./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/dijkstra-u.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/dijkstra-u.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 b586a178399b4c0df2fdcb66faa06566663e0a18b90a5f0ce0551810014ff769 --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 [2024-09-12 23:03:34,026 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 23:03:34,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 23:03:34,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 23:03:34,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 23:03:34,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 23:03:34,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 23:03:34,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 23:03:34,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 23:03:34,167 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 23:03:34,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 23:03:34,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 23:03:34,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 23:03:34,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 23:03:34,171 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 23:03:34,171 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 23:03:34,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 23:03:34,172 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 23:03:34,172 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 23:03:34,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 23:03:34,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 23:03:34,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 23:03:34,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 23:03:34,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 23:03:34,178 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 23:03:34,178 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 23:03:34,178 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 23:03:34,179 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 23:03:34,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 23:03:34,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 23:03:34,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 23:03:34,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 23:03:34,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 23:03:34,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 23:03:34,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 23:03:34,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 23:03:34,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 23:03:34,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 23:03:34,181 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 23:03:34,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 23:03:34,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 23:03:34,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 23:03:34,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b586a178399b4c0df2fdcb66faa06566663e0a18b90a5f0ce0551810014ff769 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 23:03:34,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 23:03:34,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 23:03:34,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 23:03:34,489 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 23:03:34,489 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 23:03:34,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/dijkstra-u.c [2024-09-12 23:03:35,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 23:03:36,042 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 23:03:36,043 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/dijkstra-u.c [2024-09-12 23:03:36,052 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/80b98e4c6/da177464a89b4601bbca2207654b1b9e/FLAG35f271c01 [2024-09-12 23:03:36,071 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/80b98e4c6/da177464a89b4601bbca2207654b1b9e [2024-09-12 23:03:36,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 23:03:36,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 23:03:36,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 23:03:36,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 23:03:36,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 23:03:36,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5697d89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36, skipping insertion in model container [2024-09-12 23:03:36,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,112 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 23:03:36,285 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/dijkstra-u.c[525,538] [2024-09-12 23:03:36,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 23:03:36,349 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 23:03:36,360 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/dijkstra-u.c[525,538] [2024-09-12 23:03:36,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 23:03:36,391 INFO L204 MainTranslator]: Completed translation [2024-09-12 23:03:36,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36 WrapperNode [2024-09-12 23:03:36,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 23:03:36,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 23:03:36,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 23:03:36,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 23:03:36,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,416 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 23:03:36,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 23:03:36,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 23:03:36,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 23:03:36,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 23:03:36,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,428 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,446 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]. [2024-09-12 23:03:36,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 23:03:36,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 23:03:36,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 23:03:36,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 23:03:36,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (1/1) ... [2024-09-12 23:03:36,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 23:03:36,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:03:36,494 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) [2024-09-12 23:03:36,496 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 [2024-09-12 23:03:36,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 23:03:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 23:03:36,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 23:03:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 23:03:36,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 23:03:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 23:03:36,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 23:03:36,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 23:03:36,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 23:03:36,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 23:03:36,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 23:03:36,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 23:03:36,587 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 23:03:36,589 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 23:03:36,798 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-12 23:03:36,799 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 23:03:36,816 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 23:03:36,816 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 23:03:36,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 11:03:36 BoogieIcfgContainer [2024-09-12 23:03:36,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 23:03:36,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 23:03:36,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 23:03:36,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 23:03:36,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 11:03:36" (1/3) ... [2024-09-12 23:03:36,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc2d61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 11:03:36, skipping insertion in model container [2024-09-12 23:03:36,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:03:36" (2/3) ... [2024-09-12 23:03:36,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc2d61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 11:03:36, skipping insertion in model container [2024-09-12 23:03:36,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 11:03:36" (3/3) ... [2024-09-12 23:03:36,825 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u.c [2024-09-12 23:03:36,841 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 23:03:36,841 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 23:03:36,899 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 23:03:36,906 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;@a8d6ddb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 23:03:36,906 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 23:03:36,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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) [2024-09-12 23:03:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 23:03:36,921 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:03:36,922 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:03:36,922 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:03:36,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:03:36,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1413296547, now seen corresponding path program 1 times [2024-09-12 23:03:36,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:03:36,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704602210] [2024-09-12 23:03:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:03:36,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:03:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:37,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:03:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:37,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:03:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:03:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:03:37,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704602210] [2024-09-12 23:03:37,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704602210] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 23:03:37,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 23:03:37,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 23:03:37,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999680237] [2024-09-12 23:03:37,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 23:03:37,139 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 23:03:37,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:03:37,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 23:03:37,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 23:03:37,165 INFO L87 Difference]: Start difference. First operand has 35 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 23:03:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:03:37,199 INFO L93 Difference]: Finished difference Result 62 states and 102 transitions. [2024-09-12 23:03:37,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 23:03:37,203 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-09-12 23:03:37,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:03:37,211 INFO L225 Difference]: With dead ends: 62 [2024-09-12 23:03:37,211 INFO L226 Difference]: Without dead ends: 31 [2024-09-12 23:03:37,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 23:03:37,221 INFO L434 NwaCegarLoop]: 43 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, 43 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 [2024-09-12 23:03:37,222 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 23:03:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-12 23:03:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-12 23:03:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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) [2024-09-12 23:03:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2024-09-12 23:03:37,266 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 17 [2024-09-12 23:03:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:03:37,267 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2024-09-12 23:03:37,267 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 23:03:37,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:03:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2024-09-12 23:03:37,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 23:03:37,270 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:03:37,270 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:03:37,270 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 23:03:37,271 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:03:37,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:03:37,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1248341200, now seen corresponding path program 1 times [2024-09-12 23:03:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:03:37,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435069666] [2024-09-12 23:03:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:03:37,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:03:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:37,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:03:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:37,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:03:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:03:37,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:03:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435069666] [2024-09-12 23:03:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435069666] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 23:03:37,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 23:03:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 23:03:37,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086598755] [2024-09-12 23:03:37,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 23:03:37,881 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 23:03:37,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:03:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 23:03:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 23:03:37,882 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 23:03:39,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:03:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:03:39,251 INFO L93 Difference]: Finished difference Result 63 states and 90 transitions. [2024-09-12 23:03:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 23:03:39,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-09-12 23:03:39,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:03:39,254 INFO L225 Difference]: With dead ends: 63 [2024-09-12 23:03:39,256 INFO L226 Difference]: Without dead ends: 45 [2024-09-12 23:03:39,256 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 23:03:39,257 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-12 23:03:39,259 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 174 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-12 23:03:39,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-12 23:03:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-12 23:03:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 23:03:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-09-12 23:03:39,285 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 18 [2024-09-12 23:03:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:03:39,285 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-09-12 23:03:39,285 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 23:03:39,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:03:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-09-12 23:03:39,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 23:03:39,288 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:03:39,288 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:03:39,288 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 23:03:39,289 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:03:39,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:03:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1903651755, now seen corresponding path program 1 times [2024-09-12 23:03:39,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:03:39,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061585023] [2024-09-12 23:03:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:03:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:03:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:39,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:03:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:39,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:03:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:03:39,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:03:39,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061585023] [2024-09-12 23:03:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061585023] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:03:39,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384157709] [2024-09-12 23:03:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:03:39,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:03:39,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:03:39,662 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) [2024-09-12 23:03:39,664 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 23:03:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:39,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 23:03:39,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:03:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:03:39,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:03:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:03:40,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384157709] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:03:40,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 23:03:40,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-09-12 23:03:40,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952166240] [2024-09-12 23:03:40,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 23:03:40,121 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 23:03:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:03:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 23:03:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-12 23:03:40,125 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 23:03:44,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:03:48,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:03:52,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:03:57,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:03:57,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:03:57,391 INFO L93 Difference]: Finished difference Result 114 states and 179 transitions. [2024-09-12 23:03:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 23:03:57,392 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-09-12 23:03:57,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:03:57,394 INFO L225 Difference]: With dead ends: 114 [2024-09-12 23:03:57,395 INFO L226 Difference]: Without dead ends: 96 [2024-09-12 23:03:57,396 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-09-12 23:03:57,397 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 28 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 110 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2024-09-12 23:03:57,397 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 281 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 172 Invalid, 4 Unknown, 0 Unchecked, 17.1s Time] [2024-09-12 23:03:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-12 23:03:57,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 64. [2024-09-12 23:03:57,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 32 states have (on average 1.21875) internal successors, (39), 35 states have internal predecessors, (39), 26 states have call successors, (26), 6 states have call predecessors, (26), 5 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 23:03:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2024-09-12 23:03:57,422 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 20 [2024-09-12 23:03:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:03:57,422 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2024-09-12 23:03:57,422 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 23:03:57,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:03:57,423 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2024-09-12 23:03:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 23:03:57,424 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:03:57,424 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:03:57,441 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 23:03:57,628 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:03:57,629 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:03:57,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:03:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1142714768, now seen corresponding path program 1 times [2024-09-12 23:03:57,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:03:57,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542424233] [2024-09-12 23:03:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:03:57,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:03:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 23:03:57,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020179632] [2024-09-12 23:03:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:03:57,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:03:57,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:03:57,657 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) [2024-09-12 23:03:57,660 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 23:03:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:03:57,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 23:03:57,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:03:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 23:03:57,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 23:03:57,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:03:57,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542424233] [2024-09-12 23:03:57,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 23:03:57,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020179632] [2024-09-12 23:03:57,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020179632] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 23:03:57,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 23:03:57,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 23:03:57,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892749960] [2024-09-12 23:03:57,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 23:03:57,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 23:03:57,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:03:57,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 23:03:57,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 23:03:57,799 INFO L87 Difference]: Start difference. First operand 64 states and 89 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 23:04:01,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:04:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:04:01,445 INFO L93 Difference]: Finished difference Result 89 states and 125 transitions. [2024-09-12 23:04:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 23:04:01,446 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-12 23:04:01,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:04:01,448 INFO L225 Difference]: With dead ends: 89 [2024-09-12 23:04:01,448 INFO L226 Difference]: Without dead ends: 86 [2024-09-12 23:04:01,448 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 23:04:01,449 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-09-12 23:04:01,449 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 130 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-09-12 23:04:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-12 23:04:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-09-12 23:04:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 40 states have (on average 1.2) internal successors, (48), 42 states have internal predecessors, (48), 38 states have call successors, (38), 8 states have call predecessors, (38), 7 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 23:04:01,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 121 transitions. [2024-09-12 23:04:01,479 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 121 transitions. Word has length 28 [2024-09-12 23:04:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:04:01,480 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 121 transitions. [2024-09-12 23:04:01,480 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 23:04:01,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:04:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 121 transitions. [2024-09-12 23:04:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-12 23:04:01,481 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:04:01,482 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:04:01,493 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 23:04:01,682 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:04:01,682 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:04:01,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:04:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1314960995, now seen corresponding path program 1 times [2024-09-12 23:04:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:04:01,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499861084] [2024-09-12 23:04:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:04:01,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:04:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 23:04:01,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228039025] [2024-09-12 23:04:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:04:01,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:04:01,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:04:01,714 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) [2024-09-12 23:04:01,715 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 23:04:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:04:01,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 23:04:01,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:04:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:04:01,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:04:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:04:03,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:04:03,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499861084] [2024-09-12 23:04:03,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 23:04:03,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228039025] [2024-09-12 23:04:03,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228039025] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:04:03,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 23:04:03,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-12 23:04:03,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42532324] [2024-09-12 23:04:03,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 23:04:03,703 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 23:04:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:04:03,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 23:04:03,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-12 23:04:03,704 INFO L87 Difference]: Start difference. First operand 86 states and 121 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 23:04:09,924 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 [] [2024-09-12 23:04:21,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:04:25,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:04:29,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:04:33,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:04:38,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:04:42,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:04:46,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:04:51,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:04:55,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:04:59,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:05:03,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:05:07,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:05:11,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:05:16,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:05:20,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:05:21,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:05:23,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:05:27,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:05:27,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:05:27,782 INFO L93 Difference]: Finished difference Result 156 states and 225 transitions. [2024-09-12 23:05:27,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 23:05:27,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2024-09-12 23:05:27,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:05:27,785 INFO L225 Difference]: With dead ends: 156 [2024-09-12 23:05:27,785 INFO L226 Difference]: Without dead ends: 132 [2024-09-12 23:05:27,785 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=47, Invalid=107, Unknown=2, NotChecked=0, Total=156 [2024-09-12 23:05:27,786 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 43 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.9s IncrementalHoareTripleChecker+Time [2024-09-12 23:05:27,789 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 322 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 210 Invalid, 16 Unknown, 0 Unchecked, 71.9s Time] [2024-09-12 23:05:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-09-12 23:05:27,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2024-09-12 23:05:27,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 61 states have internal predecessors, (69), 56 states have call successors, (56), 11 states have call predecessors, (56), 10 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-12 23:05:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 178 transitions. [2024-09-12 23:05:27,843 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 178 transitions. Word has length 27 [2024-09-12 23:05:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:05:27,843 INFO L474 AbstractCegarLoop]: Abstraction has 125 states and 178 transitions. [2024-09-12 23:05:27,843 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 23:05:27,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:05:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 178 transitions. [2024-09-12 23:05:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 23:05:27,845 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:05:27,845 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-09-12 23:05:27,852 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 23:05:28,046 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:05:28,046 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:05:28,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:05:28,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2083654722, now seen corresponding path program 1 times [2024-09-12 23:05:28,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:05:28,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987415178] [2024-09-12 23:05:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:05:28,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:05:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 23:05:28,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74501803] [2024-09-12 23:05:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:05:28,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:05:28,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:05:28,106 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) [2024-09-12 23:05:28,108 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 23:05:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:05:28,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 23:05:28,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:05:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 23:05:28,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 23:05:28,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:05:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987415178] [2024-09-12 23:05:28,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 23:05:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74501803] [2024-09-12 23:05:28,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74501803] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 23:05:28,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 23:05:28,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 23:05:28,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934834798] [2024-09-12 23:05:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 23:05:28,342 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 23:05:28,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:05:28,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 23:05:28,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 23:05:28,343 INFO L87 Difference]: Start difference. First operand 125 states and 178 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2024-09-12 23:05:30,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:05:30,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:05:30,163 INFO L93 Difference]: Finished difference Result 139 states and 189 transitions. [2024-09-12 23:05:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 23:05:30,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 39 [2024-09-12 23:05:30,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:05:30,167 INFO L225 Difference]: With dead ends: 139 [2024-09-12 23:05:30,167 INFO L226 Difference]: Without dead ends: 137 [2024-09-12 23:05:30,169 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-12 23:05:30,171 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 9 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-12 23:05:30,171 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 257 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-12 23:05:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-09-12 23:05:30,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-09-12 23:05:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 67 states have (on average 1.164179104477612) internal successors, (78), 70 states have internal predecessors, (78), 56 states have call successors, (56), 14 states have call predecessors, (56), 13 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-12 23:05:30,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2024-09-12 23:05:30,220 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 39 [2024-09-12 23:05:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:05:30,220 INFO L474 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2024-09-12 23:05:30,220 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2024-09-12 23:05:30,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:05:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2024-09-12 23:05:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 23:05:30,225 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:05:30,225 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 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] [2024-09-12 23:05:30,242 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 23:05:30,426 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:05:30,426 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:05:30,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:05:30,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1819175000, now seen corresponding path program 1 times [2024-09-12 23:05:30,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:05:30,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254352361] [2024-09-12 23:05:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:05:30,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:05:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 23:05:30,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949489913] [2024-09-12 23:05:30,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:05:30,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:05:30,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:05:30,479 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) [2024-09-12 23:05:30,482 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 23:05:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:05:30,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 23:05:30,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:05:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-12 23:05:30,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:06:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-12 23:06:16,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:06:16,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254352361] [2024-09-12 23:06:16,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 23:06:16,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949489913] [2024-09-12 23:06:16,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949489913] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:06:16,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 23:06:16,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2024-09-12 23:06:16,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673840200] [2024-09-12 23:06:16,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 23:06:16,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 23:06:16,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:06:16,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 23:06:16,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=79, Unknown=2, NotChecked=0, Total=110 [2024-09-12 23:06:16,718 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-12 23:06:20,879 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 [] [2024-09-12 23:06:22,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:06:26,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:06:30,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:06:34,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:06:38,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:06:42,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:06:44,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:06:48,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:06:52,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:06:52,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:06:52,976 INFO L93 Difference]: Finished difference Result 155 states and 214 transitions. [2024-09-12 23:06:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 23:06:52,977 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 54 [2024-09-12 23:06:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:06:52,979 INFO L225 Difference]: With dead ends: 155 [2024-09-12 23:06:52,979 INFO L226 Difference]: Without dead ends: 137 [2024-09-12 23:06:52,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=36, Invalid=94, Unknown=2, NotChecked=0, Total=132 [2024-09-12 23:06:52,980 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 44 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.2s IncrementalHoareTripleChecker+Time [2024-09-12 23:06:52,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 134 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 135 Invalid, 7 Unknown, 0 Unchecked, 36.2s Time] [2024-09-12 23:06:52,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-09-12 23:06:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-09-12 23:06:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 68 states have (on average 1.161764705882353) internal successors, (79), 71 states have internal predecessors, (79), 55 states have call successors, (55), 14 states have call predecessors, (55), 13 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 23:06:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 186 transitions. [2024-09-12 23:06:53,004 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 186 transitions. Word has length 54 [2024-09-12 23:06:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:06:53,004 INFO L474 AbstractCegarLoop]: Abstraction has 137 states and 186 transitions. [2024-09-12 23:06:53,005 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-12 23:06:53,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:06:53,005 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 186 transitions. [2024-09-12 23:06:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 23:06:53,007 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:06:53,007 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1, 1] [2024-09-12 23:06:53,021 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 23:06:53,210 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 23:06:53,211 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:06:53,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:06:53,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2033276272, now seen corresponding path program 1 times [2024-09-12 23:06:53,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:06:53,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333653821] [2024-09-12 23:06:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:06:53,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:06:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:06:54,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:06:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:06:54,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:06:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:06:54,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 23:06:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:06:54,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 23:06:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:06:54,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 23:06:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:06:54,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 23:06:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:06:54,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 23:06:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:06:54,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 23:06:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:06:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 23:06:54,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:06:54,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333653821] [2024-09-12 23:06:54,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333653821] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:06:54,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082747221] [2024-09-12 23:06:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:06:54,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:06:54,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:06:54,526 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) [2024-09-12 23:06:54,527 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 23:06:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:06:54,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 23:06:54,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:06:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-12 23:06:55,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:07:13,856 WARN L293 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 23:07:34,102 WARN L293 SmtUtils]: Spent 16.11s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:07:46,248 WARN L293 SmtUtils]: Spent 12.10s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:08:07,217 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:08:31,466 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:08:44,112 WARN L293 SmtUtils]: Spent 8.38s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 23:09:04,452 WARN L293 SmtUtils]: Spent 16.05s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:09:20,584 WARN L293 SmtUtils]: Spent 16.11s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:09:32,704 WARN L293 SmtUtils]: Spent 12.12s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:09:36,788 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_main_~q~0 1073741824))) (let ((.cse2 (* 4 .cse0))) (or (< (mod c_main_~r~0 4294967296) (mod (+ c_main_~p~0 .cse0) 4294967296)) (not (= (mod (+ (* c_main_~q~0 c_main_~q~0 c_main_~p~0 4294967280) (* c_main_~q~0 c_main_~p~0 c_main_~r~0 4294967280) (* c_main_~q~0 c_main_~n~0 4294967280 c_main_~h~0) (* c_main_~q~0 16 c_main_~r~0 c_main_~h~0) (* c_main_~p~0 c_main_~h~0 c_main_~h~0) (* c_main_~q~0 16 c_main_~p~0 c_main_~n~0)) 4294967296) 0)) (let ((.cse1 (* 2 (div (mod c_main_~p~0 4294967296) 2)))) (< (+ (* (div (+ (* 3 .cse0) .cse1) 4294967296) 4294967296) c_main_~r~0) (+ .cse2 c_main_~p~0 (* (div (+ (* (- 1) .cse0) (* (- 1) c_main_~p~0) c_main_~r~0) 4294967296) 4294967296) .cse1))) (< .cse2 (+ (mod c_main_~n~0 4294967296) 1))))) is different from true [2024-09-12 23:09:48,946 WARN L293 SmtUtils]: Spent 12.14s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:09:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 2 not checked. [2024-09-12 23:09:53,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082747221] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:09:53,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 23:09:53,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 25 [2024-09-12 23:09:53,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377638180] [2024-09-12 23:09:53,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 23:09:53,109 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 23:09:53,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:09:53,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 23:09:53,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2024-09-12 23:09:53,110 INFO L87 Difference]: Start difference. First operand 137 states and 186 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 21 states have internal predecessors, (44), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2024-09-12 23:09:57,425 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 [] [2024-09-12 23:10:02,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:10:06,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:10:22,998 WARN L293 SmtUtils]: Spent 13.44s on a formula simplification. DAG size of input: 56 DAG size of output: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 23:10:27,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:10:32,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:10:36,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:10:40,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:10:44,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:10:48,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:10:52,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:10:56,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:01,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:05,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:09,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:13,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:17,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:24,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:26,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:28,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:36,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:40,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:44,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:48,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:11:52,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:11:54,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:11:56,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:12:00,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:12:04,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:12:08,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:12:12,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:12:16,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:12:20,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:12:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:12:20,763 INFO L93 Difference]: Finished difference Result 191 states and 261 transitions. [2024-09-12 23:12:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 23:12:20,764 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 21 states have internal predecessors, (44), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) Word has length 53 [2024-09-12 23:12:20,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:12:20,766 INFO L225 Difference]: With dead ends: 191 [2024-09-12 23:12:20,766 INFO L226 Difference]: Without dead ends: 160 [2024-09-12 23:12:20,767 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 105 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=162, Invalid=833, Unknown=1, NotChecked=60, Total=1056 [2024-09-12 23:12:20,768 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 9 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 62 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 127.7s IncrementalHoareTripleChecker+Time [2024-09-12 23:12:20,768 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 299 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 393 Invalid, 28 Unknown, 113 Unchecked, 127.7s Time] [2024-09-12 23:12:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-12 23:12:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2024-09-12 23:12:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 79 states have (on average 1.1265822784810127) internal successors, (89), 82 states have internal predecessors, (89), 56 states have call successors, (56), 17 states have call predecessors, (56), 16 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-12 23:12:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2024-09-12 23:12:20,832 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 53 [2024-09-12 23:12:20,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:12:20,832 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2024-09-12 23:12:20,832 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 21 states have internal predecessors, (44), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2024-09-12 23:12:20,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:12:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2024-09-12 23:12:20,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 23:12:20,834 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:12:20,835 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:12:20,848 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 23:12:21,035 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:12:21,036 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:12:21,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:12:21,036 INFO L85 PathProgramCache]: Analyzing trace with hash 82330099, now seen corresponding path program 1 times [2024-09-12 23:12:21,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:12:21,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623680348] [2024-09-12 23:12:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:12:21,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:12:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:12:21,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:12:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:12:21,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:12:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:12:21,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 23:12:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:12:21,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 23:12:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:12:21,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 23:12:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:12:21,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 23:12:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:12:21,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 23:12:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:12:21,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 23:12:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:12:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 23:12:21,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:12:21,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623680348] [2024-09-12 23:12:21,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623680348] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:12:21,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236459495] [2024-09-12 23:12:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:12:21,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:12:21,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:12:21,661 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) [2024-09-12 23:12:21,662 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 23:12:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:12:21,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 23:12:21,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:12:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 23:12:22,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:12:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 23:12:22,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236459495] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:12:22,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 23:12:22,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-09-12 23:12:22,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804965498] [2024-09-12 23:12:22,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 23:12:22,731 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 23:12:22,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:12:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 23:12:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-09-12 23:12:22,732 INFO L87 Difference]: Start difference. First operand 152 states and 198 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 5 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-09-12 23:12:29,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:12:33,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:12:38,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:12:42,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:12:44,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:12:45,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:12:45,567 INFO L93 Difference]: Finished difference Result 218 states and 302 transitions. [2024-09-12 23:12:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 23:12:45,568 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 5 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 55 [2024-09-12 23:12:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:12:45,569 INFO L225 Difference]: With dead ends: 218 [2024-09-12 23:12:45,569 INFO L226 Difference]: Without dead ends: 165 [2024-09-12 23:12:45,570 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2024-09-12 23:12:45,572 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 68 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 123 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2024-09-12 23:12:45,572 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 380 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 240 Invalid, 4 Unknown, 0 Unchecked, 22.0s Time] [2024-09-12 23:12:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-09-12 23:12:45,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 150. [2024-09-12 23:12:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 86 states have internal predecessors, (94), 50 states have call successors, (50), 17 states have call predecessors, (50), 16 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 23:12:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 191 transitions. [2024-09-12 23:12:45,650 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 191 transitions. Word has length 55 [2024-09-12 23:12:45,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:12:45,651 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 191 transitions. [2024-09-12 23:12:45,651 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 5 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-09-12 23:12:45,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:12:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 191 transitions. [2024-09-12 23:12:45,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 23:12:45,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:12:45,653 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 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, 1, 1, 1] [2024-09-12 23:12:45,671 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 23:12:45,856 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:12:45,857 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:12:45,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:12:45,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2118733363, now seen corresponding path program 2 times [2024-09-12 23:12:45,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:12:45,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368532543] [2024-09-12 23:12:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:12:45,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:12:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 23:12:45,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570747210] [2024-09-12 23:12:45,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 23:12:45,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:12:45,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:12:45,922 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) [2024-09-12 23:12:45,923 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 23:12:46,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 23:12:46,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 23:12:46,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 23:12:46,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:12:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 36 proven. 13 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-09-12 23:12:46,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:13:08,353 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_main_~q~0 4294967296))) (or (let ((.cse0 (div .cse2 4))) (= (mod (* c_main_~n~0 .cse0) 4294967296) (mod (let ((.cse1 (div (mod c_main_~p~0 4294967296) 2))) (+ (* c_main_~r~0 .cse0) (* .cse1 .cse1) (* 4294967295 c_main_~p~0 .cse0) (* 2 .cse1 .cse0))) 4294967296))) (not (= (mod (+ (* c_main_~q~0 c_main_~r~0) (* c_main_~q~0 4294967295 c_main_~n~0) (* c_main_~p~0 c_main_~p~0)) 4294967296) 0)) (= .cse2 1))) is different from true [2024-09-12 23:13:14,185 WARN L293 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:13:34,880 WARN L293 SmtUtils]: Spent 12.49s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:13:38,911 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_main_~q~0 4294967296))) (or (let ((.cse0 (div .cse2 4))) (= (mod (* c_main_~n~0 .cse0) 4294967296) (mod (let ((.cse1 (div (mod c_main_~p~0 4294967296) 2))) (+ (* c_main_~r~0 .cse0) (* .cse1 .cse1) (* 4294967295 c_main_~p~0 .cse0) (* 2 .cse1 .cse0))) 4294967296))) (not (= (mod (+ (* c_main_~q~0 c_main_~r~0) (* c_main_~q~0 4294967295 c_main_~n~0) (* c_main_~p~0 c_main_~p~0)) 4294967296) 0)) (not (= (mod (+ (* c_main_~q~0 c_main_~q~0 4294967295 c_main_~p~0) (* c_main_~q~0 c_main_~r~0 4 c_main_~h~0) (* c_main_~p~0 c_main_~h~0 c_main_~h~0) (* c_main_~q~0 c_main_~p~0 c_main_~n~0 4) (* 4294967292 c_main_~q~0 c_main_~p~0 c_main_~r~0) (* 4294967292 c_main_~q~0 c_main_~n~0 c_main_~h~0)) 4294967296) 0)) (= .cse2 1))) is different from true [2024-09-12 23:13:47,386 WARN L293 SmtUtils]: Spent 8.41s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:13:53,604 WARN L293 SmtUtils]: Spent 6.00s 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) [2024-09-12 23:13:58,888 WARN L293 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:14:04,964 WARN L293 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:14:12,986 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:14:30,716 WARN L293 SmtUtils]: Spent 13.61s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:14:38,753 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:14:55,480 WARN L293 SmtUtils]: Spent 11.48s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:15:03,904 WARN L293 SmtUtils]: Spent 8.41s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:15:16,811 WARN L293 SmtUtils]: Spent 8.06s 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) [2024-09-12 23:15:26,672 WARN L293 SmtUtils]: Spent 9.86s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:15:34,705 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:15:46,721 WARN L293 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:15:54,984 WARN L293 SmtUtils]: Spent 8.26s 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) [2024-09-12 23:16:02,786 WARN L293 SmtUtils]: Spent 7.80s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:16:12,620 WARN L293 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:16:20,763 WARN L293 SmtUtils]: Spent 8.14s 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) [2024-09-12 23:16:29,733 WARN L293 SmtUtils]: Spent 8.97s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:16:35,063 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:16:39,070 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_main_~q~0 4294967296))) (or (let ((.cse0 (div .cse2 4))) (= (mod (* c_main_~n~0 .cse0) 4294967296) (mod (let ((.cse1 (div (mod c_main_~p~0 4294967296) 2))) (+ (* c_main_~r~0 .cse0) (* .cse1 .cse1) (* 4294967295 c_main_~p~0 .cse0) (* 2 .cse1 .cse0))) 4294967296))) (not (= (mod (+ (* c_main_~q~0 c_main_~r~0) (* c_main_~q~0 4294967295 c_main_~n~0) (* c_main_~p~0 c_main_~p~0)) 4294967296) 0)) (< .cse2 (+ (mod c_main_~n~0 4294967296) 1)) (not (= (mod (+ (* c_main_~q~0 c_main_~q~0 4294967295 c_main_~p~0) (* c_main_~q~0 c_main_~r~0 4 c_main_~h~0) (* c_main_~p~0 c_main_~h~0 c_main_~h~0) (* c_main_~q~0 c_main_~p~0 c_main_~n~0 4) (* 4294967292 c_main_~q~0 c_main_~p~0 c_main_~r~0) (* 4294967292 c_main_~q~0 c_main_~n~0 c_main_~h~0)) 4294967296) 0)) (= .cse2 1))) is different from true [2024-09-12 23:16:50,088 WARN L293 SmtUtils]: Spent 6.70s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:17:02,148 WARN L293 SmtUtils]: Spent 12.06s 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) [2024-09-12 23:17:26,225 WARN L293 SmtUtils]: Spent 24.08s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:17:37,925 WARN L293 SmtUtils]: Spent 11.70s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:17:46,136 WARN L293 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 23:18:02,158 WARN L293 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15