./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 19:19:45,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:19:45,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:19:45,753 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:19:45,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:19:45,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:19:45,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:19:45,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:19:45,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:19:45,787 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:19:45,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:19:45,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:19:45,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:19:45,790 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:19:45,791 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:19:45,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:19:45,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:19:45,792 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:19:45,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:19:45,792 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:19:45,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:19:45,793 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:19:45,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:19:45,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:19:45,796 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:19:45,796 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:19:45,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:19:45,797 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:19:45,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:19:45,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:19:45,798 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:19:45,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:19:45,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:19:45,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:19:45,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:19:45,799 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:19:45,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:19:45,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:19:45,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:19:45,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:19:45,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:19:45,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:19:45,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 19:19:46,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:19:46,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:19:46,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:19:46,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:19:46,075 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:19:46,075 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-09-17 19:19:47,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:19:47,711 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:19:47,712 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-09-17 19:19:47,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/5dc8eaf5f/7deed0d52bad48d6a2f7154f43792a76/FLAG955d75cc3 [2024-09-17 19:19:48,101 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/5dc8eaf5f/7deed0d52bad48d6a2f7154f43792a76 [2024-09-17 19:19:48,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:19:48,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 19:19:48,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:19:48,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:19:48,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:19:48,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cab2f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48, skipping insertion in model container [2024-09-17 19:19:48,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,133 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:19:48,275 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_5-1.c[946,959] [2024-09-17 19:19:48,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:19:48,291 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 19:19:48,307 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_5-1.c[946,959] [2024-09-17 19:19:48,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:19:48,324 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:19:48,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48 WrapperNode [2024-09-17 19:19:48,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:19:48,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:19:48,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:19:48,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:19:48,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,351 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 19:19:48,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:19:48,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:19:48,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:19:48,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:19:48,360 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,361 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,374 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]. [2024-09-17 19:19:48,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,380 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:19:48,381 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:19:48,381 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:19:48,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:19:48,382 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (1/1) ... [2024-09-17 19:19:48,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:19:48,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:19:48,414 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) [2024-09-17 19:19:48,419 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 [2024-09-17 19:19:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:19:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 19:19:48,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 19:19:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:19:48,465 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-17 19:19:48,466 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-17 19:19:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-17 19:19:48,467 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-17 19:19:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 19:19:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 19:19:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:19:48,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:19:48,535 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:19:48,537 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:19:48,705 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-17 19:19:48,705 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:19:48,735 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:19:48,736 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-17 19:19:48,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:19:48 BoogieIcfgContainer [2024-09-17 19:19:48,736 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:19:48,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:19:48,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:19:48,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:19:48,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:19:48" (1/3) ... [2024-09-17 19:19:48,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4c7d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:19:48, skipping insertion in model container [2024-09-17 19:19:48,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:19:48" (2/3) ... [2024-09-17 19:19:48,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4c7d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:19:48, skipping insertion in model container [2024-09-17 19:19:48,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:19:48" (3/3) ... [2024-09-17 19:19:48,749 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2024-09-17 19:19:48,766 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:19:48,766 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 19:19:48,832 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:19:48,840 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;@f37a6ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:19:48,840 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 19:19:48,844 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) [2024-09-17 19:19:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-17 19:19:48,851 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:19:48,851 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:19:48,852 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:19:48,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:48,858 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-09-17 19:19:48,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:19:48,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953156477] [2024-09-17 19:19:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:48,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:19:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:19:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:19:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:19:49,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:19:49,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953156477] [2024-09-17 19:19:49,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953156477] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:19:49,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:19:49,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:19:49,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638120950] [2024-09-17 19:19:49,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:19:49,150 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:19:49,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:19:49,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:19:49,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:19:49,177 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) [2024-09-17 19:19:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:19:49,275 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-17 19:19:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:19:49,277 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 [2024-09-17 19:19:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:19:49,284 INFO L225 Difference]: With dead ends: 44 [2024-09-17 19:19:49,284 INFO L226 Difference]: Without dead ends: 32 [2024-09-17 19:19:49,287 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 [2024-09-17 19:19:49,289 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 [2024-09-17 19:19:49,290 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] [2024-09-17 19:19:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-17 19:19:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-17 19:19:49,323 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) [2024-09-17 19:19:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-17 19:19:49,326 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-09-17 19:19:49,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:19:49,326 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-17 19:19:49,326 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) [2024-09-17 19:19:49,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-17 19:19:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-17 19:19:49,328 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:19:49,328 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:19:49,329 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:19:49,329 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:19:49,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:49,329 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-09-17 19:19:49,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:19:49,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745598434] [2024-09-17 19:19:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:49,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:19:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:19:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:19:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:19:49,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:19:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745598434] [2024-09-17 19:19:49,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745598434] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:19:49,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:19:49,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:19:49,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414379059] [2024-09-17 19:19:49,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:19:49,427 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:19:49,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:19:49,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:19:49,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:19:49,432 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) [2024-09-17 19:19:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:19:49,509 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-17 19:19:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:19:49,510 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 [2024-09-17 19:19:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:19:49,511 INFO L225 Difference]: With dead ends: 36 [2024-09-17 19:19:49,512 INFO L226 Difference]: Without dead ends: 32 [2024-09-17 19:19:49,512 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 [2024-09-17 19:19:49,513 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:19:49,514 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:19:49,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-17 19:19:49,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-17 19:19:49,523 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) [2024-09-17 19:19:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-17 19:19:49,524 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-09-17 19:19:49,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:19:49,525 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-17 19:19:49,525 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) [2024-09-17 19:19:49,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:49,526 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-17 19:19:49,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-17 19:19:49,527 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:19:49,527 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] [2024-09-17 19:19:49,527 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 19:19:49,531 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:19:49,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:49,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-09-17 19:19:49,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:19:49,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643612496] [2024-09-17 19:19:49,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:49,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:19:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:19:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:19:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-17 19:19:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-17 19:19:49,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:19:49,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643612496] [2024-09-17 19:19:49,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643612496] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:19:49,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821657470] [2024-09-17 19:19:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:49,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:19:49,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:19:49,818 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) [2024-09-17 19:19:49,820 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:19:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:49,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-17 19:19:49,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:19:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-17 19:19:49,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:19:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-17 19:19:50,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821657470] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:19:50,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:19:50,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-17 19:19:50,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867383601] [2024-09-17 19:19:50,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:19:50,247 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 19:19:50,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:19:50,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 19:19:50,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-17 19:19:50,252 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) [2024-09-17 19:19:50,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:19:50,404 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-09-17 19:19:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 19:19:50,405 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 [2024-09-17 19:19:50,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:19:50,406 INFO L225 Difference]: With dead ends: 58 [2024-09-17 19:19:50,406 INFO L226 Difference]: Without dead ends: 34 [2024-09-17 19:19:50,407 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 [2024-09-17 19:19:50,410 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 [2024-09-17 19:19:50,411 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] [2024-09-17 19:19:50,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-17 19:19:50,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-17 19:19:50,425 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) [2024-09-17 19:19:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-09-17 19:19:50,429 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-09-17 19:19:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:19:50,430 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-09-17 19:19:50,430 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) [2024-09-17 19:19:50,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-09-17 19:19:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-17 19:19:50,432 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:19:50,433 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] [2024-09-17 19:19:50,449 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 19:19:50,633 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 [2024-09-17 19:19:50,634 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:19:50,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-09-17 19:19:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:19:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346557054] [2024-09-17 19:19:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:19:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:50,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:19:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:50,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:19:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:50,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:50,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-17 19:19:50,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:19:50,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346557054] [2024-09-17 19:19:50,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346557054] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:19:50,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784753063] [2024-09-17 19:19:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:50,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:19:50,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:19:50,792 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) [2024-09-17 19:19:50,795 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:19:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:50,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-17 19:19:50,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:19:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-17 19:19:50,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:19:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-17 19:19:51,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784753063] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:19:51,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:19:51,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-17 19:19:51,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522394879] [2024-09-17 19:19:51,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:19:51,091 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 19:19:51,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:19:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 19:19:51,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-17 19:19:51,093 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) [2024-09-17 19:19:51,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:19:51,305 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-09-17 19:19:51,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 19:19:51,306 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 [2024-09-17 19:19:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:19:51,308 INFO L225 Difference]: With dead ends: 56 [2024-09-17 19:19:51,308 INFO L226 Difference]: Without dead ends: 52 [2024-09-17 19:19:51,309 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 [2024-09-17 19:19:51,310 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 [2024-09-17 19:19:51,310 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] [2024-09-17 19:19:51,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-17 19:19:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-17 19:19:51,321 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) [2024-09-17 19:19:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-09-17 19:19:51,323 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-09-17 19:19:51,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:19:51,323 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-09-17 19:19:51,323 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) [2024-09-17 19:19:51,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-09-17 19:19:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-17 19:19:51,326 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:19:51,326 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] [2024-09-17 19:19:51,344 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-17 19:19:51,530 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 [2024-09-17 19:19:51,531 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:19:51,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:51,531 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-09-17 19:19:51,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:19:51,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19239475] [2024-09-17 19:19:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:51,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:19:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:51,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:19:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:51,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:19:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:51,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:51,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:51,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-17 19:19:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:51,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:19:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-17 19:19:51,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:19:51,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19239475] [2024-09-17 19:19:51,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19239475] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:19:51,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934715315] [2024-09-17 19:19:51,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:51,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:19:51,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:19:51,655 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) [2024-09-17 19:19:51,657 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 19:19:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:51,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-17 19:19:51,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:19:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-17 19:19:51,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:19:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:19:52,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934715315] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:19:52,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:19:52,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-09-17 19:19:52,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973286983] [2024-09-17 19:19:52,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:19:52,185 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-17 19:19:52,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:19:52,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-17 19:19:52,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-17 19:19:52,187 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) [2024-09-17 19:19:52,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:19:52,440 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-09-17 19:19:52,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-17 19:19:52,440 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 [2024-09-17 19:19:52,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:19:52,443 INFO L225 Difference]: With dead ends: 112 [2024-09-17 19:19:52,443 INFO L226 Difference]: Without dead ends: 68 [2024-09-17 19:19:52,444 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 [2024-09-17 19:19:52,444 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 [2024-09-17 19:19:52,445 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] [2024-09-17 19:19:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-17 19:19:52,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-09-17 19:19:52,459 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) [2024-09-17 19:19:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-09-17 19:19:52,460 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-09-17 19:19:52,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:19:52,461 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-09-17 19:19:52,461 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) [2024-09-17 19:19:52,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-09-17 19:19:52,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-17 19:19:52,464 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:19:52,464 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] [2024-09-17 19:19:52,480 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 19:19:52,665 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 [2024-09-17 19:19:52,666 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:19:52,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:52,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-09-17 19:19:52,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:19:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714463842] [2024-09-17 19:19:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:19:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:52,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:19:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:52,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:19:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:52,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:52,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:52,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:52,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:19:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-17 19:19:52,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:19:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714463842] [2024-09-17 19:19:52,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714463842] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:19:52,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482349081] [2024-09-17 19:19:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:52,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:19:52,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:19:52,853 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) [2024-09-17 19:19:52,855 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 19:19:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:52,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-17 19:19:52,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:19:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-17 19:19:52,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:19:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:19:53,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482349081] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:19:53,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:19:53,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-09-17 19:19:53,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67378321] [2024-09-17 19:19:53,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:19:53,290 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-17 19:19:53,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:19:53,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-17 19:19:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-17 19:19:53,291 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) [2024-09-17 19:19:53,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:19:53,612 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-09-17 19:19:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-17 19:19:53,612 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 [2024-09-17 19:19:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:19:53,615 INFO L225 Difference]: With dead ends: 182 [2024-09-17 19:19:53,616 INFO L226 Difference]: Without dead ends: 122 [2024-09-17 19:19:53,620 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 [2024-09-17 19:19:53,621 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:19:53,621 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 343 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:19:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-17 19:19:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-09-17 19:19:53,653 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) [2024-09-17 19:19:53,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-09-17 19:19:53,656 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-09-17 19:19:53,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:19:53,656 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-09-17 19:19:53,656 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) [2024-09-17 19:19:53,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:53,657 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-09-17 19:19:53,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-17 19:19:53,662 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:19:53,662 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] [2024-09-17 19:19:53,678 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-17 19:19:53,862 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 [2024-09-17 19:19:53,862 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:19:53,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-09-17 19:19:53,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:19:53,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727099979] [2024-09-17 19:19:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:53,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:19:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:53,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:19:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:53,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:19:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:53,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:53,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:54,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:54,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:54,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:19:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:54,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-17 19:19:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-17 19:19:54,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:19:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727099979] [2024-09-17 19:19:54,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727099979] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:19:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748830028] [2024-09-17 19:19:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:54,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:19:54,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:19:54,077 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) [2024-09-17 19:19:54,078 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 19:19:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:54,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-17 19:19:54,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:19:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-17 19:19:54,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:19:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 19:19:54,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748830028] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:19:54,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:19:54,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 19 [2024-09-17 19:19:54,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828934146] [2024-09-17 19:19:54,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:19:54,705 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-17 19:19:54,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:19:54,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-17 19:19:54,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-09-17 19:19:54,707 INFO L87 Difference]: Start difference. First operand 103 states and 165 transitions. Second operand has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (18), 8 states have call predecessors, (18), 13 states have call successors, (18) [2024-09-17 19:19:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:19:55,077 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-09-17 19:19:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-17 19:19:55,078 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (18), 8 states have call predecessors, (18), 13 states have call successors, (18) Word has length 54 [2024-09-17 19:19:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:19:55,081 INFO L225 Difference]: With dead ends: 252 [2024-09-17 19:19:55,081 INFO L226 Difference]: Without dead ends: 155 [2024-09-17 19:19:55,083 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2024-09-17 19:19:55,087 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 19:19:55,087 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 348 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 19:19:55,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-17 19:19:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-09-17 19:19:55,138 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) [2024-09-17 19:19:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-09-17 19:19:55,142 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-09-17 19:19:55,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:19:55,142 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-09-17 19:19:55,143 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (18), 8 states have call predecessors, (18), 13 states have call successors, (18) [2024-09-17 19:19:55,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-09-17 19:19:55,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-17 19:19:55,149 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:19:55,149 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:19:55,166 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-17 19:19:55,349 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 [2024-09-17 19:19:55,350 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:19:55,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:55,350 INFO L85 PathProgramCache]: Analyzing trace with hash 2073072172, now seen corresponding path program 1 times [2024-09-17 19:19:55,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:19:55,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505883559] [2024-09-17 19:19:55,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:55,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:19:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:19:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:19:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:19:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 19:19:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:19:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-09-17 19:19:55,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:19:55,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505883559] [2024-09-17 19:19:55,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505883559] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:19:55,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770836204] [2024-09-17 19:19:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:55,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:19:55,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:19:55,648 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) [2024-09-17 19:19:55,649 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 19:19:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:55,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-17 19:19:55,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:19:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 31 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-17 19:19:55,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:19:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 33 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-09-17 19:19:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770836204] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:19:56,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:19:56,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 19 [2024-09-17 19:19:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723030421] [2024-09-17 19:19:56,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:19:56,120 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-17 19:19:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:19:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-17 19:19:56,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-09-17 19:19:56,121 INFO L87 Difference]: Start difference. First operand 112 states and 180 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 11 states have call predecessors, (22), 12 states have call successors, (22) [2024-09-17 19:19:56,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:19:56,470 INFO L93 Difference]: Finished difference Result 254 states and 496 transitions. [2024-09-17 19:19:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-17 19:19:56,471 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 11 states have call predecessors, (22), 12 states have call successors, (22) Word has length 82 [2024-09-17 19:19:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:19:56,476 INFO L225 Difference]: With dead ends: 254 [2024-09-17 19:19:56,476 INFO L226 Difference]: Without dead ends: 137 [2024-09-17 19:19:56,477 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-09-17 19:19:56,478 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 19:19:56,479 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 264 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 19:19:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-09-17 19:19:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 114. [2024-09-17 19:19:56,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 75 states have internal predecessors, (91), 25 states have call successors, (25), 13 states have call predecessors, (25), 14 states have return successors, (61), 25 states have call predecessors, (61), 24 states have call successors, (61) [2024-09-17 19:19:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 177 transitions. [2024-09-17 19:19:56,519 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 177 transitions. Word has length 82 [2024-09-17 19:19:56,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:19:56,519 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 177 transitions. [2024-09-17 19:19:56,520 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 11 states have call predecessors, (22), 12 states have call successors, (22) [2024-09-17 19:19:56,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 177 transitions. [2024-09-17 19:19:56,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-17 19:19:56,525 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:19:56,525 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 13, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:19:56,542 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-17 19:19:56,726 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 [2024-09-17 19:19:56,726 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:19:56,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash 146808360, now seen corresponding path program 1 times [2024-09-17 19:19:56,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:19:56,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670973243] [2024-09-17 19:19:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:56,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:19:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:56,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:19:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:56,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:19:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:19:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 19:19:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:19:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-17 19:19:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 19:19:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:19:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:19:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-17 19:19:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 183 proven. 290 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 19:19:57,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:19:57,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670973243] [2024-09-17 19:19:57,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670973243] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:19:57,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027110627] [2024-09-17 19:19:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:57,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:19:57,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:19:57,442 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) [2024-09-17 19:19:57,444 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 19:19:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:57,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-17 19:19:57,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:19:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 92 proven. 230 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2024-09-17 19:19:57,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:19:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 92 proven. 238 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2024-09-17 19:19:58,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027110627] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:19:58,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:19:58,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 13] total 32 [2024-09-17 19:19:58,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986099939] [2024-09-17 19:19:58,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:19:58,783 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-17 19:19:58,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:19:58,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-17 19:19:58,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2024-09-17 19:19:58,784 INFO L87 Difference]: Start difference. First operand 114 states and 177 transitions. Second operand has 32 states, 31 states have (on average 2.903225806451613) internal successors, (90), 32 states have internal predecessors, (90), 20 states have call successors, (28), 1 states have call predecessors, (28), 14 states have return successors, (34), 20 states have call predecessors, (34), 20 states have call successors, (34) [2024-09-17 19:19:59,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:19:59,486 INFO L93 Difference]: Finished difference Result 244 states and 453 transitions. [2024-09-17 19:19:59,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-17 19:19:59,486 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.903225806451613) internal successors, (90), 32 states have internal predecessors, (90), 20 states have call successors, (28), 1 states have call predecessors, (28), 14 states have return successors, (34), 20 states have call predecessors, (34), 20 states have call successors, (34) Word has length 205 [2024-09-17 19:19:59,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:19:59,488 INFO L225 Difference]: With dead ends: 244 [2024-09-17 19:19:59,488 INFO L226 Difference]: Without dead ends: 116 [2024-09-17 19:19:59,491 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 453 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=1987, Unknown=0, NotChecked=0, Total=2352 [2024-09-17 19:19:59,492 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 80 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 19:19:59,492 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 482 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 19:19:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-17 19:19:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2024-09-17 19:19:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 66 states have internal predecessors, (82), 19 states have call successors, (19), 14 states have call predecessors, (19), 12 states have return successors, (35), 17 states have call predecessors, (35), 18 states have call successors, (35) [2024-09-17 19:19:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2024-09-17 19:19:59,509 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 205 [2024-09-17 19:19:59,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:19:59,510 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2024-09-17 19:19:59,510 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.903225806451613) internal successors, (90), 32 states have internal predecessors, (90), 20 states have call successors, (28), 1 states have call predecessors, (28), 14 states have return successors, (34), 20 states have call predecessors, (34), 20 states have call successors, (34) [2024-09-17 19:19:59,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2024-09-17 19:19:59,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-17 19:19:59,512 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:19:59,512 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:19:59,529 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-17 19:19:59,716 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 [2024-09-17 19:19:59,717 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:19:59,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:19:59,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1761300740, now seen corresponding path program 2 times [2024-09-17 19:19:59,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:19:59,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139422353] [2024-09-17 19:19:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:19:59,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:19:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:19:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:19:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:19:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 19:19:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:19:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-17 19:19:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:19:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:19:59,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 79 proven. 22 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-09-17 19:20:00,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:20:00,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139422353] [2024-09-17 19:20:00,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139422353] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:20:00,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802559776] [2024-09-17 19:20:00,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:20:00,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:20:00,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:20:00,006 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) [2024-09-17 19:20:00,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-17 19:20:00,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:20:00,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:20:00,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-17 19:20:00,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:20:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-17 19:20:00,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:20:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-17 19:20:00,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802559776] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:20:00,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:20:00,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 9] total 19 [2024-09-17 19:20:00,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120540658] [2024-09-17 19:20:00,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:20:00,444 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-17 19:20:00,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:20:00,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-17 19:20:00,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-09-17 19:20:00,445 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 11 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) [2024-09-17 19:20:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:20:00,625 INFO L93 Difference]: Finished difference Result 194 states and 277 transitions. [2024-09-17 19:20:00,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-17 19:20:00,625 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 11 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) Word has length 95 [2024-09-17 19:20:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:20:00,627 INFO L225 Difference]: With dead ends: 194 [2024-09-17 19:20:00,627 INFO L226 Difference]: Without dead ends: 109 [2024-09-17 19:20:00,628 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-09-17 19:20:00,629 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:20:00,629 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 229 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:20:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-17 19:20:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2024-09-17 19:20:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 69 states have internal predecessors, (86), 20 states have call successors, (20), 15 states have call predecessors, (20), 12 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2024-09-17 19:20:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 139 transitions. [2024-09-17 19:20:00,651 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 139 transitions. Word has length 95 [2024-09-17 19:20:00,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:20:00,651 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 139 transitions. [2024-09-17 19:20:00,651 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 11 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) [2024-09-17 19:20:00,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:20:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 139 transitions. [2024-09-17 19:20:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-17 19:20:00,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:20:00,653 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:20:00,671 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-17 19:20:00,853 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 [2024-09-17 19:20:00,854 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:20:00,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:20:00,855 INFO L85 PathProgramCache]: Analyzing trace with hash 719095213, now seen corresponding path program 3 times [2024-09-17 19:20:00,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:20:00,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6338690] [2024-09-17 19:20:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:20:00,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:20:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:20:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:20:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:20:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 19:20:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-17 19:20:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:20:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-17 19:20:01,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:20:01,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6338690] [2024-09-17 19:20:01,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6338690] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:20:01,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176865358] [2024-09-17 19:20:01,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 19:20:01,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:20:01,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:20:01,659 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) [2024-09-17 19:20:01,660 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-17 19:20:01,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-17 19:20:01,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:20:01,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-17 19:20:01,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:20:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-17 19:20:01,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:20:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-17 19:20:02,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176865358] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:20:02,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:20:02,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-09-17 19:20:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460119327] [2024-09-17 19:20:02,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:20:02,342 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-17 19:20:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:20:02,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-17 19:20:02,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-09-17 19:20:02,344 INFO L87 Difference]: Start difference. First operand 103 states and 139 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (18), 18 states have call predecessors, (18), 5 states have call successors, (18) [2024-09-17 19:20:02,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:20:02,535 INFO L93 Difference]: Finished difference Result 137 states and 193 transitions. [2024-09-17 19:20:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-17 19:20:02,535 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (18), 18 states have call predecessors, (18), 5 states have call successors, (18) Word has length 109 [2024-09-17 19:20:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:20:02,537 INFO L225 Difference]: With dead ends: 137 [2024-09-17 19:20:02,537 INFO L226 Difference]: Without dead ends: 133 [2024-09-17 19:20:02,538 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-09-17 19:20:02,539 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:20:02,539 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1012 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:20:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-17 19:20:02,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 124. [2024-09-17 19:20:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 82 states have internal predecessors, (99), 23 states have call successors, (23), 15 states have call predecessors, (23), 17 states have return successors, (54), 26 states have call predecessors, (54), 22 states have call successors, (54) [2024-09-17 19:20:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 176 transitions. [2024-09-17 19:20:02,557 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 176 transitions. Word has length 109 [2024-09-17 19:20:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:20:02,557 INFO L474 AbstractCegarLoop]: Abstraction has 124 states and 176 transitions. [2024-09-17 19:20:02,557 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (18), 18 states have call predecessors, (18), 5 states have call successors, (18) [2024-09-17 19:20:02,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:20:02,558 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 176 transitions. [2024-09-17 19:20:02,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-17 19:20:02,559 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:20:02,559 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:20:02,576 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-17 19:20:02,763 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 [2024-09-17 19:20:02,764 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:20:02,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:20:02,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1579294066, now seen corresponding path program 4 times [2024-09-17 19:20:02,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:20:02,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883704550] [2024-09-17 19:20:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:20:02,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:20:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:02,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:20:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:02,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:20:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:02,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:02,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:02,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:20:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 19:20:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-17 19:20:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:20:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 58 proven. 98 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-17 19:20:03,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:20:03,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883704550] [2024-09-17 19:20:03,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883704550] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:20:03,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444162133] [2024-09-17 19:20:03,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 19:20:03,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:20:03,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:20:03,100 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) [2024-09-17 19:20:03,101 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-17 19:20:03,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 19:20:03,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:20:03,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-17 19:20:03,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:20:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 55 proven. 61 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-09-17 19:20:03,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:20:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 57 proven. 63 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-09-17 19:20:03,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444162133] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:20:03,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:20:03,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 24 [2024-09-17 19:20:03,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819911560] [2024-09-17 19:20:03,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:20:03,841 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-17 19:20:03,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:20:03,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-17 19:20:03,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-09-17 19:20:03,842 INFO L87 Difference]: Start difference. First operand 124 states and 176 transitions. Second operand has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 15 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (28), 15 states have call predecessors, (28), 15 states have call successors, (28) [2024-09-17 19:20:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:20:04,144 INFO L93 Difference]: Finished difference Result 240 states and 354 transitions. [2024-09-17 19:20:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-17 19:20:04,145 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 15 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (28), 15 states have call predecessors, (28), 15 states have call successors, (28) Word has length 110 [2024-09-17 19:20:04,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:20:04,147 INFO L225 Difference]: With dead ends: 240 [2024-09-17 19:20:04,147 INFO L226 Difference]: Without dead ends: 129 [2024-09-17 19:20:04,148 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 240 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2024-09-17 19:20:04,149 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:20:04,149 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 308 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:20:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-17 19:20:04,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2024-09-17 19:20:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.205128205128205) internal successors, (94), 77 states have internal predecessors, (94), 22 states have call successors, (22), 15 states have call predecessors, (22), 15 states have return successors, (39), 23 states have call predecessors, (39), 21 states have call successors, (39) [2024-09-17 19:20:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2024-09-17 19:20:04,164 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 110 [2024-09-17 19:20:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:20:04,164 INFO L474 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2024-09-17 19:20:04,164 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 15 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (28), 15 states have call predecessors, (28), 15 states have call successors, (28) [2024-09-17 19:20:04,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:20:04,165 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2024-09-17 19:20:04,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-17 19:20:04,166 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:20:04,166 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] [2024-09-17 19:20:04,184 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-17 19:20:04,366 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 [2024-09-17 19:20:04,367 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:20:04,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:20:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash -273902236, now seen corresponding path program 1 times [2024-09-17 19:20:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:20:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407581780] [2024-09-17 19:20:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:20:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:20:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:20:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:20:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:20:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 19:20:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:20:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-17 19:20:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:20:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-17 19:20:04,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:20:04,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407581780] [2024-09-17 19:20:04,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407581780] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:20:04,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705022372] [2024-09-17 19:20:04,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:20:04,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:20:04,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:20:04,641 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) [2024-09-17 19:20:04,643 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-17 19:20:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:04,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-17 19:20:04,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:20:04,839 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 133 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-09-17 19:20:04,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:20:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 147 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-09-17 19:20:05,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705022372] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:20:05,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:20:05,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 24 [2024-09-17 19:20:05,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443924217] [2024-09-17 19:20:05,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:20:05,949 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-17 19:20:05,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:20:05,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-17 19:20:05,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-09-17 19:20:05,950 INFO L87 Difference]: Start difference. First operand 116 states and 155 transitions. Second operand has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 19 states have call successors, (26), 1 states have call predecessors, (26), 9 states have return successors, (32), 10 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-17 19:20:06,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:20:06,248 INFO L93 Difference]: Finished difference Result 229 states and 318 transitions. [2024-09-17 19:20:06,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-17 19:20:06,249 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 19 states have call successors, (26), 1 states have call predecessors, (26), 9 states have return successors, (32), 10 states have call predecessors, (32), 19 states have call successors, (32) Word has length 123 [2024-09-17 19:20:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:20:06,250 INFO L225 Difference]: With dead ends: 229 [2024-09-17 19:20:06,251 INFO L226 Difference]: Without dead ends: 84 [2024-09-17 19:20:06,252 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 265 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2024-09-17 19:20:06,252 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 24 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:20:06,252 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 485 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:20:06,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-17 19:20:06,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-09-17 19:20:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 57 states have internal predecessors, (69), 15 states have call successors, (15), 14 states have call predecessors, (15), 10 states have return successors, (15), 12 states have call predecessors, (15), 14 states have call successors, (15) [2024-09-17 19:20:06,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2024-09-17 19:20:06,262 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 123 [2024-09-17 19:20:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:20:06,263 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2024-09-17 19:20:06,263 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 19 states have call successors, (26), 1 states have call predecessors, (26), 9 states have return successors, (32), 10 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-17 19:20:06,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:20:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2024-09-17 19:20:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-17 19:20:06,265 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:20:06,265 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:20:06,281 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-17 19:20:06,465 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 [2024-09-17 19:20:06,465 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:20:06,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:20:06,466 INFO L85 PathProgramCache]: Analyzing trace with hash -543433254, now seen corresponding path program 5 times [2024-09-17 19:20:06,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:20:06,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366617800] [2024-09-17 19:20:06,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:20:06,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:20:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:20:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:20:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:20:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 19:20:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-17 19:20:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:20:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-17 19:20:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-17 19:20:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-17 19:20:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:20:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 92 proven. 147 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-09-17 19:20:06,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:20:06,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366617800] [2024-09-17 19:20:06,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366617800] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:20:06,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065226742] [2024-09-17 19:20:06,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-17 19:20:06,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:20:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:20:06,960 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) [2024-09-17 19:20:06,961 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-17 19:20:07,042 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-17 19:20:07,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:20:07,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-17 19:20:07,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:20:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 126 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-09-17 19:20:07,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:20:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 129 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-17 19:20:07,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065226742] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:20:07,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:20:07,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 15] total 32 [2024-09-17 19:20:07,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984055235] [2024-09-17 19:20:07,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:20:07,980 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-17 19:20:07,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:20:07,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-17 19:20:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2024-09-17 19:20:07,981 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 32 states, 31 states have (on average 3.0) internal successors, (93), 32 states have internal predecessors, (93), 21 states have call successors, (32), 1 states have call predecessors, (32), 11 states have return successors, (35), 19 states have call predecessors, (35), 21 states have call successors, (35) [2024-09-17 19:20:08,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:20:08,328 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-09-17 19:20:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-17 19:20:08,328 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.0) internal successors, (93), 32 states have internal predecessors, (93), 21 states have call successors, (32), 1 states have call predecessors, (32), 11 states have return successors, (35), 19 states have call predecessors, (35), 21 states have call successors, (35) Word has length 136 [2024-09-17 19:20:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:20:08,329 INFO L225 Difference]: With dead ends: 89 [2024-09-17 19:20:08,329 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:20:08,330 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 293 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=330, Invalid=1562, Unknown=0, NotChecked=0, Total=1892 [2024-09-17 19:20:08,331 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 47 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:20:08,331 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 313 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:20:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:20:08,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:20:08,332 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) [2024-09-17 19:20:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:20:08,332 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2024-09-17 19:20:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:20:08,332 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:20:08,333 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.0) internal successors, (93), 32 states have internal predecessors, (93), 21 states have call successors, (32), 1 states have call predecessors, (32), 11 states have return successors, (35), 19 states have call predecessors, (35), 21 states have call successors, (35) [2024-09-17 19:20:08,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:20:08,333 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:20:08,333 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:20:08,336 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 19:20:08,352 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-17 19:20:08,540 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 [2024-09-17 19:20:08,543 INFO L408 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:20:08,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 19:20:13,175 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:20:13,199 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-17 19:20:13,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:20:13 BoogieIcfgContainer [2024-09-17 19:20:13,200 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:20:13,201 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-17 19:20:13,201 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-17 19:20:13,201 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-17 19:20:13,201 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:19:48" (3/4) ... [2024-09-17 19:20:13,203 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-17 19:20:13,254 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-17 19:20:13,254 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-17 19:20:13,256 INFO L158 Benchmark]: Toolchain (without parser) took 25149.88ms. Allocated memory was 172.0MB in the beginning and 463.5MB in the end (delta: 291.5MB). Free memory was 115.0MB in the beginning and 361.6MB in the end (delta: -246.6MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2024-09-17 19:20:13,256 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 172.0MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:20:13,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.46ms. Allocated memory is still 172.0MB. Free memory was 115.0MB in the beginning and 103.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-17 19:20:13,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.37ms. Allocated memory is still 172.0MB. Free memory was 103.9MB in the beginning and 102.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:20:13,258 INFO L158 Benchmark]: Boogie Preprocessor took 28.63ms. Allocated memory is still 172.0MB. Free memory was 102.8MB in the beginning and 101.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:20:13,259 INFO L158 Benchmark]: RCFGBuilder took 355.71ms. Allocated memory is still 172.0MB. Free memory was 101.2MB in the beginning and 88.1MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:20:13,259 INFO L158 Benchmark]: TraceAbstraction took 24459.43ms. Allocated memory was 172.0MB in the beginning and 463.5MB in the end (delta: 291.5MB). Free memory was 87.7MB in the beginning and 363.7MB in the end (delta: -276.0MB). Peak memory consumption was 226.7MB. Max. memory is 16.1GB. [2024-09-17 19:20:13,259 INFO L158 Benchmark]: Witness Printer took 53.34ms. Allocated memory is still 463.5MB. Free memory was 363.7MB in the beginning and 361.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:20:13,261 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 172.0MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.46ms. Allocated memory is still 172.0MB. Free memory was 115.0MB in the beginning and 103.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.37ms. Allocated memory is still 172.0MB. Free memory was 103.9MB in the beginning and 102.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.63ms. Allocated memory is still 172.0MB. Free memory was 102.8MB in the beginning and 101.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 355.71ms. Allocated memory is still 172.0MB. Free memory was 101.2MB in the beginning and 88.1MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 24459.43ms. Allocated memory was 172.0MB in the beginning and 463.5MB in the end (delta: 291.5MB). Free memory was 87.7MB in the beginning and 363.7MB in the end (delta: -276.0MB). Peak memory consumption was 226.7MB. Max. memory is 16.1GB. * Witness Printer took 53.34ms. Allocated memory is still 463.5MB. Free memory was 363.7MB in the beginning and 361.6MB 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: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 19.7s, OverallIterations: 14, TraceHistogramMax: 15, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 530 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 457 mSDsluCounter, 4517 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4076 mSDsCounter, 425 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4940 IncrementalHoareTripleChecker+Invalid, 5365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 425 mSolverCounterUnsat, 441 mSDtfsCounter, 4940 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2661 GetRequests, 2299 SyntacticMatches, 48 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=11, InterpolantAutomatonStates: 234, 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, 14 MinimizatonAttempts, 141 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 2119 NumberOfCodeBlocks, 2051 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3127 ConstructedInterpolants, 0 QuantifiedInterpolants, 5927 SizeOfPredicates, 33 NumberOfNonLiveVariables, 2351 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 6168/8469 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: (((((\result == 1) && (\old(n) == 1)) || (\result == 0)) || (2 < \old(n))) && ((((((2 == \result) && (3 == \old(n))) || ((\result == 1) && (\old(n) == 1))) || ((3 == \result) && (\old(n) == 4))) || (4 < \old(n))) || (\old(n) < 1))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: ((((\result == 0) || (1 < \old(n))) || (\old(n) == 1)) && ((\old(n) != 1) || (\result == 1))) RESULT: Ultimate proved your program to be correct! [2024-09-17 19:20:13,289 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