./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.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/fibo_2calls_6-1.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 e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --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 11:27:01,579 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 11:27:01,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 11:27:01,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 11:27:01,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 11:27:01,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 11:27:01,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 11:27:01,700 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 11:27:01,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 11:27:01,701 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 11:27:01,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 11:27:01,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 11:27:01,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 11:27:01,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 11:27:01,706 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 11:27:01,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 11:27:01,707 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 11:27:01,707 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 11:27:01,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 11:27:01,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 11:27:01,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 11:27:01,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 11:27:01,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 11:27:01,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 11:27:01,713 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 11:27:01,713 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 11:27:01,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 11:27:01,714 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 11:27:01,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 11:27:01,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 11:27:01,714 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 11:27:01,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 11:27:01,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:27:01,715 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 11:27:01,715 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 11:27:01,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 11:27:01,716 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 11:27:01,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 11:27:01,716 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 11:27:01,717 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 11:27:01,717 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 11:27:01,719 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 11:27:01,720 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 -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe 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 11:27:02,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 11:27:02,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 11:27:02,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 11:27:02,063 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 11:27:02,063 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 11:27:02,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-09-25 11:27:03,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 11:27:03,749 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 11:27:03,751 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-09-25 11:27:03,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c9debc60f/384a149f7d554756bc44f37f7fcd6b85/FLAG65d007916 [2024-09-25 11:27:04,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c9debc60f/384a149f7d554756bc44f37f7fcd6b85 [2024-09-25 11:27:04,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 11:27:04,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 11:27:04,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 11:27:04,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 11:27:04,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 11:27:04,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa1a914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04, skipping insertion in model container [2024-09-25 11:27:04,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,166 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 11:27:04,319 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/fibo_2calls_6-1.c[946,959] [2024-09-25 11:27:04,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:27:04,343 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 11:27:04,358 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/fibo_2calls_6-1.c[946,959] [2024-09-25 11:27:04,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:27:04,376 INFO L204 MainTranslator]: Completed translation [2024-09-25 11:27:04,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04 WrapperNode [2024-09-25 11:27:04,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 11:27:04,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 11:27:04,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 11:27:04,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 11:27:04,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,396 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 11:27:04,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 11:27:04,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 11:27:04,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 11:27:04,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 11:27:04,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,432 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 11:27:04,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 11:27:04,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 11:27:04,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 11:27:04,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 11:27:04,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (1/1) ... [2024-09-25 11:27:04,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:27:04,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:04,475 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 11:27:04,478 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 11:27:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 11:27:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 11:27:04,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 11:27:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 11:27:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-25 11:27:04,518 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-25 11:27:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-25 11:27:04,520 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-25 11:27:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 11:27:04,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 11:27:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 11:27:04,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 11:27:04,578 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 11:27:04,581 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 11:27:04,733 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-25 11:27:04,737 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 11:27:04,764 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 11:27:04,765 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 11:27:04,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:27:04 BoogieIcfgContainer [2024-09-25 11:27:04,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 11:27:04,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 11:27:04,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 11:27:04,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 11:27:04,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:27:04" (1/3) ... [2024-09-25 11:27:04,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e901f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:27:04, skipping insertion in model container [2024-09-25 11:27:04,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:27:04" (2/3) ... [2024-09-25 11:27:04,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e901f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:27:04, skipping insertion in model container [2024-09-25 11:27:04,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:27:04" (3/3) ... [2024-09-25 11:27:04,778 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2024-09-25 11:27:04,806 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 11:27:04,807 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 11:27:04,876 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 11:27:04,883 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;@252fd265, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 11:27:04,884 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 11:27:04,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 11:27:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-25 11:27:04,894 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:04,894 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:04,894 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:04,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:04,900 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-09-25 11:27:04,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:04,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217488463] [2024-09-25 11:27:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:04,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,234 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 11:27:05,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217488463] [2024-09-25 11:27:05,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217488463] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:27:05,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:27:05,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:27:05,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359452827] [2024-09-25 11:27:05,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:27:05,244 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:27:05,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:27:05,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:27:05,268 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 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 11:27:05,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:05,370 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-25 11:27:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:27:05,373 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 11:27:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:05,380 INFO L225 Difference]: With dead ends: 44 [2024-09-25 11:27:05,380 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 11:27:05,383 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 11:27:05,388 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:05,389 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:27:05,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 11:27:05,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-25 11:27:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-25 11:27:05,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-25 11:27:05,440 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-09-25 11:27:05,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:05,441 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-25 11:27:05,441 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 11:27:05,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:05,442 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-25 11:27:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-25 11:27:05,443 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:05,443 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:05,443 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 11:27:05,444 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:05,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-09-25 11:27:05,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:05,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31189513] [2024-09-25 11:27:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:05,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,591 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 11:27:05,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:05,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31189513] [2024-09-25 11:27:05,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31189513] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:27:05,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:27:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:27:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605775249] [2024-09-25 11:27:05,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:27:05,595 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:27:05,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:05,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:27:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:27:05,597 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 11:27:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:05,656 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-25 11:27:05,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:27:05,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 14 [2024-09-25 11:27:05,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:05,657 INFO L225 Difference]: With dead ends: 36 [2024-09-25 11:27:05,658 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 11:27:05,658 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 11:27:05,659 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:05,660 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:27:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 11:27:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-25 11:27:05,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-25 11:27:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-25 11:27:05,668 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-09-25 11:27:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:05,669 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-25 11:27:05,669 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 11:27:05,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-25 11:27:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-25 11:27:05,670 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:05,671 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:05,671 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-25 11:27:05,671 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:05,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-09-25 11:27:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:05,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622995982] [2024-09-25 11:27:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:05,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-25 11:27:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,824 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 11:27:05,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:05,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622995982] [2024-09-25 11:27:05,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622995982] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:05,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340645056] [2024-09-25 11:27:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:05,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:05,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:05,829 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 11:27:05,830 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 11:27:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 11:27:05,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:05,998 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 11:27:05,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:06,213 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 11:27:06,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340645056] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:06,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:06,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-25 11:27:06,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721090578] [2024-09-25 11:27:06,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:06,215 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-25 11:27:06,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:06,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-25 11:27:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-25 11:27:06,217 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-25 11:27:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:06,387 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-09-25 11:27:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 11:27:06,388 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) Word has length 26 [2024-09-25 11:27:06,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:06,389 INFO L225 Difference]: With dead ends: 58 [2024-09-25 11:27:06,393 INFO L226 Difference]: Without dead ends: 34 [2024-09-25 11:27:06,394 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-25 11:27:06,395 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:06,396 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:27:06,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-25 11:27:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-25 11:27:06,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-25 11:27:06,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-09-25 11:27:06,410 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-09-25 11:27:06,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:06,411 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-09-25 11:27:06,411 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-25 11:27:06,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-09-25 11:27:06,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 11:27:06,412 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:06,412 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:06,426 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 11:27:06,616 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:06,617 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:06,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-09-25 11:27:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:06,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895017482] [2024-09-25 11:27:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:06,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:06,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:06,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:06,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:06,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:06,822 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 11:27:06,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:06,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895017482] [2024-09-25 11:27:06,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895017482] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:06,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401077300] [2024-09-25 11:27:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:06,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:06,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:06,825 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 11:27:06,827 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 11:27:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:06,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 11:27:06,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:06,922 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 11:27:06,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:07,116 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 11:27:07,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401077300] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:07,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:07,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-25 11:27:07,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630404492] [2024-09-25 11:27:07,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:07,121 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-25 11:27:07,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:07,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-25 11:27:07,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-25 11:27:07,122 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 11:27:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:07,327 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-09-25 11:27:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 11:27:07,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 27 [2024-09-25 11:27:07,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:07,330 INFO L225 Difference]: With dead ends: 56 [2024-09-25 11:27:07,330 INFO L226 Difference]: Without dead ends: 52 [2024-09-25 11:27:07,331 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-09-25 11:27:07,332 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:07,332 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 182 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:27:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-25 11:27:07,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-25 11:27:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 states have internal predecessors, (39), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-25 11:27:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-09-25 11:27:07,349 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-09-25 11:27:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:07,350 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-09-25 11:27:07,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 11:27:07,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:07,351 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-09-25 11:27:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-25 11:27:07,353 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:07,353 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:07,365 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 11:27:07,553 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:07,554 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:07,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-09-25 11:27:07,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:07,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201134824] [2024-09-25 11:27:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:07,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:07,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:07,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:07,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:07,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:07,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-25 11:27:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:07,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-25 11:27:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:27:07,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:07,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201134824] [2024-09-25 11:27:07,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201134824] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:07,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544412037] [2024-09-25 11:27:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:07,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:07,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:07,698 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 11:27:07,699 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 11:27:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:07,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-25 11:27:07,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-25 11:27:07,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 11:27:08,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544412037] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:08,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:08,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-09-25 11:27:08,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297224163] [2024-09-25 11:27:08,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:08,218 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 11:27:08,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:08,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 11:27:08,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-25 11:27:08,219 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-25 11:27:08,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:08,485 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-09-25 11:27:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 11:27:08,485 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) Word has length 39 [2024-09-25 11:27:08,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:08,487 INFO L225 Difference]: With dead ends: 112 [2024-09-25 11:27:08,487 INFO L226 Difference]: Without dead ends: 68 [2024-09-25 11:27:08,492 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-09-25 11:27:08,492 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:08,493 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 200 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:27:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-25 11:27:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-09-25 11:27:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 44 states have internal predecessors, (51), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) [2024-09-25 11:27:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-09-25 11:27:08,520 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-09-25 11:27:08,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:08,521 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-09-25 11:27:08,521 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-25 11:27:08,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:08,522 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-09-25 11:27:08,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-25 11:27:08,523 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:08,524 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:08,540 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 11:27:08,727 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:08,728 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:08,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-09-25 11:27:08,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:08,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106195523] [2024-09-25 11:27:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:08,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:08,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:08,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:08,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:08,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:08,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-25 11:27:08,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:08,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106195523] [2024-09-25 11:27:08,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106195523] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:08,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918881586] [2024-09-25 11:27:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:08,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:08,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:08,888 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 11:27:08,890 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 11:27:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:08,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-25 11:27:08,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:27:09,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 11:27:09,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918881586] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:09,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:09,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-09-25 11:27:09,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294783325] [2024-09-25 11:27:09,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:09,340 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 11:27:09,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 11:27:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-25 11:27:09,341 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-25 11:27:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:09,689 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-09-25 11:27:09,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 11:27:09,690 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) Word has length 40 [2024-09-25 11:27:09,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:09,693 INFO L225 Difference]: With dead ends: 182 [2024-09-25 11:27:09,693 INFO L226 Difference]: Without dead ends: 122 [2024-09-25 11:27:09,695 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-09-25 11:27:09,695 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:09,696 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 343 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 11:27:09,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-25 11:27:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-09-25 11:27:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.21875) internal successors, (78), 67 states have internal predecessors, (78), 23 states have call successors, (23), 9 states have call predecessors, (23), 15 states have return successors, (64), 26 states have call predecessors, (64), 22 states have call successors, (64) [2024-09-25 11:27:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-09-25 11:27:09,738 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-09-25 11:27:09,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:09,739 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-09-25 11:27:09,739 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-25 11:27:09,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:09,739 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-09-25 11:27:09,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-25 11:27:09,743 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:09,743 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:09,759 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 11:27:09,943 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:09,944 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:09,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-09-25 11:27:09,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:09,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687365585] [2024-09-25 11:27:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:09,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:09,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:09,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:10,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:10,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:10,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:10,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:10,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:10,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 11:27:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-25 11:27:10,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:10,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687365585] [2024-09-25 11:27:10,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687365585] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:10,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136664280] [2024-09-25 11:27:10,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:10,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:10,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:10,147 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 11:27:10,148 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 11:27:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:10,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 11:27:10,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-25 11:27:10,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:27:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136664280] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:10,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:10,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2024-09-25 11:27:10,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849227498] [2024-09-25 11:27:10,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:10,811 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 11:27:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 11:27:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-25 11:27:10,813 INFO L87 Difference]: Start difference. First operand 103 states and 165 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-25 11:27:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:11,164 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-09-25 11:27:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 11:27:11,165 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) Word has length 54 [2024-09-25 11:27:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:11,167 INFO L225 Difference]: With dead ends: 252 [2024-09-25 11:27:11,168 INFO L226 Difference]: Without dead ends: 155 [2024-09-25 11:27:11,172 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2024-09-25 11:27:11,173 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:11,173 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 256 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:27:11,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-25 11:27:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-09-25 11:27:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 26 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (67), 28 states have call predecessors, (67), 25 states have call successors, (67) [2024-09-25 11:27:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-09-25 11:27:11,212 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-09-25 11:27:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:11,213 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-09-25 11:27:11,213 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (19), 8 states have call predecessors, (19), 14 states have call successors, (19) [2024-09-25 11:27:11,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-09-25 11:27:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-25 11:27:11,221 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:11,222 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:11,240 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 11:27:11,422 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-25 11:27:11,423 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:11,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:11,423 INFO L85 PathProgramCache]: Analyzing trace with hash -805611050, now seen corresponding path program 1 times [2024-09-25 11:27:11,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:11,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796946024] [2024-09-25 11:27:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:11,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 11:27:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-25 11:27:11,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:11,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796946024] [2024-09-25 11:27:11,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796946024] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:11,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564146044] [2024-09-25 11:27:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:11,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:11,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:11,801 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 11:27:11,802 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 11:27:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:11,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 11:27:11,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-09-25 11:27:11,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 129 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-09-25 11:27:12,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564146044] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:12,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:12,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-09-25 11:27:12,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997958785] [2024-09-25 11:27:12,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:12,840 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-25 11:27:12,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:12,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-25 11:27:12,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-09-25 11:27:12,841 INFO L87 Difference]: Start difference. First operand 112 states and 180 transitions. Second operand has 23 states, 22 states have (on average 3.409090909090909) internal successors, (75), 23 states have internal predecessors, (75), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-09-25 11:27:13,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:13,249 INFO L93 Difference]: Finished difference Result 256 states and 494 transitions. [2024-09-25 11:27:13,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-25 11:27:13,249 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.409090909090909) internal successors, (75), 23 states have internal predecessors, (75), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) Word has length 110 [2024-09-25 11:27:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:13,251 INFO L225 Difference]: With dead ends: 256 [2024-09-25 11:27:13,251 INFO L226 Difference]: Without dead ends: 108 [2024-09-25 11:27:13,265 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 235 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 11:27:13,266 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 70 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:13,267 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 272 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 11:27:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-25 11:27:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2024-09-25 11:27:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 60 states have internal predecessors, (70), 18 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (39), 20 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-25 11:27:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2024-09-25 11:27:13,288 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 110 [2024-09-25 11:27:13,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:13,289 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2024-09-25 11:27:13,289 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.409090909090909) internal successors, (75), 23 states have internal predecessors, (75), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (27), 11 states have call predecessors, (27), 17 states have call successors, (27) [2024-09-25 11:27:13,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:13,289 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2024-09-25 11:27:13,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-25 11:27:13,293 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:13,293 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:13,310 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-25 11:27:13,497 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:13,498 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:13,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:13,498 INFO L85 PathProgramCache]: Analyzing trace with hash -273902236, now seen corresponding path program 1 times [2024-09-25 11:27:13,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:13,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410549055] [2024-09-25 11:27:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:13,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 11:27:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-25 11:27:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-25 11:27:13,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:13,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410549055] [2024-09-25 11:27:13,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410549055] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:13,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940617192] [2024-09-25 11:27:13,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:13,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:13,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:13,899 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 11:27:13,900 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 11:27:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:13,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 11:27:13,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 89 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-09-25 11:27:14,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 94 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-09-25 11:27:14,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940617192] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:14,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:14,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 21 [2024-09-25 11:27:14,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58634270] [2024-09-25 11:27:14,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:14,636 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 11:27:14,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 11:27:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-25 11:27:14,637 INFO L87 Difference]: Start difference. First operand 91 states and 127 transitions. Second operand has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (27), 12 states have call predecessors, (27), 14 states have call successors, (27) [2024-09-25 11:27:14,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:14,975 INFO L93 Difference]: Finished difference Result 182 states and 269 transitions. [2024-09-25 11:27:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-25 11:27:14,975 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (27), 12 states have call predecessors, (27), 14 states have call successors, (27) Word has length 123 [2024-09-25 11:27:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:14,977 INFO L225 Difference]: With dead ends: 182 [2024-09-25 11:27:14,977 INFO L226 Difference]: Without dead ends: 102 [2024-09-25 11:27:14,978 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 270 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-09-25 11:27:14,979 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:14,979 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 343 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:27:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-25 11:27:14,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-09-25 11:27:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 18 states have call successors, (18), 10 states have call predecessors, (18), 15 states have return successors, (40), 21 states have call predecessors, (40), 17 states have call successors, (40) [2024-09-25 11:27:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 131 transitions. [2024-09-25 11:27:15,000 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 131 transitions. Word has length 123 [2024-09-25 11:27:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:15,001 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 131 transitions. [2024-09-25 11:27:15,001 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (27), 12 states have call predecessors, (27), 14 states have call successors, (27) [2024-09-25 11:27:15,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 131 transitions. [2024-09-25 11:27:15,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-25 11:27:15,004 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:15,004 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:15,018 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 11:27:15,208 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:15,209 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:15,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:15,209 INFO L85 PathProgramCache]: Analyzing trace with hash -210930479, now seen corresponding path program 1 times [2024-09-25 11:27:15,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:15,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834031774] [2024-09-25 11:27:15,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:15,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 11:27:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 11:27:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 146 proven. 332 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-09-25 11:27:15,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834031774] [2024-09-25 11:27:15,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834031774] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:15,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516210997] [2024-09-25 11:27:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:15,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:15,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:15,993 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 11:27:15,995 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 11:27:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:16,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 11:27:16,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 173 proven. 199 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2024-09-25 11:27:16,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 173 proven. 213 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2024-09-25 11:27:17,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516210997] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:17,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:17,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 15] total 31 [2024-09-25 11:27:17,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078309931] [2024-09-25 11:27:17,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:17,527 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-25 11:27:17,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:17,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-25 11:27:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2024-09-25 11:27:17,529 INFO L87 Difference]: Start difference. First operand 96 states and 131 transitions. Second operand has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 23 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-25 11:27:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:18,189 INFO L93 Difference]: Finished difference Result 244 states and 433 transitions. [2024-09-25 11:27:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-25 11:27:18,190 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 23 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) Word has length 204 [2024-09-25 11:27:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:18,193 INFO L225 Difference]: With dead ends: 244 [2024-09-25 11:27:18,193 INFO L226 Difference]: Without dead ends: 126 [2024-09-25 11:27:18,195 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 451 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=328, Invalid=1742, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 11:27:18,195 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 70 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:18,196 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 512 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 11:27:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-25 11:27:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 106. [2024-09-25 11:27:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 70 states have internal predecessors, (82), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (37), 21 states have call predecessors, (37), 19 states have call successors, (37) [2024-09-25 11:27:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-09-25 11:27:18,227 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 204 [2024-09-25 11:27:18,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:18,227 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-09-25 11:27:18,228 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 23 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (39), 19 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-25 11:27:18,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:18,228 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-09-25 11:27:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-09-25 11:27:18,230 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:18,230 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:18,248 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-25 11:27:18,434 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:18,435 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:18,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:18,436 INFO L85 PathProgramCache]: Analyzing trace with hash -134939570, now seen corresponding path program 2 times [2024-09-25 11:27:18,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:18,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838229419] [2024-09-25 11:27:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:18,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 11:27:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 11:27:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:18,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 11:27:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 11:27:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 130 proven. 259 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2024-09-25 11:27:19,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838229419] [2024-09-25 11:27:19,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838229419] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850148936] [2024-09-25 11:27:19,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:27:19,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:19,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:19,063 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 11:27:19,064 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 11:27:19,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:27:19,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:27:19,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 11:27:19,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 203 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2024-09-25 11:27:19,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 98 proven. 208 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2024-09-25 11:27:20,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850148936] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:20,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:20,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 22 [2024-09-25 11:27:20,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485121316] [2024-09-25 11:27:20,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:20,097 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 11:27:20,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:20,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 11:27:20,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-09-25 11:27:20,099 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 22 states, 20 states have (on average 3.65) internal successors, (73), 22 states have internal predecessors, (73), 15 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2024-09-25 11:27:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:20,425 INFO L93 Difference]: Finished difference Result 222 states and 300 transitions. [2024-09-25 11:27:20,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 11:27:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.65) internal successors, (73), 22 states have internal predecessors, (73), 15 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) Word has length 231 [2024-09-25 11:27:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:20,428 INFO L225 Difference]: With dead ends: 222 [2024-09-25 11:27:20,428 INFO L226 Difference]: Without dead ends: 129 [2024-09-25 11:27:20,429 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 517 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2024-09-25 11:27:20,429 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:20,429 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 340 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:27:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-25 11:27:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 106. [2024-09-25 11:27:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 70 states have internal predecessors, (82), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (34), 21 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-25 11:27:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 136 transitions. [2024-09-25 11:27:20,444 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 136 transitions. Word has length 231 [2024-09-25 11:27:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:20,445 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 136 transitions. [2024-09-25 11:27:20,445 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.65) internal successors, (73), 22 states have internal predecessors, (73), 15 states have call successors, (24), 1 states have call predecessors, (24), 8 states have return successors, (27), 13 states have call predecessors, (27), 15 states have call successors, (27) [2024-09-25 11:27:20,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2024-09-25 11:27:20,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-25 11:27:20,447 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:20,447 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 14, 14, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:20,464 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 11:27:20,651 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-25 11:27:20,652 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:20,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2126407970, now seen corresponding path program 3 times [2024-09-25 11:27:20,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:20,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989188199] [2024-09-25 11:27:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:20,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:20,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:20,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 11:27:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 11:27:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 11:27:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 193 proven. 340 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-09-25 11:27:21,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:21,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989188199] [2024-09-25 11:27:21,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989188199] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:21,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470953956] [2024-09-25 11:27:21,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:27:21,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:21,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:21,432 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 11:27:21,434 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 11:27:21,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-25 11:27:21,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:27:21,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 11:27:21,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 294 proven. 58 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-09-25 11:27:21,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 294 proven. 66 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2024-09-25 11:27:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470953956] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:22,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10, 13] total 31 [2024-09-25 11:27:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946687087] [2024-09-25 11:27:22,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:22,625 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-25 11:27:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-25 11:27:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-09-25 11:27:22,626 INFO L87 Difference]: Start difference. First operand 106 states and 136 transitions. Second operand has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 31 states have internal predecessors, (88), 19 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (37), 23 states have call predecessors, (37), 19 states have call successors, (37) [2024-09-25 11:27:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:23,175 INFO L93 Difference]: Finished difference Result 249 states and 363 transitions. [2024-09-25 11:27:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-25 11:27:23,175 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 31 states have internal predecessors, (88), 19 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (37), 23 states have call predecessors, (37), 19 states have call successors, (37) Word has length 218 [2024-09-25 11:27:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:23,178 INFO L225 Difference]: With dead ends: 249 [2024-09-25 11:27:23,178 INFO L226 Difference]: Without dead ends: 149 [2024-09-25 11:27:23,179 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 484 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=407, Invalid=2349, Unknown=0, NotChecked=0, Total=2756 [2024-09-25 11:27:23,180 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 88 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:23,180 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 379 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 11:27:23,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-09-25 11:27:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 130. [2024-09-25 11:27:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.1) internal successors, (99), 86 states have internal predecessors, (99), 24 states have call successors, (24), 20 states have call predecessors, (24), 15 states have return successors, (46), 23 states have call predecessors, (46), 23 states have call successors, (46) [2024-09-25 11:27:23,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 169 transitions. [2024-09-25 11:27:23,197 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 169 transitions. Word has length 218 [2024-09-25 11:27:23,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:23,197 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 169 transitions. [2024-09-25 11:27:23,197 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.933333333333333) internal successors, (88), 31 states have internal predecessors, (88), 19 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (37), 23 states have call predecessors, (37), 19 states have call successors, (37) [2024-09-25 11:27:23,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:23,198 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 169 transitions. [2024-09-25 11:27:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-09-25 11:27:23,199 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:23,199 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:23,215 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 11:27:23,400 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-25 11:27:23,400 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:23,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:23,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2101186279, now seen corresponding path program 4 times [2024-09-25 11:27:23,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:23,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617888435] [2024-09-25 11:27:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:23,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 11:27:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 11:27:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 165 proven. 92 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-09-25 11:27:23,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:23,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617888435] [2024-09-25 11:27:23,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617888435] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:23,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273694455] [2024-09-25 11:27:23,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 11:27:23,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:23,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:23,847 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 11:27:23,848 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 11:27:23,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 11:27:23,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:27:23,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 11:27:23,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 141 proven. 34 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-09-25 11:27:24,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 143 proven. 37 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-25 11:27:24,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273694455] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:24,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:24,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 11] total 24 [2024-09-25 11:27:24,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552803530] [2024-09-25 11:27:24,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:24,530 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-25 11:27:24,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:24,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-25 11:27:24,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2024-09-25 11:27:24,532 INFO L87 Difference]: Start difference. First operand 130 states and 169 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 16 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (29), 16 states have call predecessors, (29), 16 states have call successors, (29) [2024-09-25 11:27:24,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:24,787 INFO L93 Difference]: Finished difference Result 264 states and 347 transitions. [2024-09-25 11:27:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 11:27:24,788 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 16 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (29), 16 states have call predecessors, (29), 16 states have call successors, (29) Word has length 150 [2024-09-25 11:27:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:24,789 INFO L225 Difference]: With dead ends: 264 [2024-09-25 11:27:24,789 INFO L226 Difference]: Without dead ends: 144 [2024-09-25 11:27:24,791 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 332 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-09-25 11:27:24,791 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 59 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:24,792 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 252 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:27:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-25 11:27:24,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2024-09-25 11:27:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.1) internal successors, (99), 86 states have internal predecessors, (99), 24 states have call successors, (24), 20 states have call predecessors, (24), 15 states have return successors, (39), 23 states have call predecessors, (39), 23 states have call successors, (39) [2024-09-25 11:27:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2024-09-25 11:27:24,808 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 150 [2024-09-25 11:27:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:24,809 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2024-09-25 11:27:24,809 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 16 states have call successors, (25), 1 states have call predecessors, (25), 9 states have return successors, (29), 16 states have call predecessors, (29), 16 states have call successors, (29) [2024-09-25 11:27:24,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2024-09-25 11:27:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-25 11:27:24,812 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:24,812 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:24,829 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 11:27:25,013 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:25,014 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:25,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:25,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1073615655, now seen corresponding path program 5 times [2024-09-25 11:27:25,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:25,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406805876] [2024-09-25 11:27:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:25,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 11:27:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-25 11:27:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-25 11:27:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 155 proven. 209 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2024-09-25 11:27:25,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406805876] [2024-09-25 11:27:25,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406805876] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873395469] [2024-09-25 11:27:25,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 11:27:25,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:25,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:25,509 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 11:27:25,511 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 11:27:25,632 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-25 11:27:25,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:27:25,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 11:27:25,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 638 proven. 46 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2024-09-25 11:27:25,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 143 proven. 256 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2024-09-25 11:27:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873395469] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:26,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:26,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-09-25 11:27:26,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289729087] [2024-09-25 11:27:26,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:26,597 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-25 11:27:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:26,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-25 11:27:26,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-09-25 11:27:26,598 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 25 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 14 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2024-09-25 11:27:26,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:26,834 INFO L93 Difference]: Finished difference Result 255 states and 341 transitions. [2024-09-25 11:27:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 11:27:26,835 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 14 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) Word has length 204 [2024-09-25 11:27:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:26,837 INFO L225 Difference]: With dead ends: 255 [2024-09-25 11:27:26,837 INFO L226 Difference]: Without dead ends: 135 [2024-09-25 11:27:26,838 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 452 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2024-09-25 11:27:26,839 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 33 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:26,839 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 319 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:27:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-09-25 11:27:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2024-09-25 11:27:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.086021505376344) internal successors, (101), 88 states have internal predecessors, (101), 24 states have call successors, (24), 21 states have call predecessors, (24), 15 states have return successors, (36), 23 states have call predecessors, (36), 23 states have call successors, (36) [2024-09-25 11:27:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2024-09-25 11:27:26,856 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 204 [2024-09-25 11:27:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:26,856 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2024-09-25 11:27:26,856 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 14 states have call successors, (31), 2 states have call predecessors, (31), 9 states have return successors, (34), 14 states have call predecessors, (34), 14 states have call successors, (34) [2024-09-25 11:27:26,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2024-09-25 11:27:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-09-25 11:27:26,859 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:26,859 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:26,876 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 11:27:27,063 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-25 11:27:27,064 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:27,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:27,064 INFO L85 PathProgramCache]: Analyzing trace with hash 982134510, now seen corresponding path program 6 times [2024-09-25 11:27:27,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:27,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290871029] [2024-09-25 11:27:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:27,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:27,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:27,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:27,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 11:27:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 11:27:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-25 11:27:28,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:28,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290871029] [2024-09-25 11:27:28,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290871029] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:28,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978915052] [2024-09-25 11:27:28,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 11:27:28,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:28,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:28,765 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 11:27:28,767 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 11:27:28,905 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-09-25 11:27:28,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:27:28,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-09-25 11:27:28,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-25 11:27:29,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-09-25 11:27:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978915052] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:29,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2024-09-25 11:27:29,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600363463] [2024-09-25 11:27:29,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:29,893 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-25 11:27:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-25 11:27:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 11:27:29,894 INFO L87 Difference]: Start difference. First operand 133 states and 161 transitions. Second operand has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-25 11:27:30,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:30,150 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2024-09-25 11:27:30,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-25 11:27:30,151 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) Word has length 177 [2024-09-25 11:27:30,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:30,153 INFO L225 Difference]: With dead ends: 140 [2024-09-25 11:27:30,153 INFO L226 Difference]: Without dead ends: 136 [2024-09-25 11:27:30,153 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 11:27:30,154 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:30,156 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1445 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:27:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-25 11:27:30,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2024-09-25 11:27:30,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 93 states have (on average 1.086021505376344) internal successors, (101), 88 states have internal predecessors, (101), 24 states have call successors, (24), 21 states have call predecessors, (24), 15 states have return successors, (35), 23 states have call predecessors, (35), 23 states have call successors, (35) [2024-09-25 11:27:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2024-09-25 11:27:30,176 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 177 [2024-09-25 11:27:30,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:30,177 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2024-09-25 11:27:30,177 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-25 11:27:30,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2024-09-25 11:27:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-25 11:27:30,179 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:30,179 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:30,196 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 11:27:30,379 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-25 11:27:30,380 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:30,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash -790133168, now seen corresponding path program 7 times [2024-09-25 11:27:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:30,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269482693] [2024-09-25 11:27:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:30,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-25 11:27:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-25 11:27:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:30,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 11:27:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:27:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-25 11:27:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 11:27:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 221 proven. 250 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2024-09-25 11:27:31,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:31,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269482693] [2024-09-25 11:27:31,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269482693] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:31,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823799880] [2024-09-25 11:27:31,053 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 11:27:31,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:31,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:31,055 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 11:27:31,058 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 11:27:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:31,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-25 11:27:31,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 349 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-09-25 11:27:31,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 109 proven. 370 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2024-09-25 11:27:33,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823799880] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:33,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:33,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 17] total 31 [2024-09-25 11:27:33,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314440889] [2024-09-25 11:27:33,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:33,019 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-25 11:27:33,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:33,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-25 11:27:33,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-09-25 11:27:33,021 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 17 states have call predecessors, (39), 24 states have call successors, (39) [2024-09-25 11:27:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:33,393 INFO L93 Difference]: Finished difference Result 251 states and 311 transitions. [2024-09-25 11:27:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-25 11:27:33,393 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 17 states have call predecessors, (39), 24 states have call successors, (39) Word has length 218 [2024-09-25 11:27:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:33,395 INFO L225 Difference]: With dead ends: 251 [2024-09-25 11:27:33,395 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 11:27:33,396 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 479 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 11:27:33,397 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 44 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 11:27:33,397 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 422 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 11:27:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 11:27:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 11:27:33,398 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 11:27:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 11:27:33,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 218 [2024-09-25 11:27:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:33,399 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 11:27:33,399 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (39), 17 states have call predecessors, (39), 24 states have call successors, (39) [2024-09-25 11:27:33,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 11:27:33,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 11:27:33,402 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 11:27:33,420 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-25 11:27:33,603 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-25 11:27:33,606 INFO L408 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:33,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 11:27:40,326 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 11:27:40,338 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:27:40,339 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:27:40,339 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:27:40,339 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:27:40,339 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:27:40,340 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:27:40,340 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:27:40,340 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:27:40,345 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:27:40,345 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:27:40,346 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:27:40,346 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:27:40,346 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:27:40,346 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:27:40,346 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:27:40,347 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:27:40,359 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:27:40,359 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:27:40,359 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:27:40,359 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:27:40,359 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:27:40,359 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:27:40,360 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-25 11:27:40,360 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:27:40,360 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:27:40,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:27:40 BoogieIcfgContainer [2024-09-25 11:27:40,360 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 11:27:40,361 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 11:27:40,361 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 11:27:40,361 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 11:27:40,362 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:27:04" (3/4) ... [2024-09-25 11:27:40,364 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 11:27:40,426 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 11:27:40,426 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 11:27:40,427 INFO L158 Benchmark]: Toolchain (without parser) took 36286.98ms. Allocated memory was 67.1MB in the beginning and 645.9MB in the end (delta: 578.8MB). Free memory was 35.2MB in the beginning and 280.3MB in the end (delta: -245.1MB). Peak memory consumption was 336.0MB. Max. memory is 16.1GB. [2024-09-25 11:27:40,427 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 44.0MB. Free memory is still 22.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:27:40,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.03ms. Allocated memory is still 67.1MB. Free memory was 35.0MB in the beginning and 41.7MB in the end (delta: -6.6MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2024-09-25 11:27:40,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.57ms. Allocated memory is still 67.1MB. Free memory was 41.7MB in the beginning and 40.7MB in the end (delta: 943.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:27:40,427 INFO L158 Benchmark]: Boogie Preprocessor took 44.03ms. Allocated memory is still 67.1MB. Free memory was 40.4MB in the beginning and 39.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:27:40,428 INFO L158 Benchmark]: RCFGBuilder took 323.42ms. Allocated memory is still 67.1MB. Free memory was 39.0MB in the beginning and 27.0MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 11:27:40,428 INFO L158 Benchmark]: TraceAbstraction took 35591.52ms. Allocated memory was 67.1MB in the beginning and 645.9MB in the end (delta: 578.8MB). Free memory was 26.1MB in the beginning and 282.4MB in the end (delta: -256.3MB). Peak memory consumption was 372.7MB. Max. memory is 16.1GB. [2024-09-25 11:27:40,428 INFO L158 Benchmark]: Witness Printer took 65.14ms. Allocated memory is still 645.9MB. Free memory was 282.4MB in the beginning and 280.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:27:40,429 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 44.0MB. Free memory is still 22.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.03ms. Allocated memory is still 67.1MB. Free memory was 35.0MB in the beginning and 41.7MB in the end (delta: -6.6MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.57ms. Allocated memory is still 67.1MB. Free memory was 41.7MB in the beginning and 40.7MB in the end (delta: 943.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.03ms. Allocated memory is still 67.1MB. Free memory was 40.4MB in the beginning and 39.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 323.42ms. Allocated memory is still 67.1MB. Free memory was 39.0MB in the beginning and 27.0MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 35591.52ms. Allocated memory was 67.1MB in the beginning and 645.9MB in the end (delta: 578.8MB). Free memory was 26.1MB in the beginning and 282.4MB in the end (delta: -256.3MB). Peak memory consumption was 372.7MB. Max. memory is 16.1GB. * Witness Printer took 65.14ms. Allocated memory is still 645.9MB. Free memory was 282.4MB in the beginning and 280.3MB 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 - 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: Expression type not yet supported in backtranslation: QuantifierExpression - 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: 41]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.8s, OverallIterations: 16, TraceHistogramMax: 17, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 697 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 628 mSDsluCounter, 5616 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5089 mSDsCounter, 577 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6317 IncrementalHoareTripleChecker+Invalid, 6894 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 577 mSolverCounterUnsat, 527 mSDtfsCounter, 6317 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4525 GetRequests, 4050 SyntacticMatches, 62 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3495 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=14, InterpolantAutomatonStates: 315, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 176 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 3669 NumberOfCodeBlocks, 3436 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 5446 ConstructedInterpolants, 0 QuantifiedInterpolants, 9330 SizeOfPredicates, 44 NumberOfNonLiveVariables, 3742 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 44 InterpolantComputations, 2 PerfectInterpolantSequences, 19216/24261 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: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Ensures: (((((((((2 == \result) && (3 == n)) || ((\result == 1) && (n == 1))) || (5 < n)) || ((3 == \result) && (n == 4))) || (n < 1)) || ((5 == \result) && (5 == n))) || ((\result == 1) && (2 == n))) && (((\result == 0) || (n == 1)) || (1 < n))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: ((\result == 0) || (0 < n)) RESULT: Ultimate proved your program to be correct! [2024-09-25 11:27:40,460 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE