./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_15x0-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/recursive-simple/sum_15x0-1.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 b32326f1b997cecaa031e8ab338eea5ffa634c465fc73ccabccfc7d02b1e5cc1 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 11:28:36,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 11:28:36,772 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 11:28:36,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 11:28:36,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 11:28:36,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 11:28:36,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 11:28:36,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 11:28:36,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 11:28:36,811 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 11:28:36,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 11:28:36,812 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 11:28:36,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 11:28:36,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 11:28:36,816 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 11:28:36,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 11:28:36,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 11:28:36,817 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 11:28:36,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 11:28:36,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 11:28:36,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 11:28:36,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 11:28:36,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 11:28:36,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 11:28:36,819 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 11:28:36,819 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 11:28:36,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 11:28:36,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 11:28:36,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 11:28:36,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 11:28:36,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 11:28:36,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 11:28:36,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:28:36,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 11:28:36,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 11:28:36,822 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 11:28:36,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 11:28:36,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 11:28:36,823 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 11:28:36,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 11:28:36,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 11:28:36,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 11:28:36,824 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 -> b32326f1b997cecaa031e8ab338eea5ffa634c465fc73ccabccfc7d02b1e5cc1 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.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 11:28:37,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 11:28:37,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 11:28:37,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 11:28:37,168 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 11:28:37,168 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 11:28:37,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-25 11:28:38,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 11:28:38,858 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 11:28:38,859 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-25 11:28:38,870 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c46846d51/078c0f685f2b422b8b2a4872968c3f6a/FLAGf07748c95 [2024-09-25 11:28:38,890 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c46846d51/078c0f685f2b422b8b2a4872968c3f6a [2024-09-25 11:28:38,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 11:28:38,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 11:28:38,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 11:28:38,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 11:28:38,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 11:28:38,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:28:38" (1/1) ... [2024-09-25 11:28:38,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21045860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:38, skipping insertion in model container [2024-09-25 11:28:38,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:28:38" (1/1) ... [2024-09-25 11:28:38,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 11:28:39,090 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c[481,494] [2024-09-25 11:28:39,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:28:39,108 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 11:28:39,122 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c[481,494] [2024-09-25 11:28:39,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:28:39,141 INFO L204 MainTranslator]: Completed translation [2024-09-25 11:28:39,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39 WrapperNode [2024-09-25 11:28:39,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 11:28:39,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 11:28:39,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 11:28:39,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 11:28:39,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,172 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 11:28:39,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 11:28:39,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 11:28:39,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 11:28:39,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 11:28:39,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,197 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]. [2024-09-25 11:28:39,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 11:28:39,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 11:28:39,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 11:28:39,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 11:28:39,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (1/1) ... [2024-09-25 11:28:39,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:28:39,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:39,246 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) [2024-09-25 11:28:39,253 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 [2024-09-25 11:28:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 11:28:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 11:28:39,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 11:28:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 11:28:39,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 11:28:39,293 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-25 11:28:39,293 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-25 11:28:39,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 11:28:39,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 11:28:39,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 11:28:39,357 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 11:28:39,359 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 11:28:39,484 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-25 11:28:39,485 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 11:28:39,510 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 11:28:39,510 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 11:28:39,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:28:39 BoogieIcfgContainer [2024-09-25 11:28:39,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 11:28:39,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 11:28:39,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 11:28:39,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 11:28:39,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:28:38" (1/3) ... [2024-09-25 11:28:39,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6afe9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:28:39, skipping insertion in model container [2024-09-25 11:28:39,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:39" (2/3) ... [2024-09-25 11:28:39,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6afe9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:28:39, skipping insertion in model container [2024-09-25 11:28:39,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:28:39" (3/3) ... [2024-09-25 11:28:39,520 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2024-09-25 11:28:39,536 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 11:28:39,537 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 11:28:39,594 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 11:28:39,600 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;@4cbf5bcf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 11:28:39,601 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 11:28:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 11:28:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-25 11:28:39,613 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:39,614 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:39,614 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:39,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:39,620 INFO L85 PathProgramCache]: Analyzing trace with hash 661201948, now seen corresponding path program 1 times [2024-09-25 11:28:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:39,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736521564] [2024-09-25 11:28:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:39,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:39,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:39,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 11:28:39,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736521564] [2024-09-25 11:28:39,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736521564] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:28:39,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:28:39,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:28:39,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598377605] [2024-09-25 11:28:39,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:28:39,958 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:28:39,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:39,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:28:39,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:28:39,983 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 11:28:40,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:40,050 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-25 11:28:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:28:40,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-25 11:28:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:40,062 INFO L225 Difference]: With dead ends: 30 [2024-09-25 11:28:40,062 INFO L226 Difference]: Without dead ends: 18 [2024-09-25 11:28:40,065 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:28:40,069 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:40,070 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 48 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:28:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-25 11:28:40,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-25 11:28:40,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-25 11:28:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-25 11:28:40,108 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2024-09-25 11:28:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:40,110 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-25 11:28:40,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 11:28:40,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:40,111 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-25 11:28:40,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-25 11:28:40,114 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:40,114 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:40,114 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 11:28:40,115 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:40,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:40,115 INFO L85 PathProgramCache]: Analyzing trace with hash 36081636, now seen corresponding path program 1 times [2024-09-25 11:28:40,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:40,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418762954] [2024-09-25 11:28:40,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:40,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:40,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:40,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:40,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 11:28:40,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418762954] [2024-09-25 11:28:40,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418762954] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440715688] [2024-09-25 11:28:40,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:40,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:40,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:40,359 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) [2024-09-25 11:28:40,361 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 11:28:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:40,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 11:28:40,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 11:28:40,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 11:28:40,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440715688] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:40,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:40,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-09-25 11:28:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120256381] [2024-09-25 11:28:40,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:40,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 11:28:40,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:40,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 11:28:40,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-25 11:28:40,746 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 11:28:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:40,826 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-09-25 11:28:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 11:28:40,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 19 [2024-09-25 11:28:40,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:40,827 INFO L225 Difference]: With dead ends: 25 [2024-09-25 11:28:40,828 INFO L226 Difference]: Without dead ends: 21 [2024-09-25 11:28:40,829 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-25 11:28:40,831 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:40,831 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-25 11:28:40,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-25 11:28:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-25 11:28:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-25 11:28:40,841 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-09-25 11:28:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:40,842 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-25 11:28:40,842 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 11:28:40,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-25 11:28:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-25 11:28:40,845 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:40,845 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:40,863 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-25 11:28:41,046 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:41,046 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:41,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1588422884, now seen corresponding path program 2 times [2024-09-25 11:28:41,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:41,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995864228] [2024-09-25 11:28:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:41,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 11:28:41,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:41,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995864228] [2024-09-25 11:28:41,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995864228] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:41,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684277391] [2024-09-25 11:28:41,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:28:41,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:41,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:41,298 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) [2024-09-25 11:28:41,300 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 11:28:41,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:28:41,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:41,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-25 11:28:41,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 11:28:41,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-25 11:28:41,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684277391] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:41,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:41,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-09-25 11:28:41,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546373924] [2024-09-25 11:28:41,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:41,780 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-25 11:28:41,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:41,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-25 11:28:41,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-25 11:28:41,781 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 11:28:41,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:41,856 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-25 11:28:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 11:28:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 25 [2024-09-25 11:28:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:41,858 INFO L225 Difference]: With dead ends: 28 [2024-09-25 11:28:41,859 INFO L226 Difference]: Without dead ends: 24 [2024-09-25 11:28:41,860 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-25 11:28:41,861 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:41,862 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-25 11:28:41,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-25 11:28:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-25 11:28:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-25 11:28:41,872 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2024-09-25 11:28:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:41,873 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-25 11:28:41,874 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 11:28:41,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-25 11:28:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-25 11:28:41,875 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:41,876 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:41,892 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 11:28:42,079 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:42,080 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:42,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1668608796, now seen corresponding path program 3 times [2024-09-25 11:28:42,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:42,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178307605] [2024-09-25 11:28:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:42,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:42,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:42,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:42,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:42,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:42,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 11:28:42,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178307605] [2024-09-25 11:28:42,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178307605] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:42,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122708769] [2024-09-25 11:28:42,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:28:42,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:42,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:42,337 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) [2024-09-25 11:28:42,339 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 11:28:42,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-25 11:28:42,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:42,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 11:28:42,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 11:28:42,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:28:42,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122708769] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:42,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:42,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-09-25 11:28:42,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802162773] [2024-09-25 11:28:42,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:42,960 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-25 11:28:42,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:42,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-25 11:28:42,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-25 11:28:42,962 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-25 11:28:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:43,038 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-25 11:28:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 11:28:43,039 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) Word has length 31 [2024-09-25 11:28:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:43,040 INFO L225 Difference]: With dead ends: 31 [2024-09-25 11:28:43,040 INFO L226 Difference]: Without dead ends: 27 [2024-09-25 11:28:43,041 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-09-25 11:28:43,042 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:43,042 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:28:43,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-25 11:28:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-25 11:28:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-25 11:28:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-25 11:28:43,051 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2024-09-25 11:28:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:43,052 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-25 11:28:43,052 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-25 11:28:43,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-25 11:28:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-25 11:28:43,054 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:43,055 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:43,067 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-25 11:28:43,255 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:43,256 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:43,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:43,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2054436324, now seen corresponding path program 4 times [2024-09-25 11:28:43,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:43,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007743150] [2024-09-25 11:28:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:43,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:43,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:43,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:43,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:43,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:43,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:43,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-25 11:28:43,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007743150] [2024-09-25 11:28:43,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007743150] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677280506] [2024-09-25 11:28:43,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 11:28:43,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:43,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:43,506 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) [2024-09-25 11:28:43,508 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 11:28:43,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 11:28:43,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:43,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 11:28:43,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-25 11:28:43,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 11:28:44,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677280506] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:44,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:44,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-09-25 11:28:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092310296] [2024-09-25 11:28:44,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:44,366 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 11:28:44,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 11:28:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-09-25 11:28:44,367 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-25 11:28:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:44,451 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-09-25 11:28:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 11:28:44,452 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 37 [2024-09-25 11:28:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:44,453 INFO L225 Difference]: With dead ends: 34 [2024-09-25 11:28:44,453 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 11:28:44,453 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-25 11:28:44,454 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:44,454 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:28:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 11:28:44,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-25 11:28:44,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-25 11:28:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-09-25 11:28:44,468 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2024-09-25 11:28:44,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:44,468 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-09-25 11:28:44,468 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-25 11:28:44,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-09-25 11:28:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-25 11:28:44,471 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:44,471 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:44,488 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 11:28:44,672 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:44,673 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:44,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2043660772, now seen corresponding path program 5 times [2024-09-25 11:28:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:44,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540920722] [2024-09-25 11:28:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:44,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:44,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:44,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:44,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:44,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:44,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:44,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:44,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 11:28:44,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:44,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540920722] [2024-09-25 11:28:44,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540920722] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:44,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211247685] [2024-09-25 11:28:45,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 11:28:45,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:45,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:45,002 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) [2024-09-25 11:28:45,003 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 11:28:45,070 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-25 11:28:45,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:45,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 11:28:45,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 11:28:45,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 11:28:46,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211247685] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:46,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:46,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-09-25 11:28:46,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385664948] [2024-09-25 11:28:46,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:46,267 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 11:28:46,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:46,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 11:28:46,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-09-25 11:28:46,271 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-25 11:28:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:46,360 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-09-25 11:28:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 11:28:46,361 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 43 [2024-09-25 11:28:46,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:46,365 INFO L225 Difference]: With dead ends: 37 [2024-09-25 11:28:46,365 INFO L226 Difference]: Without dead ends: 33 [2024-09-25 11:28:46,366 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-09-25 11:28:46,367 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:46,367 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-25 11:28:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-25 11:28:46,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-25 11:28:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-09-25 11:28:46,375 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2024-09-25 11:28:46,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:46,375 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-09-25 11:28:46,376 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-25 11:28:46,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:46,376 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-09-25 11:28:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-25 11:28:46,377 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:46,377 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:46,394 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 11:28:46,579 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-25 11:28:46,579 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:46,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:46,580 INFO L85 PathProgramCache]: Analyzing trace with hash 776256796, now seen corresponding path program 6 times [2024-09-25 11:28:46,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:46,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793117589] [2024-09-25 11:28:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:46,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:46,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:46,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:46,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:46,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:46,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:46,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:46,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:46,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-25 11:28:46,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:46,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793117589] [2024-09-25 11:28:46,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793117589] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:46,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321145286] [2024-09-25 11:28:46,914 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 11:28:46,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:46,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:46,916 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) [2024-09-25 11:28:46,917 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 11:28:46,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-25 11:28:46,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:46,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-25 11:28:46,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-25 11:28:47,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-25 11:28:48,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321145286] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:48,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:48,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-09-25 11:28:48,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284668026] [2024-09-25 11:28:48,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:48,465 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 11:28:48,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:48,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 11:28:48,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-09-25 11:28:48,466 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-25 11:28:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:48,569 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-09-25 11:28:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 11:28:48,570 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 49 [2024-09-25 11:28:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:48,571 INFO L225 Difference]: With dead ends: 40 [2024-09-25 11:28:48,571 INFO L226 Difference]: Without dead ends: 36 [2024-09-25 11:28:48,572 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2024-09-25 11:28:48,574 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:48,574 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 97 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-25 11:28:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-25 11:28:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-25 11:28:48,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-25 11:28:48,587 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2024-09-25 11:28:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:48,587 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-25 11:28:48,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-25 11:28:48,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-25 11:28:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-25 11:28:48,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:48,591 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:48,610 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 11:28:48,797 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:48,798 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:48,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:48,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830684, now seen corresponding path program 7 times [2024-09-25 11:28:48,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:48,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615241003] [2024-09-25 11:28:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:48,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:49,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:49,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:49,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:49,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:49,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:49,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-25 11:28:49,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:49,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615241003] [2024-09-25 11:28:49,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615241003] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:49,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684625620] [2024-09-25 11:28:49,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 11:28:49,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:49,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:49,223 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) [2024-09-25 11:28:49,225 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 11:28:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:49,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 11:28:49,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-25 11:28:49,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 11:28:51,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684625620] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:51,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:51,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-09-25 11:28:51,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616148377] [2024-09-25 11:28:51,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:51,137 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 11:28:51,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 11:28:51,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-09-25 11:28:51,139 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-25 11:28:51,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:51,240 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-25 11:28:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 11:28:51,240 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 55 [2024-09-25 11:28:51,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:51,241 INFO L225 Difference]: With dead ends: 43 [2024-09-25 11:28:51,241 INFO L226 Difference]: Without dead ends: 39 [2024-09-25 11:28:51,242 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2024-09-25 11:28:51,242 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:51,243 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 104 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-25 11:28:51,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-25 11:28:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-25 11:28:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-25 11:28:51,249 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2024-09-25 11:28:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:51,249 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-25 11:28:51,250 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-25 11:28:51,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-25 11:28:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-25 11:28:51,251 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:51,251 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:51,265 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 11:28:51,454 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:51,455 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:51,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash 296579100, now seen corresponding path program 8 times [2024-09-25 11:28:51,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:51,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920035294] [2024-09-25 11:28:51,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:51,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-25 11:28:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920035294] [2024-09-25 11:28:51,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920035294] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891300570] [2024-09-25 11:28:51,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:28:51,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:51,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:51,924 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) [2024-09-25 11:28:51,926 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 11:28:52,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:28:52,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:52,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-25 11:28:52,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-25 11:28:52,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-25 11:28:54,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891300570] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:54,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:54,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-09-25 11:28:54,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600286483] [2024-09-25 11:28:54,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:54,569 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-25 11:28:54,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:54,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-25 11:28:54,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-09-25 11:28:54,570 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-25 11:28:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:54,715 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-09-25 11:28:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 11:28:54,716 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 61 [2024-09-25 11:28:54,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:54,717 INFO L225 Difference]: With dead ends: 46 [2024-09-25 11:28:54,717 INFO L226 Difference]: Without dead ends: 42 [2024-09-25 11:28:54,718 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-09-25 11:28:54,718 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 119 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:54,720 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 109 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-25 11:28:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-25 11:28:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-25 11:28:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-09-25 11:28:54,732 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2024-09-25 11:28:54,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:54,732 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-09-25 11:28:54,732 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-25 11:28:54,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:54,732 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-09-25 11:28:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-25 11:28:54,733 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:54,733 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:54,751 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-25 11:28:54,934 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:54,934 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:54,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:54,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1875246108, now seen corresponding path program 9 times [2024-09-25 11:28:54,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:54,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152605881] [2024-09-25 11:28:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:54,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-25 11:28:55,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:55,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152605881] [2024-09-25 11:28:55,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152605881] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:55,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646137653] [2024-09-25 11:28:55,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:28:55,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:55,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:55,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:28:55,464 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 11:28:55,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-25 11:28:55,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:55,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-25 11:28:55,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-25 11:28:55,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 11:28:58,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646137653] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:58,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:58,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 26 [2024-09-25 11:28:58,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208913176] [2024-09-25 11:28:58,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:58,918 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-25 11:28:58,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:58,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-25 11:28:58,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-09-25 11:28:58,920 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-25 11:28:59,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:59,049 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-09-25 11:28:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 11:28:59,049 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) Word has length 67 [2024-09-25 11:28:59,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:59,050 INFO L225 Difference]: With dead ends: 49 [2024-09-25 11:28:59,050 INFO L226 Difference]: Without dead ends: 45 [2024-09-25 11:28:59,051 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=812, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 11:28:59,052 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:59,052 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 130 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-25 11:28:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-25 11:28:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-09-25 11:28:59,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-09-25 11:28:59,059 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2024-09-25 11:28:59,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:59,060 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-09-25 11:28:59,060 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-25 11:28:59,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-09-25 11:28:59,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-25 11:28:59,061 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:59,061 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:59,075 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-25 11:28:59,262 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-25 11:28:59,262 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:59,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:59,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1040850148, now seen corresponding path program 10 times [2024-09-25 11:28:59,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:59,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401219175] [2024-09-25 11:28:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:59,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-25 11:28:59,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401219175] [2024-09-25 11:28:59,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401219175] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534407098] [2024-09-25 11:28:59,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 11:28:59,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:59,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:59,848 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:28:59,850 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 11:29:00,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 11:29:00,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:29:00,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-25 11:29:00,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:29:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-25 11:29:00,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:29:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-25 11:29:04,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534407098] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:29:04,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:29:04,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 28 [2024-09-25 11:29:04,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524067456] [2024-09-25 11:29:04,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:29:04,485 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-25 11:29:04,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:29:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-25 11:29:04,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-09-25 11:29:04,486 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-25 11:29:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:29:04,638 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-09-25 11:29:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 11:29:04,639 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) Word has length 73 [2024-09-25 11:29:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:29:04,640 INFO L225 Difference]: With dead ends: 52 [2024-09-25 11:29:04,640 INFO L226 Difference]: Without dead ends: 48 [2024-09-25 11:29:04,641 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 146 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 11:29:04,642 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 118 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:29:04,642 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 116 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:29:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-25 11:29:04,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-25 11:29:04,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-25 11:29:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-25 11:29:04,652 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2024-09-25 11:29:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:29:04,653 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-25 11:29:04,653 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-25 11:29:04,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-25 11:29:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-25 11:29:04,654 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:29:04,654 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:29:04,673 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-25 11:29:04,859 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-25 11:29:04,860 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:29:04,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:04,860 INFO L85 PathProgramCache]: Analyzing trace with hash 218071268, now seen corresponding path program 11 times [2024-09-25 11:29:04,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:29:04,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149904833] [2024-09-25 11:29:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:29:04,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:29:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:04,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:29:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:04,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:29:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-25 11:29:05,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:29:05,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149904833] [2024-09-25 11:29:05,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149904833] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:29:05,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387592741] [2024-09-25 11:29:05,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 11:29:05,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:05,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:29:05,585 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:29:05,586 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 11:29:05,862 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-25 11:29:05,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:29:05,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-25 11:29:05,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:29:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-25 11:29:05,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:29:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-25 11:29:11,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387592741] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:29:11,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:29:11,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 30 [2024-09-25 11:29:11,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431800493] [2024-09-25 11:29:11,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:29:11,577 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-25 11:29:11,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:29:11,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-25 11:29:11,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2024-09-25 11:29:11,578 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-25 11:29:11,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:29:11,714 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-09-25 11:29:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 11:29:11,715 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 79 [2024-09-25 11:29:11,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:29:11,716 INFO L225 Difference]: With dead ends: 55 [2024-09-25 11:29:11,716 INFO L226 Difference]: Without dead ends: 51 [2024-09-25 11:29:11,717 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 158 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2024-09-25 11:29:11,717 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:29:11,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 133 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:29:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-25 11:29:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-25 11:29:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-09-25 11:29:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-09-25 11:29:11,723 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2024-09-25 11:29:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:29:11,724 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-09-25 11:29:11,724 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-25 11:29:11,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-09-25 11:29:11,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-25 11:29:11,725 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:29:11,725 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:29:11,740 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-25 11:29:11,929 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:11,929 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:29:11,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:11,930 INFO L85 PathProgramCache]: Analyzing trace with hash -313649636, now seen corresponding path program 12 times [2024-09-25 11:29:11,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:29:11,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736827967] [2024-09-25 11:29:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:29:11,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:29:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:29:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:29:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-25 11:29:12,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:29:12,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736827967] [2024-09-25 11:29:12,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736827967] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:29:12,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176414288] [2024-09-25 11:29:12,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 11:29:12,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:12,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:29:12,703 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:29:12,704 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 11:29:13,030 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-25 11:29:13,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:29:13,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-25 11:29:13,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:29:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-25 11:29:13,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:29:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-25 11:29:20,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176414288] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:29:20,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:29:20,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 32 [2024-09-25 11:29:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101175944] [2024-09-25 11:29:20,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:29:20,226 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-25 11:29:20,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:29:20,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-25 11:29:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-09-25 11:29:20,228 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-25 11:29:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:29:20,386 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-09-25 11:29:20,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 11:29:20,386 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) Word has length 85 [2024-09-25 11:29:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:29:20,387 INFO L225 Difference]: With dead ends: 58 [2024-09-25 11:29:20,387 INFO L226 Difference]: Without dead ends: 54 [2024-09-25 11:29:20,388 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 170 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=606, Invalid=1286, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 11:29:20,389 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 155 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:29:20,389 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 147 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:29:20,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-25 11:29:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-09-25 11:29:20,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-25 11:29:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-09-25 11:29:20,395 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2024-09-25 11:29:20,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:29:20,395 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-09-25 11:29:20,396 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-25 11:29:20,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:20,396 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-09-25 11:29:20,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-25 11:29:20,397 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:29:20,397 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:29:20,411 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-25 11:29:20,597 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-25 11:29:20,598 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:29:20,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:20,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1407532516, now seen corresponding path program 13 times [2024-09-25 11:29:20,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:29:20,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123713733] [2024-09-25 11:29:20,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:29:20,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:29:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:20,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:29:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:20,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:29:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:20,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:20,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-25 11:29:21,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:29:21,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123713733] [2024-09-25 11:29:21,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123713733] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:29:21,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758532503] [2024-09-25 11:29:21,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 11:29:21,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:21,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:29:21,481 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:29:21,483 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 11:29:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-25 11:29:21,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:29:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-25 11:29:21,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:29:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-25 11:29:31,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758532503] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:29:31,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:29:31,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 34 [2024-09-25 11:29:31,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096171377] [2024-09-25 11:29:31,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:29:31,151 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-25 11:29:31,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:29:31,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-25 11:29:31,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 11:29:31,153 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-25 11:29:31,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:29:31,326 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-09-25 11:29:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-25 11:29:31,326 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) Word has length 91 [2024-09-25 11:29:31,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:29:31,327 INFO L225 Difference]: With dead ends: 61 [2024-09-25 11:29:31,327 INFO L226 Difference]: Without dead ends: 57 [2024-09-25 11:29:31,328 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 182 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=694, Invalid=1468, Unknown=0, NotChecked=0, Total=2162 [2024-09-25 11:29:31,329 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:29:31,329 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 147 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:29:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-25 11:29:31,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-25 11:29:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2024-09-25 11:29:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-09-25 11:29:31,339 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2024-09-25 11:29:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:29:31,340 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-09-25 11:29:31,340 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-25 11:29:31,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-09-25 11:29:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-25 11:29:31,341 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:29:31,341 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:29:31,361 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-25 11:29:31,541 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-25 11:29:31,542 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:29:31,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1575356700, now seen corresponding path program 14 times [2024-09-25 11:29:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:29:31,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553333778] [2024-09-25 11:29:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:29:31,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:29:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:31,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:29:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:31,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:29:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:31,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:31,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-25 11:29:32,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:29:32,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553333778] [2024-09-25 11:29:32,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553333778] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:29:32,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107285580] [2024-09-25 11:29:32,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:29:32,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:32,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:29:32,559 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:29:32,563 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-25 11:29:33,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:29:33,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:29:33,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-25 11:29:33,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:29:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-25 11:29:33,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:29:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-25 11:29:44,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107285580] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:29:44,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:29:44,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 33] total 35 [2024-09-25 11:29:44,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838100316] [2024-09-25 11:29:44,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:29:44,388 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-25 11:29:44,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:29:44,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-25 11:29:44,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 11:29:44,390 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2024-09-25 11:29:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:29:44,573 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-09-25 11:29:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 11:29:44,574 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) Word has length 97 [2024-09-25 11:29:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:29:44,575 INFO L225 Difference]: With dead ends: 64 [2024-09-25 11:29:44,575 INFO L226 Difference]: Without dead ends: 60 [2024-09-25 11:29:44,576 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 16 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=785, Invalid=1567, Unknown=0, NotChecked=0, Total=2352 [2024-09-25 11:29:44,576 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 179 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:29:44,576 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 148 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:29:44,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-25 11:29:44,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-25 11:29:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2024-09-25 11:29:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-09-25 11:29:44,583 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2024-09-25 11:29:44,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:29:44,583 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-09-25 11:29:44,583 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2024-09-25 11:29:44,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-09-25 11:29:44,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-25 11:29:44,585 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:29:44,585 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:29:44,604 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-25 11:29:44,785 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-25 11:29:44,786 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:29:44,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash 12270308, now seen corresponding path program 15 times [2024-09-25 11:29:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:29:44,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821337210] [2024-09-25 11:29:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:29:44,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:29:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:45,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:29:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:45,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:29:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:45,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:46,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:46,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:46,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:46,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-09-25 11:29:47,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:29:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821337210] [2024-09-25 11:29:47,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821337210] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:29:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769032352] [2024-09-25 11:29:47,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:29:47,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:47,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:29:47,994 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:29:47,995 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-25 11:29:48,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-25 11:29:48,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:29:48,688 WARN L260 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-09-25 11:29:48,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:29:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-09-25 11:29:48,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 11:29:48,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769032352] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:29:48,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:29:48,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2024-09-25 11:29:48,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995473557] [2024-09-25 11:29:48,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:29:48,914 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 11:29:48,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:29:48,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 11:29:48,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-25 11:29:48,915 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 11:29:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:29:48,962 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2024-09-25 11:29:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 11:29:48,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 103 [2024-09-25 11:29:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:29:48,963 INFO L225 Difference]: With dead ends: 60 [2024-09-25 11:29:48,963 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 11:29:48,964 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-25 11:29:48,964 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:29:48,964 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:29:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 11:29:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 11:29:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-25 11:29:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 11:29:48,965 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2024-09-25 11:29:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:29:48,965 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 11:29:48,966 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 11:29:48,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 11:29:48,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 11:29:48,968 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 11:29:48,984 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-25 11:29:49,170 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-25 11:29:49,173 INFO L408 BasicCegarLoop]: Path program histogram: [15, 1] [2024-09-25 11:29:49,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 11:29:49,598 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 11:29:49,611 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:29:49,612 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:29:49,613 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:29:49,613 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:29:49,613 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:29:49,614 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:29:49,614 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:29:49,614 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:29:49,615 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:29:49,615 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:29:49,615 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:29:49,615 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:29:49,615 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:29:49,615 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:29:49,616 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:29:49,616 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:29:49,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:29:49 BoogieIcfgContainer [2024-09-25 11:29:49,616 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 11:29:49,617 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 11:29:49,617 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 11:29:49,617 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 11:29:49,617 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:28:39" (3/4) ... [2024-09-25 11:29:49,620 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 11:29:49,673 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 11:29:49,673 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 11:29:49,673 INFO L158 Benchmark]: Toolchain (without parser) took 70777.45ms. Allocated memory was 71.3MB in the beginning and 799.0MB in the end (delta: 727.7MB). Free memory was 43.2MB in the beginning and 447.9MB in the end (delta: -404.7MB). Peak memory consumption was 325.4MB. Max. memory is 16.1GB. [2024-09-25 11:29:49,676 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 50.3MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:29:49,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.86ms. Allocated memory is still 71.3MB. Free memory was 43.2MB in the beginning and 32.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 11:29:49,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.74ms. Allocated memory is still 71.3MB. Free memory was 32.2MB in the beginning and 51.3MB in the end (delta: -19.1MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2024-09-25 11:29:49,677 INFO L158 Benchmark]: Boogie Preprocessor took 33.78ms. Allocated memory is still 71.3MB. Free memory was 51.3MB in the beginning and 49.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:29:49,677 INFO L158 Benchmark]: RCFGBuilder took 300.61ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 38.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 11:29:49,677 INFO L158 Benchmark]: TraceAbstraction took 70103.55ms. Allocated memory was 71.3MB in the beginning and 799.0MB in the end (delta: 727.7MB). Free memory was 38.1MB in the beginning and 450.0MB in the end (delta: -411.9MB). Peak memory consumption was 316.4MB. Max. memory is 16.1GB. [2024-09-25 11:29:49,677 INFO L158 Benchmark]: Witness Printer took 56.20ms. Allocated memory is still 799.0MB. Free memory was 450.0MB in the beginning and 447.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:29:49,679 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 50.3MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.86ms. Allocated memory is still 71.3MB. Free memory was 43.2MB in the beginning and 32.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.74ms. Allocated memory is still 71.3MB. Free memory was 32.2MB in the beginning and 51.3MB in the end (delta: -19.1MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.78ms. Allocated memory is still 71.3MB. Free memory was 51.3MB in the beginning and 49.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 300.61ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 38.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 70103.55ms. Allocated memory was 71.3MB in the beginning and 799.0MB in the end (delta: 727.7MB). Free memory was 38.1MB in the beginning and 450.0MB in the end (delta: -411.9MB). Peak memory consumption was 316.4MB. Max. memory is 16.1GB. * Witness Printer took 56.20ms. Allocated memory is still 799.0MB. Free memory was 450.0MB in the beginning and 447.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.6s, OverallIterations: 16, TraceHistogramMax: 16, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1144 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 993 mSDsluCounter, 1525 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1333 mSDsCounter, 428 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1223 IncrementalHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 428 mSolverCounterUnsat, 192 mSDtfsCounter, 1223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2324 GetRequests, 1792 SyntacticMatches, 120 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5371 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=15, InterpolantAutomatonStates: 188, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 60.8s InterpolantComputationTime, 1843 NumberOfCodeBlocks, 1843 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 2610 ConstructedInterpolants, 0 QuantifiedInterpolants, 7780 SizeOfPredicates, 135 NumberOfNonLiveVariables, 2970 ConjunctsInSsa, 461 ConjunctsInUnsatCore, 45 InterpolantComputations, 2 PerfectInterpolantSequences, 5060/10830 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum. Ensures: (\result == ((long long) n + m)) RESULT: Ultimate proved your program to be correct! [2024-09-25 11:29:49,718 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE