./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 e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:12:34,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:12:34,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 15:12:34,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:12:34,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:12:34,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:12:34,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:12:34,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:12:34,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:12:34,711 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:12:34,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 15:12:34,712 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 15:12:34,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:12:34,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:12:34,713 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:12:34,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:12:34,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:12:34,715 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:12:34,715 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:12:34,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:12:34,716 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:12:34,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:12:34,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:12:34,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:12:34,717 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:12:34,718 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:12:34,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:12:34,719 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:12:34,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:12:34,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:12:34,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:12:34,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:12:34,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:12:34,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 15:12:34,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 15:12:34,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 15:12:34,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 15:12:34,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 15:12:34,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 15:12:34,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 15:12:34,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 15:12:34,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 15:12:34,723 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 15:12:34,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:12:35,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:12:35,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:12:35,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:12:35,016 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:12:35,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-10-15 15:12:36,549 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:12:36,738 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:12:36,739 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-10-15 15:12:36,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7557bd71e/2803f52749b64e43a04f931f388710bf/FLAGfa64f3014 [2024-10-15 15:12:36,757 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7557bd71e/2803f52749b64e43a04f931f388710bf [2024-10-15 15:12:36,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:12:36,761 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 15:12:36,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:12:36,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:12:36,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:12:36,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:12:36" (1/1) ... [2024-10-15 15:12:36,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0ad1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:36, skipping insertion in model container [2024-10-15 15:12:36,769 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:12:36" (1/1) ... [2024-10-15 15:12:36,787 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:12:36,978 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] [2024-10-15 15:12:36,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:12:36,996 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 15:12:37,012 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] [2024-10-15 15:12:37,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:12:37,033 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:12:37,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37 WrapperNode [2024-10-15 15:12:37,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:12:37,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:12:37,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:12:37,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:12:37,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,057 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:12:37,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:12:37,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:12:37,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:12:37,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:12:37,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,091 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]. [2024-10-15 15:12:37,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:12:37,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:12:37,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:12:37,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:12:37,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2024-10-15 15:12:37,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:12:37,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:37,142 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) [2024-10-15 15:12:37,148 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 [2024-10-15 15:12:37,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:12:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:12:37,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:12:37,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 15:12:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-10-15 15:12:37,234 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-10-15 15:12:37,234 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-10-15 15:12:37,235 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-10-15 15:12:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:12:37,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:12:37,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:12:37,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:12:37,316 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:12:37,319 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:12:37,456 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-15 15:12:37,456 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:12:37,481 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:12:37,481 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-15 15:12:37,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:12:37 BoogieIcfgContainer [2024-10-15 15:12:37,481 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:12:37,484 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 15:12:37,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 15:12:37,488 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 15:12:37,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:12:36" (1/3) ... [2024-10-15 15:12:37,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4bc352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:12:37, skipping insertion in model container [2024-10-15 15:12:37,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (2/3) ... [2024-10-15 15:12:37,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4bc352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:12:37, skipping insertion in model container [2024-10-15 15:12:37,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:12:37" (3/3) ... [2024-10-15 15:12:37,493 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2024-10-15 15:12:37,515 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 15:12:37,515 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 15:12:37,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 15:12:37,577 INFO L333 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;@58451b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 15:12:37,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 15:12:37,582 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) [2024-10-15 15:12:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-15 15:12:37,590 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:37,591 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:12:37,591 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:37,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:37,597 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-10-15 15:12:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:37,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491046520] [2024-10-15 15:12:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:37,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:37,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:37,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:12:37,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491046520] [2024-10-15 15:12:37,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491046520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:12:37,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:12:37,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:12:37,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043852591] [2024-10-15 15:12:37,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:12:37,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:12:37,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:12:37,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:12:37,964 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) [2024-10-15 15:12:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:38,083 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-10-15 15:12:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:12:38,085 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 [2024-10-15 15:12:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:38,092 INFO L225 Difference]: With dead ends: 44 [2024-10-15 15:12:38,093 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 15:12:38,095 INFO L431 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 [2024-10-15 15:12:38,098 INFO L432 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 [2024-10-15 15:12:38,100 INFO L433 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] [2024-10-15 15:12:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 15:12:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-10-15 15:12:38,146 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) [2024-10-15 15:12:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-10-15 15:12:38,153 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-10-15 15:12:38,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:38,154 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-10-15 15:12:38,154 INFO L472 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) [2024-10-15 15:12:38,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-10-15 15:12:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-15 15:12:38,159 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:38,159 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:12:38,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 15:12:38,160 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:38,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-10-15 15:12:38,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:38,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629586386] [2024-10-15 15:12:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:38,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:38,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:38,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:12:38,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:38,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629586386] [2024-10-15 15:12:38,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629586386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:12:38,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:12:38,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:12:38,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036316573] [2024-10-15 15:12:38,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:12:38,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:12:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:12:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:12:38,324 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) [2024-10-15 15:12:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:38,409 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-10-15 15:12:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:12:38,410 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 [2024-10-15 15:12:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:38,411 INFO L225 Difference]: With dead ends: 36 [2024-10-15 15:12:38,412 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 15:12:38,413 INFO L431 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 [2024-10-15 15:12:38,414 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:12:38,415 INFO L433 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] [2024-10-15 15:12:38,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 15:12:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-10-15 15:12:38,427 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) [2024-10-15 15:12:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-10-15 15:12:38,430 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-10-15 15:12:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:38,430 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-10-15 15:12:38,431 INFO L472 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) [2024-10-15 15:12:38,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:38,431 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-10-15 15:12:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-15 15:12:38,432 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:38,432 INFO L215 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] [2024-10-15 15:12:38,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 15:12:38,433 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:38,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-10-15 15:12:38,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:38,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615812110] [2024-10-15 15:12:38,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:38,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:38,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:38,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:38,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:38,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 15:12:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:12:38,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:38,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615812110] [2024-10-15 15:12:38,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615812110] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:38,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184416432] [2024-10-15 15:12:38,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:38,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:38,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:38,652 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) [2024-10-15 15:12:38,654 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 15:12:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:38,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 15:12:38,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:12:38,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:12:39,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184416432] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:39,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:39,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-10-15 15:12:39,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22318006] [2024-10-15 15:12:39,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:39,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 15:12:39,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 15:12:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-15 15:12:39,054 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) [2024-10-15 15:12:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:39,207 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-10-15 15:12:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 15:12:39,208 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 [2024-10-15 15:12:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:39,209 INFO L225 Difference]: With dead ends: 58 [2024-10-15 15:12:39,209 INFO L226 Difference]: Without dead ends: 34 [2024-10-15 15:12:39,210 INFO L431 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 [2024-10-15 15:12:39,211 INFO L432 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 [2024-10-15 15:12:39,212 INFO L433 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] [2024-10-15 15:12:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-15 15:12:39,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-10-15 15:12:39,222 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) [2024-10-15 15:12:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-10-15 15:12:39,223 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-10-15 15:12:39,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:39,223 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-10-15 15:12:39,224 INFO L472 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) [2024-10-15 15:12:39,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:39,224 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-10-15 15:12:39,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-15 15:12:39,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:39,225 INFO L215 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] [2024-10-15 15:12:39,244 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 15:12:39,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:39,430 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:39,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:39,431 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-10-15 15:12:39,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:39,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345232944] [2024-10-15 15:12:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:39,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:39,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:39,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:39,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:12:39,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345232944] [2024-10-15 15:12:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345232944] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877353565] [2024-10-15 15:12:39,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:39,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:39,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:39,735 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) [2024-10-15 15:12:39,738 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 15:12:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:39,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 15:12:39,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:12:39,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:12:40,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877353565] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:40,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:40,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-10-15 15:12:40,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90795386] [2024-10-15 15:12:40,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:40,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 15:12:40,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:40,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 15:12:40,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-10-15 15:12:40,049 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) [2024-10-15 15:12:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:40,248 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-10-15 15:12:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 15:12:40,249 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 [2024-10-15 15:12:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:40,252 INFO L225 Difference]: With dead ends: 56 [2024-10-15 15:12:40,252 INFO L226 Difference]: Without dead ends: 52 [2024-10-15 15:12:40,253 INFO L431 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 [2024-10-15 15:12:40,253 INFO L432 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 [2024-10-15 15:12:40,254 INFO L433 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] [2024-10-15 15:12:40,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-10-15 15:12:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-10-15 15:12:40,267 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) [2024-10-15 15:12:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-10-15 15:12:40,270 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-10-15 15:12:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:40,270 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-10-15 15:12:40,270 INFO L472 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) [2024-10-15 15:12:40,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-10-15 15:12:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-15 15:12:40,274 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:40,274 INFO L215 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] [2024-10-15 15:12:40,292 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 15:12:40,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:40,476 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:40,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-10-15 15:12:40,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:40,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241864281] [2024-10-15 15:12:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:40,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:40,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:40,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:40,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:40,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:40,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 15:12:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:40,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 15:12:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:12:40,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:40,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241864281] [2024-10-15 15:12:40,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241864281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:40,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763648407] [2024-10-15 15:12:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:40,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:40,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:40,613 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) [2024-10-15 15:12:40,615 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 15:12:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:40,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 15:12:40,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 15:12:40,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:12:41,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763648407] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:41,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:41,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-10-15 15:12:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645182075] [2024-10-15 15:12:41,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:41,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 15:12:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:41,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 15:12:41,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-10-15 15:12:41,136 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) [2024-10-15 15:12:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:41,409 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-10-15 15:12:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 15:12:41,410 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 [2024-10-15 15:12:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:41,412 INFO L225 Difference]: With dead ends: 112 [2024-10-15 15:12:41,412 INFO L226 Difference]: Without dead ends: 68 [2024-10-15 15:12:41,413 INFO L431 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 [2024-10-15 15:12:41,418 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-10-15 15:12:41,418 INFO L433 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] [2024-10-15 15:12:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-15 15:12:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-10-15 15:12:41,442 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) [2024-10-15 15:12:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-10-15 15:12:41,445 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-10-15 15:12:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:41,446 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-10-15 15:12:41,446 INFO L472 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) [2024-10-15 15:12:41,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-10-15 15:12:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-15 15:12:41,450 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:41,451 INFO L215 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] [2024-10-15 15:12:41,470 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 15:12:41,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:41,652 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:41,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:41,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-10-15 15:12:41,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:41,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306660269] [2024-10-15 15:12:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:41,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:41,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:41,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:41,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:41,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:41,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:41,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-15 15:12:41,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:41,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306660269] [2024-10-15 15:12:41,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306660269] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:41,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194484673] [2024-10-15 15:12:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:41,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:41,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:41,844 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) [2024-10-15 15:12:41,846 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 15:12:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:41,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 15:12:41,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:41,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:12:41,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:12:42,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194484673] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:42,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:42,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-10-15 15:12:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819006350] [2024-10-15 15:12:42,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:42,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-15 15:12:42,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-15 15:12:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-10-15 15:12:42,319 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) [2024-10-15 15:12:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:42,699 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-10-15 15:12:42,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 15:12:42,699 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 [2024-10-15 15:12:42,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:42,702 INFO L225 Difference]: With dead ends: 182 [2024-10-15 15:12:42,703 INFO L226 Difference]: Without dead ends: 122 [2024-10-15 15:12:42,704 INFO L431 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 [2024-10-15 15:12:42,705 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:12:42,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 343 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:12:42,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-15 15:12:42,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-10-15 15:12:42,734 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) [2024-10-15 15:12:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-10-15 15:12:42,736 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-10-15 15:12:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:42,737 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-10-15 15:12:42,737 INFO L472 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) [2024-10-15 15:12:42,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:42,738 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-10-15 15:12:42,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-15 15:12:42,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:42,744 INFO L215 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] [2024-10-15 15:12:42,768 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 15:12:42,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:42,945 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:42,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:42,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-10-15 15:12:42,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:42,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110341075] [2024-10-15 15:12:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:42,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:43,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:43,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:43,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:43,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:43,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:43,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:43,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:43,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 15:12:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-15 15:12:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:43,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110341075] [2024-10-15 15:12:43,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110341075] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:43,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662429119] [2024-10-15 15:12:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:43,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:43,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:43,185 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) [2024-10-15 15:12:43,186 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 15:12:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:43,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 15:12:43,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-15 15:12:43,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 15:12:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662429119] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:43,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:43,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 19 [2024-10-15 15:12:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685802589] [2024-10-15 15:12:43,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:43,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 15:12:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:43,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 15:12:43,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-10-15 15:12:43,886 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) [2024-10-15 15:12:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:44,286 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-10-15 15:12:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 15:12:44,287 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 [2024-10-15 15:12:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:44,290 INFO L225 Difference]: With dead ends: 252 [2024-10-15 15:12:44,290 INFO L226 Difference]: Without dead ends: 155 [2024-10-15 15:12:44,292 INFO L431 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 [2024-10-15 15:12:44,293 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:12:44,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 348 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:12:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-10-15 15:12:44,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-10-15 15:12:44,338 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) [2024-10-15 15:12:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-10-15 15:12:44,341 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-10-15 15:12:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:44,341 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-10-15 15:12:44,342 INFO L472 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) [2024-10-15 15:12:44,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-10-15 15:12:44,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-15 15:12:44,345 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:44,345 INFO L215 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] [2024-10-15 15:12:44,362 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 15:12:44,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 15:12:44,550 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:44,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2073072172, now seen corresponding path program 1 times [2024-10-15 15:12:44,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:44,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890848531] [2024-10-15 15:12:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:44,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:12:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 15:12:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-15 15:12:44,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:44,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890848531] [2024-10-15 15:12:44,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890848531] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:44,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972682993] [2024-10-15 15:12:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:44,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:44,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:44,820 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) [2024-10-15 15:12:44,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 15:12:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:44,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 15:12:44,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 31 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-15 15:12:44,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 33 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-15 15:12:45,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972682993] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:45,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:45,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 19 [2024-10-15 15:12:45,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864145223] [2024-10-15 15:12:45,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:45,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 15:12:45,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 15:12:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-10-15 15:12:45,366 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) [2024-10-15 15:12:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:45,732 INFO L93 Difference]: Finished difference Result 254 states and 496 transitions. [2024-10-15 15:12:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-15 15:12:45,733 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 [2024-10-15 15:12:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:45,737 INFO L225 Difference]: With dead ends: 254 [2024-10-15 15:12:45,738 INFO L226 Difference]: Without dead ends: 137 [2024-10-15 15:12:45,740 INFO L431 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 [2024-10-15 15:12:45,740 INFO L432 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 [2024-10-15 15:12:45,741 INFO L433 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] [2024-10-15 15:12:45,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-10-15 15:12:45,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 114. [2024-10-15 15:12:45,781 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) [2024-10-15 15:12:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 177 transitions. [2024-10-15 15:12:45,786 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 177 transitions. Word has length 82 [2024-10-15 15:12:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:45,787 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 177 transitions. [2024-10-15 15:12:45,787 INFO L472 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) [2024-10-15 15:12:45,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 177 transitions. [2024-10-15 15:12:45,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-10-15 15:12:45,792 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:45,792 INFO L215 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] [2024-10-15 15:12:45,808 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 15:12:45,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:45,993 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:45,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:45,994 INFO L85 PathProgramCache]: Analyzing trace with hash 146808360, now seen corresponding path program 1 times [2024-10-15 15:12:45,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260666932] [2024-10-15 15:12:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:12:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 15:12:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:12:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:12:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 183 proven. 290 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 15:12:46,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:46,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260666932] [2024-10-15 15:12:46,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260666932] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:46,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456738002] [2024-10-15 15:12:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:46,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:46,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:46,841 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) [2024-10-15 15:12:46,842 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 15:12:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:46,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 15:12:46,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 92 proven. 230 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2024-10-15 15:12:47,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 92 proven. 238 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2024-10-15 15:12:48,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456738002] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:48,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:48,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 13] total 32 [2024-10-15 15:12:48,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513287237] [2024-10-15 15:12:48,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:48,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-15 15:12:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:48,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-15 15:12:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2024-10-15 15:12:48,105 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) [2024-10-15 15:12:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:48,813 INFO L93 Difference]: Finished difference Result 244 states and 453 transitions. [2024-10-15 15:12:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-15 15:12:48,814 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 [2024-10-15 15:12:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:48,816 INFO L225 Difference]: With dead ends: 244 [2024-10-15 15:12:48,816 INFO L226 Difference]: Without dead ends: 116 [2024-10-15 15:12:48,819 INFO L431 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 [2024-10-15 15:12:48,819 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 80 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 15:12:48,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 482 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 15:12:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-15 15:12:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2024-10-15 15:12:48,833 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) [2024-10-15 15:12:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2024-10-15 15:12:48,835 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 205 [2024-10-15 15:12:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:48,835 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2024-10-15 15:12:48,835 INFO L472 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) [2024-10-15 15:12:48,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2024-10-15 15:12:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-15 15:12:48,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:48,837 INFO L215 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] [2024-10-15 15:12:48,854 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 15:12:49,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:49,038 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:49,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1761300740, now seen corresponding path program 2 times [2024-10-15 15:12:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:49,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745317998] [2024-10-15 15:12:49,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:49,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:12:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:12:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 79 proven. 22 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-10-15 15:12:49,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:49,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745317998] [2024-10-15 15:12:49,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745317998] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:49,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649898971] [2024-10-15 15:12:49,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:12:49,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:49,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:49,339 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) [2024-10-15 15:12:49,341 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 15:12:49,433 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:12:49,433 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:12:49,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 15:12:49,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-10-15 15:12:49,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-15 15:12:49,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649898971] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:49,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 9] total 19 [2024-10-15 15:12:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214268739] [2024-10-15 15:12:49,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:49,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 15:12:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 15:12:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-10-15 15:12:49,857 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) [2024-10-15 15:12:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:50,065 INFO L93 Difference]: Finished difference Result 194 states and 277 transitions. [2024-10-15 15:12:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 15:12:50,066 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 [2024-10-15 15:12:50,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:50,068 INFO L225 Difference]: With dead ends: 194 [2024-10-15 15:12:50,068 INFO L226 Difference]: Without dead ends: 109 [2024-10-15 15:12:50,069 INFO L431 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 [2024-10-15 15:12:50,071 INFO L432 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, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:12:50,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 229 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:12:50,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-15 15:12:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2024-10-15 15:12:50,088 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) [2024-10-15 15:12:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 139 transitions. [2024-10-15 15:12:50,090 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 139 transitions. Word has length 95 [2024-10-15 15:12:50,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:50,091 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 139 transitions. [2024-10-15 15:12:50,091 INFO L472 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) [2024-10-15 15:12:50,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 139 transitions. [2024-10-15 15:12:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-15 15:12:50,093 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:50,093 INFO L215 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] [2024-10-15 15:12:50,110 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 15:12:50,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:50,297 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:50,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:50,299 INFO L85 PathProgramCache]: Analyzing trace with hash 719095213, now seen corresponding path program 3 times [2024-10-15 15:12:50,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:50,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736448161] [2024-10-15 15:12:50,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:50,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:50,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:50,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:50,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:50,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:50,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:50,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:50,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:12:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:12:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-15 15:12:51,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:51,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736448161] [2024-10-15 15:12:51,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736448161] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:51,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050798848] [2024-10-15 15:12:51,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 15:12:51,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:51,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:51,208 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) [2024-10-15 15:12:51,209 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 15:12:51,287 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-15 15:12:51,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:12:51,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-15 15:12:51,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-15 15:12:51,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-15 15:12:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050798848] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:51,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:51,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-10-15 15:12:51,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078036877] [2024-10-15 15:12:51,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:51,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 15:12:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 15:12:51,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-10-15 15:12:51,935 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) [2024-10-15 15:12:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:52,147 INFO L93 Difference]: Finished difference Result 137 states and 193 transitions. [2024-10-15 15:12:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-15 15:12:52,148 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 [2024-10-15 15:12:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:52,151 INFO L225 Difference]: With dead ends: 137 [2024-10-15 15:12:52,151 INFO L226 Difference]: Without dead ends: 133 [2024-10-15 15:12:52,151 INFO L431 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 [2024-10-15 15:12:52,152 INFO L432 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 [2024-10-15 15:12:52,152 INFO L433 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] [2024-10-15 15:12:52,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-10-15 15:12:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 124. [2024-10-15 15:12:52,171 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) [2024-10-15 15:12:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 176 transitions. [2024-10-15 15:12:52,173 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 176 transitions. Word has length 109 [2024-10-15 15:12:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:52,173 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 176 transitions. [2024-10-15 15:12:52,173 INFO L472 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) [2024-10-15 15:12:52,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:52,174 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 176 transitions. [2024-10-15 15:12:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-15 15:12:52,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:52,176 INFO L215 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] [2024-10-15 15:12:52,193 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-15 15:12:52,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 15:12:52,380 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:52,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1579294066, now seen corresponding path program 4 times [2024-10-15 15:12:52,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:52,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528197240] [2024-10-15 15:12:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:52,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:12:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 15:12:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 58 proven. 98 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 15:12:52,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528197240] [2024-10-15 15:12:52,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528197240] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472281947] [2024-10-15 15:12:52,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 15:12:52,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:52,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:52,737 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) [2024-10-15 15:12:52,738 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 15:12:52,816 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 15:12:52,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:12:52,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 15:12:52,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:52,908 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 55 proven. 61 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-10-15 15:12:52,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 57 proven. 63 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-10-15 15:12:53,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472281947] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:53,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:53,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 24 [2024-10-15 15:12:53,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998605057] [2024-10-15 15:12:53,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:53,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-15 15:12:53,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:53,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-15 15:12:53,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-10-15 15:12:53,585 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) [2024-10-15 15:12:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:53,932 INFO L93 Difference]: Finished difference Result 240 states and 354 transitions. [2024-10-15 15:12:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-15 15:12:53,932 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 [2024-10-15 15:12:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:53,935 INFO L225 Difference]: With dead ends: 240 [2024-10-15 15:12:53,935 INFO L226 Difference]: Without dead ends: 129 [2024-10-15 15:12:53,936 INFO L431 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 [2024-10-15 15:12:53,938 INFO L432 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 [2024-10-15 15:12:53,939 INFO L433 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] [2024-10-15 15:12:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-10-15 15:12:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2024-10-15 15:12:53,957 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) [2024-10-15 15:12:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2024-10-15 15:12:53,959 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 110 [2024-10-15 15:12:53,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:53,960 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2024-10-15 15:12:53,960 INFO L472 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) [2024-10-15 15:12:53,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:53,961 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2024-10-15 15:12:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-15 15:12:53,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:53,963 INFO L215 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] [2024-10-15 15:12:53,980 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-15 15:12:54,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-15 15:12:54,165 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:54,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash -273902236, now seen corresponding path program 1 times [2024-10-15 15:12:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:54,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560769147] [2024-10-15 15:12:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:54,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:12:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 15:12:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 15:12:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-10-15 15:12:54,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:54,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560769147] [2024-10-15 15:12:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560769147] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:54,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510886105] [2024-10-15 15:12:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:54,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:54,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:54,496 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) [2024-10-15 15:12:54,497 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 15:12:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:54,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 15:12:54,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 133 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-10-15 15:12:54,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 147 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-10-15 15:12:55,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510886105] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:55,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:55,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 24 [2024-10-15 15:12:55,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984657417] [2024-10-15 15:12:55,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:55,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-15 15:12:55,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-15 15:12:55,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-10-15 15:12:55,896 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) [2024-10-15 15:12:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:56,188 INFO L93 Difference]: Finished difference Result 229 states and 318 transitions. [2024-10-15 15:12:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 15:12:56,189 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 [2024-10-15 15:12:56,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:56,190 INFO L225 Difference]: With dead ends: 229 [2024-10-15 15:12:56,190 INFO L226 Difference]: Without dead ends: 84 [2024-10-15 15:12:56,192 INFO L431 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 [2024-10-15 15:12:56,195 INFO L432 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 [2024-10-15 15:12:56,195 INFO L433 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] [2024-10-15 15:12:56,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-15 15:12:56,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-10-15 15:12:56,206 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) [2024-10-15 15:12:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2024-10-15 15:12:56,207 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 123 [2024-10-15 15:12:56,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:56,208 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2024-10-15 15:12:56,208 INFO L472 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) [2024-10-15 15:12:56,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2024-10-15 15:12:56,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-10-15 15:12:56,209 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:56,209 INFO L215 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] [2024-10-15 15:12:56,227 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 15:12:56,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:56,410 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:56,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:56,411 INFO L85 PathProgramCache]: Analyzing trace with hash -543433254, now seen corresponding path program 5 times [2024-10-15 15:12:56,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:56,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672878175] [2024-10-15 15:12:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:56,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:12:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:12:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:12:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:12:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:12:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:12:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 92 proven. 147 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-10-15 15:12:56,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:56,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672878175] [2024-10-15 15:12:56,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672878175] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:56,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619066115] [2024-10-15 15:12:56,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 15:12:56,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:56,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:56,948 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) [2024-10-15 15:12:56,950 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 15:12:57,043 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-10-15 15:12:57,044 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:12:57,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 15:12:57,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 126 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-10-15 15:12:57,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 129 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-10-15 15:12:57,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619066115] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:57,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:57,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 15] total 32 [2024-10-15 15:12:57,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958091794] [2024-10-15 15:12:57,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:57,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-15 15:12:57,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-15 15:12:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2024-10-15 15:12:57,980 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) [2024-10-15 15:12:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:58,336 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-10-15 15:12:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-15 15:12:58,337 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 [2024-10-15 15:12:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:58,337 INFO L225 Difference]: With dead ends: 89 [2024-10-15 15:12:58,337 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 15:12:58,338 INFO L431 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 [2024-10-15 15:12:58,339 INFO L432 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 [2024-10-15 15:12:58,339 INFO L433 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] [2024-10-15 15:12:58,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 15:12:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 15:12:58,340 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) [2024-10-15 15:12:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 15:12:58,341 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2024-10-15 15:12:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:58,341 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 15:12:58,341 INFO L472 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) [2024-10-15 15:12:58,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 15:12:58,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 15:12:58,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 15:12:58,362 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-15 15:12:58,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-15 15:12:58,550 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:12:58,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 15:13:03,578 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 15:13:03,621 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-15 15:13:03,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:13:03 BoogieIcfgContainer [2024-10-15 15:13:03,622 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 15:13:03,622 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 15:13:03,623 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 15:13:03,623 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 15:13:03,624 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:12:37" (3/4) ... [2024-10-15 15:13:03,626 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 15:13:03,684 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 15:13:03,685 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 15:13:03,685 INFO L158 Benchmark]: Toolchain (without parser) took 26924.21ms. Allocated memory was 127.9MB in the beginning and 555.7MB in the end (delta: 427.8MB). Free memory was 71.7MB in the beginning and 401.6MB in the end (delta: -329.9MB). Peak memory consumption was 99.8MB. Max. memory is 16.1GB. [2024-10-15 15:13:03,685 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:13:03,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.46ms. Allocated memory is still 127.9MB. Free memory was 71.4MB in the beginning and 59.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 15:13:03,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.77ms. Allocated memory is still 127.9MB. Free memory was 59.2MB in the beginning and 58.3MB in the end (delta: 934.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:13:03,687 INFO L158 Benchmark]: Boogie Preprocessor took 45.37ms. Allocated memory is still 127.9MB. Free memory was 58.3MB in the beginning and 56.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:13:03,687 INFO L158 Benchmark]: RCFGBuilder took 374.44ms. Allocated memory was 127.9MB in the beginning and 174.1MB in the end (delta: 46.1MB). Free memory was 56.7MB in the beginning and 140.0MB in the end (delta: -83.3MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2024-10-15 15:13:03,688 INFO L158 Benchmark]: TraceAbstraction took 26138.20ms. Allocated memory was 174.1MB in the beginning and 555.7MB in the end (delta: 381.7MB). Free memory was 140.0MB in the beginning and 403.7MB in the end (delta: -263.7MB). Peak memory consumption was 261.1MB. Max. memory is 16.1GB. [2024-10-15 15:13:03,688 INFO L158 Benchmark]: Witness Printer took 62.11ms. Allocated memory is still 555.7MB. Free memory was 403.7MB in the beginning and 401.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:13:03,689 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.46ms. Allocated memory is still 127.9MB. Free memory was 71.4MB in the beginning and 59.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.77ms. Allocated memory is still 127.9MB. Free memory was 59.2MB in the beginning and 58.3MB in the end (delta: 934.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.37ms. Allocated memory is still 127.9MB. Free memory was 58.3MB in the beginning and 56.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 374.44ms. Allocated memory was 127.9MB in the beginning and 174.1MB in the end (delta: 46.1MB). Free memory was 56.7MB in the beginning and 140.0MB in the end (delta: -83.3MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * TraceAbstraction took 26138.20ms. Allocated memory was 174.1MB in the beginning and 555.7MB in the end (delta: 381.7MB). Free memory was 140.0MB in the beginning and 403.7MB in the end (delta: -263.7MB). Peak memory consumption was 261.1MB. Max. memory is 16.1GB. * Witness Printer took 62.11ms. Allocated memory is still 555.7MB. Free memory was 403.7MB in the beginning and 401.6MB 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: 21.0s, OverallIterations: 14, TraceHistogramMax: 15, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 530 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 457 mSDsluCounter, 4517 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4076 mSDsCounter, 425 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4942 IncrementalHoareTripleChecker+Invalid, 5367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 425 mSolverCounterUnsat, 441 mSDtfsCounter, 4942 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, 3.3s 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, 12.6s 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) && (n == 1)) || (\result == 0)) || (2 < n)) && ((((((2 == \result) && (3 == n)) || ((\result == 1) && (n == 1))) || ((3 == \result) && (n == 4))) || (4 < n)) || (n < 1))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: ((((\result == 0) || (1 < n)) || (n == 1)) && ((n != 1) || (\result == 1))) RESULT: Ultimate proved your program to be correct! [2024-10-15 15:13:03,723 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