)) && (((A % 4294967296) + (d / 2)) == (r + ((long long) 2 * (B % 4294967296))))) || ((((((0 <= r) && (((__int128) r + 1) <= d)) && ((d + r) == (A % 4294967296))) && ((r + ((long long) 2 * (B % 4294967296))) == ((A % 4294967296) + d))) && (q == 1)) && (p == 1))) || ((((((q == 2) && (0 <= r)) && (p == 2)) && (((A % 4294967296) + d) == (((long long) (B % 4294967296) * 4) + r))) && ((A % 4294967296) == (r + ((long long) 2 * (B % 4294967296))))) && (((d + r) + 1) <= ((long long) (B % 4294967296) * 4)))) || (((((((A % 4294967296) == r) && (d == ((long long) 2 * (B % 4294967296)))) && (((__int128) r + 1) <= d)) && (p == 2)) && (q == 0)) && ((B % 4294967296) <= r))) || ((((((((0 <= (r + (((__int128) -1 * d) / 2))) && (d == ((__int128) p * (B % 4294967296)))) && (((__int128) r + 1) <= d)) && ((((__int128) (p / 8) * (B % 4294967296)) + ((__int128) (p / 4) * (B % 4294967296))) == ((((((__int128) (B % 4294967296) * (p / 2)) + r) + ((long long) -1 * (A % 4294967296))) / 4) + (((((__int128) (B % 4294967296) * (p / 2)) + r) + ((long long) -1 * (A % 4294967296))) / 2)))) && (((A % 4294967296) + (d / 2)) == (((__int128) (B % 4294967296) * (p / 2)) + r))) && ((d % 2) == 0)) && (q == 0)) && (((A % 4294967296) + (((__int128) (B % 4294967296) * (p / 2)) / 2)) == (r + ((__int128) (p / 4) * (B % 4294967296)))))) || ((((((q == 2) && ((B % 4294967296) <= 2147483647)) && (((__int128) r + 1) <= (d + (d / 2)))) && (d == (((A % 4294967296) + ((__int128) -1 * r)) / 2))) && ((A % 4294967296) == (r + ((long long) 2 * (B % 4294967296))))) && (p == 1))) || (((((A % 4294967296) == r) && ((d + ((B / 4294967296) * 4294967296)) == B)) && (q == 0)) && (p == 1))) || ((((((((__int128) r + 1) <= (d + (d / 2))) && (q == 3)) && (((A % 4294967296) + d) == (((long long) (B % 4294967296) * 4) + r))) && ((d + ((long long) 2 * (B % 4294967296))) <= 4294967295)) && ((r + ((long long) 3 * (B % 4294967296))) == (A % 4294967296))) && (p == 1))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((((((d < ((__int128) r + 1)) && (d == ((__int128) p * (B % 4294967296)))) && (1 <= (B % 4294967296))) && ((((__int128) (B % 4294967296) * (p / 2)) + ((__int128) (p / 4) * (B % 4294967296))) == ((d / 4) + (d / 2)))) && ((d % 2) == 0)) && (q == 0)) && (((A % 4294967296) + (((__int128) (B % 4294967296) * (p / 2)) / 2)) == (r + ((__int128) (p / 4) * (B % 4294967296))))) && (4 <= p)) || ((((((A % 4294967296) == r) && ((d + ((B / 4294967296) * 4294967296)) == B)) && (q == 0)) && (1 <= d)) && (p == 1))) || (((((((A % 4294967296) == r) && (d == ((long long) 2 * (B % 4294967296)))) && (p == 2)) && (1 <= (B % 4294967296))) && (q == 0)) && ((B % 4294967296) <= r))) || (((((((((0 <= (r + (((__int128) -1 * d) / 2))) && (d == ((__int128) p * (B % 4294967296)))) && ((((__int128) (p / 8) * (B % 4294967296)) + ((__int128) (p / 4) * (B % 4294967296))) == ((((((__int128) (B % 4294967296) * (p / 2)) + r) + ((long long) -1 * (A % 4294967296))) / 4) + (((((__int128) (B % 4294967296) * (p / 2)) + r) + ((long long) -1 * (A % 4294967296))) / 2)))) && (1 <= (B % 4294967296))) && (((A % 4294967296) + (d / 2)) == (((__int128) (B % 4294967296) * (p / 2)) + r))) && ((d % 2) == 0)) && (q == 0)) && (((A % 4294967296) + (((__int128) (B % 4294967296) * (p / 2)) / 2)) == (r + ((__int128) (p / 4) * (B % 4294967296))))) && (4 <= p))) || ((((((0 <= (r + (((__int128) -1 * d) / 2))) && (((A % 4294967296) + d) == (((long long) (B % 4294967296) * 4) + r))) && (1 <= (B % 4294967296))) && (q == 0)) && (p == 4)) && (((A % 4294967296) + (d / 2)) == (r + ((long long) 2 * (B % 4294967296)))))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-13 01:49:34,185 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 01:49:34,238 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