./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_20x0-2.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 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/sum_20x0-2.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 2467b918f90fe26ead39772ec36304202be3f16a6c04dfdd5844d39d05599b5a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:09:32,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:09:32,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:09:32,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:09:32,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:09:32,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:09:32,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:09:32,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:09:32,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:09:32,831 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:09:32,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:09:32,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:09:32,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:09:32,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:09:32,833 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:09:32,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:09:32,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:09:32,834 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:09:32,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:09:32,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:09:32,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:09:32,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:09:32,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:09:32,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:09:32,837 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:09:32,837 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:09:32,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:09:32,838 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:09:32,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:09:32,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:09:32,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:09:32,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:09:32,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:09:32,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:09:32,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:09:32,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:09:32,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:09:32,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:09:32,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:09:32,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:09:32,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:09:32,841 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:09:32,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2467b918f90fe26ead39772ec36304202be3f16a6c04dfdd5844d39d05599b5a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:09:33,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:09:33,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:09:33,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:09:33,108 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:09:33,109 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:09:33,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2024-09-25 00:09:34,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:09:34,510 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:09:34,510 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2024-09-25 00:09:34,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/585eb838b/5cf1f6f0f0214907bc6e8b5b8266728f/FLAG5fe411c66 [2024-09-25 00:09:34,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/585eb838b/5cf1f6f0f0214907bc6e8b5b8266728f [2024-09-25 00:09:34,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:09:34,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:09:34,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:09:34,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:09:34,546 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:09:34,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3beeb65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34, skipping insertion in model container [2024-09-25 00:09:34,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:09:34,686 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c[481,494] [2024-09-25 00:09:34,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:09:34,706 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:09:34,718 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c[481,494] [2024-09-25 00:09:34,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:09:34,734 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:09:34,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34 WrapperNode [2024-09-25 00:09:34,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:09:34,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:09:34,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:09:34,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:09:34,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,753 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:09:34,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:09:34,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:09:34,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:09:34,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:09:34,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,764 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,774 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-25 00:09:34,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:09:34,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:09:34,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:09:34,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:09:34,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (1/1) ... [2024-09-25 00:09:34,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:09:34,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:34,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-25 00:09:34,813 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-25 00:09:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:09:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:09:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:09:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:09:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:09:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-25 00:09:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-25 00:09:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:09:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:09:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:09:34,904 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:09:34,906 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:09:35,000 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-25 00:09:35,000 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:09:35,017 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:09:35,017 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 00:09:35,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:09:35 BoogieIcfgContainer [2024-09-25 00:09:35,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:09:35,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:09:35,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:09:35,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:09:35,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:09:34" (1/3) ... [2024-09-25 00:09:35,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4b242e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:09:35, skipping insertion in model container [2024-09-25 00:09:35,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:34" (2/3) ... [2024-09-25 00:09:35,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4b242e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:09:35, skipping insertion in model container [2024-09-25 00:09:35,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:09:35" (3/3) ... [2024-09-25 00:09:35,042 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2024-09-25 00:09:35,084 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:09:35,087 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:09:35,136 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:09:35,141 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f71caeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:09:35,141 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:09:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 00:09:35,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-25 00:09:35,156 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:35,156 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:35,157 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:35,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash 661201948, now seen corresponding path program 1 times [2024-09-25 00:09:35,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:35,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413743235] [2024-09-25 00:09:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:35,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:35,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:35,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:09:35,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:35,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413743235] [2024-09-25 00:09:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413743235] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:09:35,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:09:35,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:09:35,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385651148] [2024-09-25 00:09:35,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:09:35,412 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:09:35,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:35,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:09:35,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:09:35,436 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 00:09:35,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:35,500 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-25 00:09:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:09:35,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-25 00:09:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:35,510 INFO L225 Difference]: With dead ends: 30 [2024-09-25 00:09:35,510 INFO L226 Difference]: Without dead ends: 18 [2024-09-25 00:09:35,513 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:09:35,515 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:35,516 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 48 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:09:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-25 00:09:35,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-25 00:09:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-25 00:09:35,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-25 00:09:35,546 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2024-09-25 00:09:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:35,546 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-25 00:09:35,547 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 00:09:35,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-25 00:09:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-25 00:09:35,549 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:35,549 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:35,549 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:09:35,549 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:35,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash 36081636, now seen corresponding path program 1 times [2024-09-25 00:09:35,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:35,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564776536] [2024-09-25 00:09:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:35,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:35,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:35,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:35,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 00:09:35,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:35,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564776536] [2024-09-25 00:09:35,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564776536] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:35,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628716503] [2024-09-25 00:09:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:35,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:35,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:35,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:35,754 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:09:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:35,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 00:09:35,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 00:09:35,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:09:36,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628716503] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:36,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:36,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-09-25 00:09:36,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160340181] [2024-09-25 00:09:36,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:36,057 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 00:09:36,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:36,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 00:09:36,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-25 00:09:36,059 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:09:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:36,122 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-09-25 00:09:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 00:09:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 19 [2024-09-25 00:09:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:36,124 INFO L225 Difference]: With dead ends: 25 [2024-09-25 00:09:36,125 INFO L226 Difference]: Without dead ends: 21 [2024-09-25 00:09:36,126 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:09:36,127 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:36,128 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:09:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-25 00:09:36,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-25 00:09:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-25 00:09:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-25 00:09:36,136 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-09-25 00:09:36,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:36,136 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-25 00:09:36,136 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:09:36,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-25 00:09:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-25 00:09:36,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:36,141 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:36,154 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-25 00:09:36,341 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:36,342 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:36,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1588422884, now seen corresponding path program 2 times [2024-09-25 00:09:36,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:36,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152059207] [2024-09-25 00:09:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:36,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:36,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:36,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:36,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:36,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 00:09:36,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:36,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152059207] [2024-09-25 00:09:36,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152059207] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:36,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772052614] [2024-09-25 00:09:36,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:09:36,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:36,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:36,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:36,543 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:09:36,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:09:36,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:36,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-25 00:09:36,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 00:09:36,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-25 00:09:36,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772052614] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:36,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:36,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-09-25 00:09:36,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779524487] [2024-09-25 00:09:36,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:36,921 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-25 00:09:36,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:36,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-25 00:09:36,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-25 00:09:36,922 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 00:09:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:36,986 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-25 00:09:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 00:09:36,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 25 [2024-09-25 00:09:36,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:36,988 INFO L225 Difference]: With dead ends: 28 [2024-09-25 00:09:36,988 INFO L226 Difference]: Without dead ends: 24 [2024-09-25 00:09:36,988 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-25 00:09:36,989 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:36,989 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:09:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-25 00:09:36,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-25 00:09:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-25 00:09:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-25 00:09:36,999 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2024-09-25 00:09:36,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:37,000 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-25 00:09:37,000 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 00:09:37,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:37,000 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-25 00:09:37,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-25 00:09:37,001 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:37,001 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:37,015 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 00:09:37,201 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:37,202 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:37,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1668608796, now seen corresponding path program 3 times [2024-09-25 00:09:37,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:37,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126736516] [2024-09-25 00:09:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:37,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:09:37,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:37,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126736516] [2024-09-25 00:09:37,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126736516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:37,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334413046] [2024-09-25 00:09:37,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:09:37,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:37,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:37,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:37,411 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:09:37,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-25 00:09:37,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:37,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:09:37,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:09:37,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:09:37,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334413046] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:37,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:37,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-09-25 00:09:37,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398239314] [2024-09-25 00:09:37,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:37,941 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-25 00:09:37,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:37,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-25 00:09:37,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-25 00:09:37,942 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-25 00:09:37,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:37,999 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-25 00:09:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 00:09:37,999 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) Word has length 31 [2024-09-25 00:09:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:38,000 INFO L225 Difference]: With dead ends: 31 [2024-09-25 00:09:38,000 INFO L226 Difference]: Without dead ends: 27 [2024-09-25 00:09:38,000 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-09-25 00:09:38,001 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:38,001 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:09:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-25 00:09:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-25 00:09:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-25 00:09:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-25 00:09:38,006 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2024-09-25 00:09:38,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:38,006 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-25 00:09:38,006 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-25 00:09:38,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-25 00:09:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-25 00:09:38,008 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:38,008 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:38,021 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 00:09:38,211 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:38,212 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:38,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2054436324, now seen corresponding path program 4 times [2024-09-25 00:09:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:38,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217180122] [2024-09-25 00:09:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:38,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-25 00:09:38,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217180122] [2024-09-25 00:09:38,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217180122] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149441616] [2024-09-25 00:09:38,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:09:38,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:38,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:38,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:38,448 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:09:38,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:09:38,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:38,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 00:09:38,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-25 00:09:38,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 00:09:39,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149441616] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:39,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:39,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-09-25 00:09:39,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052133581] [2024-09-25 00:09:39,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:39,101 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 00:09:39,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:39,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 00:09:39,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-09-25 00:09:39,102 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-25 00:09:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:39,174 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-09-25 00:09:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 00:09:39,174 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 37 [2024-09-25 00:09:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:39,175 INFO L225 Difference]: With dead ends: 34 [2024-09-25 00:09:39,176 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 00:09:39,177 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-25 00:09:39,177 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:39,178 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:09:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 00:09:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-25 00:09:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-25 00:09:39,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-09-25 00:09:39,187 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2024-09-25 00:09:39,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:39,187 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-09-25 00:09:39,187 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-25 00:09:39,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-09-25 00:09:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-25 00:09:39,190 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:39,190 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:39,203 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 00:09:39,394 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:39,395 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:39,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:39,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2043660772, now seen corresponding path program 5 times [2024-09-25 00:09:39,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:39,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214602038] [2024-09-25 00:09:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:39,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 00:09:39,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214602038] [2024-09-25 00:09:39,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214602038] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149254369] [2024-09-25 00:09:39,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:09:39,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:39,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:39,685 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:39,686 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 00:09:39,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-25 00:09:39,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:39,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 00:09:39,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 00:09:39,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:09:40,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149254369] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:40,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:40,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-09-25 00:09:40,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971431899] [2024-09-25 00:09:40,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:40,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 00:09:40,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:40,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 00:09:40,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-09-25 00:09:40,678 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-25 00:09:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:40,759 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-09-25 00:09:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 00:09:40,759 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 43 [2024-09-25 00:09:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:40,761 INFO L225 Difference]: With dead ends: 37 [2024-09-25 00:09:40,761 INFO L226 Difference]: Without dead ends: 33 [2024-09-25 00:09:40,761 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-09-25 00:09:40,762 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:40,762 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:09:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-25 00:09:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-25 00:09:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-25 00:09:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-09-25 00:09:40,771 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2024-09-25 00:09:40,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:40,772 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-09-25 00:09:40,772 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-25 00:09:40,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:40,773 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-09-25 00:09:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-25 00:09:40,774 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:40,774 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:40,787 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-25 00:09:40,974 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-25 00:09:40,975 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:40,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash 776256796, now seen corresponding path program 6 times [2024-09-25 00:09:40,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:40,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530844667] [2024-09-25 00:09:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-25 00:09:41,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:41,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530844667] [2024-09-25 00:09:41,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530844667] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:41,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536164569] [2024-09-25 00:09:41,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:09:41,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:41,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:41,271 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:41,272 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 00:09:41,332 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-25 00:09:41,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:41,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-25 00:09:41,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-25 00:09:41,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-25 00:09:42,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536164569] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:42,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:42,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-09-25 00:09:42,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465057907] [2024-09-25 00:09:42,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:42,535 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 00:09:42,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:42,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 00:09:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-09-25 00:09:42,536 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-25 00:09:42,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:42,610 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-09-25 00:09:42,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 00:09:42,611 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 49 [2024-09-25 00:09:42,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:42,611 INFO L225 Difference]: With dead ends: 40 [2024-09-25 00:09:42,612 INFO L226 Difference]: Without dead ends: 36 [2024-09-25 00:09:42,612 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2024-09-25 00:09:42,612 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:42,613 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 97 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:09:42,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-25 00:09:42,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-25 00:09:42,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-25 00:09:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-25 00:09:42,617 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2024-09-25 00:09:42,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:42,618 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-25 00:09:42,618 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-25 00:09:42,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-25 00:09:42,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-25 00:09:42,619 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:42,619 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:42,632 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 00:09:42,820 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:42,820 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:42,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830684, now seen corresponding path program 7 times [2024-09-25 00:09:42,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:42,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977575407] [2024-09-25 00:09:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:42,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:42,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:42,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:42,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-25 00:09:43,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:43,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977575407] [2024-09-25 00:09:43,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977575407] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:43,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251231275] [2024-09-25 00:09:43,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:09:43,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:43,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:43,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:43,112 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 00:09:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 00:09:43,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-25 00:09:43,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 00:09:44,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251231275] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:44,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:44,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-09-25 00:09:44,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12043944] [2024-09-25 00:09:44,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:44,735 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 00:09:44,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 00:09:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-09-25 00:09:44,736 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-25 00:09:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:44,822 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-25 00:09:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 00:09:44,823 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 55 [2024-09-25 00:09:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:44,823 INFO L225 Difference]: With dead ends: 43 [2024-09-25 00:09:44,823 INFO L226 Difference]: Without dead ends: 39 [2024-09-25 00:09:44,824 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2024-09-25 00:09:44,824 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:44,825 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 104 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:09:44,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-25 00:09:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-25 00:09:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-25 00:09:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-25 00:09:44,829 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2024-09-25 00:09:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:44,830 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-25 00:09:44,830 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-25 00:09:44,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-25 00:09:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-25 00:09:44,833 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:44,833 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:44,850 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 00:09:45,033 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:45,034 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:45,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:45,034 INFO L85 PathProgramCache]: Analyzing trace with hash 296579100, now seen corresponding path program 8 times [2024-09-25 00:09:45,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:45,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477014279] [2024-09-25 00:09:45,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:45,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-25 00:09:45,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:45,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477014279] [2024-09-25 00:09:45,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477014279] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:45,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018141611] [2024-09-25 00:09:45,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:09:45,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:45,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:45,398 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:45,399 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 00:09:45,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:09:45,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:45,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-25 00:09:45,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-25 00:09:45,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-25 00:09:47,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018141611] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:47,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:47,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-09-25 00:09:47,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130403301] [2024-09-25 00:09:47,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:47,600 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-25 00:09:47,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-25 00:09:47,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-09-25 00:09:47,601 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-25 00:09:47,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:47,723 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-09-25 00:09:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 00:09:47,723 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 61 [2024-09-25 00:09:47,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:47,724 INFO L225 Difference]: With dead ends: 46 [2024-09-25 00:09:47,724 INFO L226 Difference]: Without dead ends: 42 [2024-09-25 00:09:47,725 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-09-25 00:09:47,725 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 119 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:47,725 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 109 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:09:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-25 00:09:47,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-25 00:09:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-25 00:09:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-09-25 00:09:47,736 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2024-09-25 00:09:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:47,738 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-09-25 00:09:47,738 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-25 00:09:47,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-09-25 00:09:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-25 00:09:47,739 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:47,739 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:47,760 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-25 00:09:47,939 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:47,940 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:47,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1875246108, now seen corresponding path program 9 times [2024-09-25 00:09:47,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:47,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140366541] [2024-09-25 00:09:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:47,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-25 00:09:48,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:48,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140366541] [2024-09-25 00:09:48,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140366541] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:48,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819418721] [2024-09-25 00:09:48,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:09:48,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:48,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:48,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:48,351 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 00:09:48,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-25 00:09:48,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:48,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-25 00:09:48,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-25 00:09:48,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 00:09:51,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819418721] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:51,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:51,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 26 [2024-09-25 00:09:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29761002] [2024-09-25 00:09:51,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:51,187 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-25 00:09:51,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-25 00:09:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-09-25 00:09:51,188 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-25 00:09:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:51,326 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-09-25 00:09:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 00:09:51,326 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) Word has length 67 [2024-09-25 00:09:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:51,327 INFO L225 Difference]: With dead ends: 49 [2024-09-25 00:09:51,327 INFO L226 Difference]: Without dead ends: 45 [2024-09-25 00:09:51,328 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=812, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 00:09:51,329 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:51,329 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 130 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:09:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-25 00:09:51,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-25 00:09:51,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-09-25 00:09:51,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-09-25 00:09:51,333 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2024-09-25 00:09:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:51,333 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-09-25 00:09:51,333 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-25 00:09:51,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:51,334 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-09-25 00:09:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-25 00:09:51,334 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:51,335 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:51,349 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 00:09:51,538 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-25 00:09:51,538 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:51,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:51,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1040850148, now seen corresponding path program 10 times [2024-09-25 00:09:51,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:51,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428457134] [2024-09-25 00:09:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:51,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-25 00:09:52,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:52,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428457134] [2024-09-25 00:09:52,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428457134] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:52,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620889651] [2024-09-25 00:09:52,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:09:52,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:52,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:52,017 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:52,019 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 00:09:52,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:09:52,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:52,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-25 00:09:52,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-25 00:09:52,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-25 00:09:55,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620889651] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:55,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:55,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 28 [2024-09-25 00:09:55,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077267624] [2024-09-25 00:09:55,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:55,729 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-25 00:09:55,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:55,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-25 00:09:55,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-09-25 00:09:55,731 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-25 00:09:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:55,861 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-09-25 00:09:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 00:09:55,862 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) Word has length 73 [2024-09-25 00:09:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:55,863 INFO L225 Difference]: With dead ends: 52 [2024-09-25 00:09:55,863 INFO L226 Difference]: Without dead ends: 48 [2024-09-25 00:09:55,863 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 146 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 00:09:55,864 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 118 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:55,864 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 116 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:09:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-25 00:09:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-25 00:09:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-25 00:09:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-25 00:09:55,869 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2024-09-25 00:09:55,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:55,869 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-25 00:09:55,869 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-25 00:09:55,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-25 00:09:55,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-25 00:09:55,870 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:55,871 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:55,887 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 00:09:56,071 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-25 00:09:56,072 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:56,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:56,072 INFO L85 PathProgramCache]: Analyzing trace with hash 218071268, now seen corresponding path program 11 times [2024-09-25 00:09:56,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:56,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273086275] [2024-09-25 00:09:56,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:56,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-25 00:09:56,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:56,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273086275] [2024-09-25 00:09:56,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273086275] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:56,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797993828] [2024-09-25 00:09:56,568 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:09:56,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:56,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:56,570 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:09:56,570 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 00:09:56,785 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-25 00:09:56,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:56,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-25 00:09:56,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-25 00:09:56,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:10:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-25 00:10:01,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797993828] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:10:01,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:10:01,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 30 [2024-09-25 00:10:01,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713633615] [2024-09-25 00:10:01,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:10:01,368 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-25 00:10:01,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:01,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-25 00:10:01,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2024-09-25 00:10:01,372 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-25 00:10:01,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:01,505 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-09-25 00:10:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 00:10:01,509 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 79 [2024-09-25 00:10:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:01,510 INFO L225 Difference]: With dead ends: 55 [2024-09-25 00:10:01,510 INFO L226 Difference]: Without dead ends: 51 [2024-09-25 00:10:01,511 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 158 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2024-09-25 00:10:01,512 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:01,512 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 133 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-25 00:10:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-25 00:10:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-09-25 00:10:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-09-25 00:10:01,517 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2024-09-25 00:10:01,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:01,518 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-09-25 00:10:01,518 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-25 00:10:01,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-09-25 00:10:01,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-25 00:10:01,519 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:01,519 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:01,533 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-25 00:10:01,722 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:01,722 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:01,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:01,722 INFO L85 PathProgramCache]: Analyzing trace with hash -313649636, now seen corresponding path program 12 times [2024-09-25 00:10:01,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:01,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703073288] [2024-09-25 00:10:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:01,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:01,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:01,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-25 00:10:02,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:02,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703073288] [2024-09-25 00:10:02,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703073288] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:02,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793177383] [2024-09-25 00:10:02,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:10:02,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:02,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:02,519 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:02,520 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 00:10:02,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-25 00:10:02,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:10:02,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-25 00:10:02,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-25 00:10:02,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:10:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-25 00:10:08,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793177383] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:10:08,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:10:08,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 32 [2024-09-25 00:10:08,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597896488] [2024-09-25 00:10:08,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:10:08,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-25 00:10:08,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:08,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-25 00:10:08,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-09-25 00:10:08,678 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-25 00:10:08,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:08,832 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-09-25 00:10:08,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 00:10:08,832 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) Word has length 85 [2024-09-25 00:10:08,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:08,833 INFO L225 Difference]: With dead ends: 58 [2024-09-25 00:10:08,833 INFO L226 Difference]: Without dead ends: 54 [2024-09-25 00:10:08,834 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 170 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=606, Invalid=1286, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 00:10:08,834 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 155 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:08,834 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 147 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:08,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-25 00:10:08,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-09-25 00:10:08,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-25 00:10:08,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-09-25 00:10:08,841 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2024-09-25 00:10:08,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:08,841 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-09-25 00:10:08,841 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-25 00:10:08,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-09-25 00:10:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-25 00:10:08,842 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:08,842 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:08,857 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-25 00:10:09,046 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-25 00:10:09,047 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:09,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1407532516, now seen corresponding path program 13 times [2024-09-25 00:10:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:09,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489899146] [2024-09-25 00:10:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:09,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-25 00:10:09,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:09,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489899146] [2024-09-25 00:10:09,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489899146] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:09,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267005234] [2024-09-25 00:10:09,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:10:09,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:09,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:09,743 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:09,743 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 00:10:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:10,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-25 00:10:10,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-25 00:10:10,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:10:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-25 00:10:17,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267005234] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:10:17,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:10:17,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 34 [2024-09-25 00:10:17,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389322046] [2024-09-25 00:10:17,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:10:17,484 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-25 00:10:17,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:17,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-25 00:10:17,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 00:10:17,485 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-25 00:10:17,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:17,644 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-09-25 00:10:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-25 00:10:17,645 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) Word has length 91 [2024-09-25 00:10:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:17,646 INFO L225 Difference]: With dead ends: 61 [2024-09-25 00:10:17,646 INFO L226 Difference]: Without dead ends: 57 [2024-09-25 00:10:17,647 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 182 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=694, Invalid=1468, Unknown=0, NotChecked=0, Total=2162 [2024-09-25 00:10:17,649 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:17,649 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 147 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:17,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-25 00:10:17,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-25 00:10:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2024-09-25 00:10:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-09-25 00:10:17,658 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2024-09-25 00:10:17,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:17,658 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-09-25 00:10:17,659 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-25 00:10:17,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:17,659 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-09-25 00:10:17,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-25 00:10:17,660 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:17,660 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:17,676 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-25 00:10:17,860 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-25 00:10:17,861 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:17,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1575356700, now seen corresponding path program 14 times [2024-09-25 00:10:17,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:17,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187772638] [2024-09-25 00:10:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:17,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:17,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:17,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-25 00:10:18,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:18,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187772638] [2024-09-25 00:10:18,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187772638] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:18,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238401639] [2024-09-25 00:10:18,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:10:18,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:18,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:18,634 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:18,635 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-25 00:10:19,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:10:19,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:10:19,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-25 00:10:19,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-25 00:10:19,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:10:28,016 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-25 00:10:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238401639] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:10:28,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:10:28,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 33] total 36 [2024-09-25 00:10:28,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662269414] [2024-09-25 00:10:28,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:10:28,018 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-25 00:10:28,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:28,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-25 00:10:28,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 00:10:28,019 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 19 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45) [2024-09-25 00:10:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:28,202 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-09-25 00:10:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 00:10:28,202 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 19 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45) Word has length 97 [2024-09-25 00:10:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:28,203 INFO L225 Difference]: With dead ends: 64 [2024-09-25 00:10:28,203 INFO L226 Difference]: Without dead ends: 60 [2024-09-25 00:10:28,204 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 15 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=788, Invalid=1662, Unknown=0, NotChecked=0, Total=2450 [2024-09-25 00:10:28,204 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 170 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:28,205 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 148 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-25 00:10:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-25 00:10:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2024-09-25 00:10:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-09-25 00:10:28,212 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2024-09-25 00:10:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:28,213 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-09-25 00:10:28,213 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.088235294117647) internal successors, (71), 36 states have internal predecessors, (71), 19 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45) [2024-09-25 00:10:28,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-09-25 00:10:28,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-25 00:10:28,214 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:28,214 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:28,230 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-25 00:10:28,415 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-25 00:10:28,415 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:28,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash 12270308, now seen corresponding path program 15 times [2024-09-25 00:10:28,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:28,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984081887] [2024-09-25 00:10:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:28,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:28,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:28,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:28,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:28,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:28,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:28,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:28,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:29,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:29,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:29,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:29,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:29,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:29,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:29,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:29,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:29,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-09-25 00:10:29,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:29,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984081887] [2024-09-25 00:10:29,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984081887] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:29,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693288468] [2024-09-25 00:10:29,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:10:29,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:29,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:29,249 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:29,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-25 00:10:29,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-25 00:10:29,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:10:29,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-25 00:10:29,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-09-25 00:10:29,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:10:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-25 00:10:40,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693288468] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:10:40,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:10:40,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 35] total 38 [2024-09-25 00:10:40,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732618182] [2024-09-25 00:10:40,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:10:40,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-25 00:10:40,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:40,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-25 00:10:40,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1043, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 00:10:40,963 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 20 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (48), 17 states have call predecessors, (48), 20 states have call successors, (48) [2024-09-25 00:10:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:41,169 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2024-09-25 00:10:41,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-25 00:10:41,170 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 20 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (48), 17 states have call predecessors, (48), 20 states have call successors, (48) Word has length 103 [2024-09-25 00:10:41,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:41,171 INFO L225 Difference]: With dead ends: 67 [2024-09-25 00:10:41,171 INFO L226 Difference]: Without dead ends: 63 [2024-09-25 00:10:41,172 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 206 SyntacticMatches, 16 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=888, Invalid=1868, Unknown=0, NotChecked=0, Total=2756 [2024-09-25 00:10:41,172 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 164 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:41,172 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 150 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-25 00:10:41,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-25 00:10:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 4 states have call successors, (4), 3 states have call predecessors, (4), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2024-09-25 00:10:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-25 00:10:41,183 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 103 [2024-09-25 00:10:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:41,183 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-25 00:10:41,183 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 38 states have internal predecessors, (75), 20 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (48), 17 states have call predecessors, (48), 20 states have call successors, (48) [2024-09-25 00:10:41,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-25 00:10:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-25 00:10:41,184 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:41,184 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:41,201 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-25 00:10:41,385 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-25 00:10:41,385 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:41,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash -101860324, now seen corresponding path program 16 times [2024-09-25 00:10:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:41,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731036873] [2024-09-25 00:10:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:41,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:41,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:41,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:41,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:41,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:41,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:41,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:41,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-09-25 00:10:42,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:42,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731036873] [2024-09-25 00:10:42,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731036873] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:42,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429112963] [2024-09-25 00:10:42,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:10:42,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:42,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:42,338 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:42,339 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-25 00:10:42,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:10:42,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:10:42,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-25 00:10:42,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-09-25 00:10:43,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:10:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-25 00:10:56,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429112963] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:10:56,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:10:56,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 37] total 40 [2024-09-25 00:10:56,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658733091] [2024-09-25 00:10:56,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:10:56,456 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-25 00:10:56,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:56,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-25 00:10:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1158, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 00:10:56,458 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 40 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 40 states have internal predecessors, (79), 21 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (51), 18 states have call predecessors, (51), 21 states have call successors, (51) [2024-09-25 00:10:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:56,651 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2024-09-25 00:10:56,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-25 00:10:56,652 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 40 states have internal predecessors, (79), 21 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (51), 18 states have call predecessors, (51), 21 states have call successors, (51) Word has length 109 [2024-09-25 00:10:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:56,654 INFO L225 Difference]: With dead ends: 70 [2024-09-25 00:10:56,654 INFO L226 Difference]: Without dead ends: 66 [2024-09-25 00:10:56,655 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 218 SyntacticMatches, 17 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=994, Invalid=2086, Unknown=0, NotChecked=0, Total=3080 [2024-09-25 00:10:56,655 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:56,655 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 185 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-25 00:10:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-25 00:10:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2024-09-25 00:10:56,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2024-09-25 00:10:56,663 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 109 [2024-09-25 00:10:56,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:56,665 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2024-09-25 00:10:56,665 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 40 states have internal predecessors, (79), 21 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (51), 18 states have call predecessors, (51), 21 states have call successors, (51) [2024-09-25 00:10:56,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2024-09-25 00:10:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-09-25 00:10:56,666 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:56,666 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:56,683 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-25 00:10:56,866 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:56,867 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:56,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash 324106212, now seen corresponding path program 17 times [2024-09-25 00:10:56,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:56,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573797006] [2024-09-25 00:10:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-09-25 00:10:57,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:57,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573797006] [2024-09-25 00:10:57,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573797006] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:57,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423395607] [2024-09-25 00:10:57,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:10:57,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:57,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:57,955 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:57,957 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-25 00:10:58,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-09-25 00:10:58,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:10:58,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-25 00:10:58,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-09-25 00:10:58,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:11:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-25 00:11:15,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423395607] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:11:15,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:11:15,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 39] total 42 [2024-09-25 00:11:15,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877039257] [2024-09-25 00:11:15,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:11:15,073 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-25 00:11:15,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:11:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-25 00:11:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=1279, Unknown=0, NotChecked=0, Total=1722 [2024-09-25 00:11:15,074 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 42 states, 40 states have (on average 2.075) internal successors, (83), 42 states have internal predecessors, (83), 22 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (54), 19 states have call predecessors, (54), 22 states have call successors, (54) [2024-09-25 00:11:15,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:11:15,332 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2024-09-25 00:11:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 00:11:15,332 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.075) internal successors, (83), 42 states have internal predecessors, (83), 22 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (54), 19 states have call predecessors, (54), 22 states have call successors, (54) Word has length 115 [2024-09-25 00:11:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:11:15,334 INFO L225 Difference]: With dead ends: 73 [2024-09-25 00:11:15,334 INFO L226 Difference]: Without dead ends: 69 [2024-09-25 00:11:15,335 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 230 SyntacticMatches, 18 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1106, Invalid=2316, Unknown=0, NotChecked=0, Total=3422 [2024-09-25 00:11:15,336 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 333 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:11:15,336 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 181 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:11:15,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-25 00:11:15,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-09-25 00:11:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2024-09-25 00:11:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2024-09-25 00:11:15,344 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 115 [2024-09-25 00:11:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:11:15,345 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2024-09-25 00:11:15,345 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.075) internal successors, (83), 42 states have internal predecessors, (83), 22 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (54), 19 states have call predecessors, (54), 22 states have call successors, (54) [2024-09-25 00:11:15,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:11:15,346 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2024-09-25 00:11:15,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-25 00:11:15,346 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:11:15,346 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:11:15,365 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-25 00:11:15,547 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-25 00:11:15,547 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:11:15,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:11:15,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1013633252, now seen corresponding path program 18 times [2024-09-25 00:11:15,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:11:15,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713496400] [2024-09-25 00:11:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:11:15,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:11:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:15,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:11:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:15,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:11:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:15,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:15,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-09-25 00:11:16,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:11:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713496400] [2024-09-25 00:11:16,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713496400] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:11:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431531471] [2024-09-25 00:11:16,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:11:16,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:11:16,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:11:16,788 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:11:16,789 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-25 00:11:17,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-25 00:11:17,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:11:17,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-25 00:11:17,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:11:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-09-25 00:11:17,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:11:37,231 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 819 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-09-25 00:11:37,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431531471] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:11:37,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:11:37,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 41] total 44 [2024-09-25 00:11:37,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895832515] [2024-09-25 00:11:37,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:11:37,232 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-25 00:11:37,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:11:37,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-25 00:11:37,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=1406, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 00:11:37,233 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 44 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 44 states have internal predecessors, (87), 23 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (57), 20 states have call predecessors, (57), 23 states have call successors, (57) [2024-09-25 00:11:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:11:37,446 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2024-09-25 00:11:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-25 00:11:37,447 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 44 states have internal predecessors, (87), 23 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (57), 20 states have call predecessors, (57), 23 states have call successors, (57) Word has length 121 [2024-09-25 00:11:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:11:37,447 INFO L225 Difference]: With dead ends: 76 [2024-09-25 00:11:37,447 INFO L226 Difference]: Without dead ends: 72 [2024-09-25 00:11:37,448 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 242 SyntacticMatches, 19 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1224, Invalid=2558, Unknown=0, NotChecked=0, Total=3782 [2024-09-25 00:11:37,449 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:11:37,449 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 193 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:11:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-25 00:11:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-25 00:11:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 21 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2024-09-25 00:11:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-25 00:11:37,453 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 121 [2024-09-25 00:11:37,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:11:37,453 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-25 00:11:37,454 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 44 states have internal predecessors, (87), 23 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (57), 20 states have call predecessors, (57), 23 states have call successors, (57) [2024-09-25 00:11:37,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:11:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-25 00:11:37,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-09-25 00:11:37,455 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:11:37,455 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:11:37,474 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-25 00:11:37,655 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:11:37,656 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:11:37,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:11:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash -277351196, now seen corresponding path program 19 times [2024-09-25 00:11:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:11:37,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875502804] [2024-09-25 00:11:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:11:37,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:11:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:37,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:11:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:37,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:11:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:37,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:11:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-09-25 00:11:38,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:11:38,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875502804] [2024-09-25 00:11:38,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875502804] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:11:38,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824068369] [2024-09-25 00:11:38,928 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:11:38,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:11:38,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:11:38,929 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:11:38,930 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-25 00:11:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:11:40,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-25 00:11:40,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:11:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-09-25 00:11:40,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:12:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-25 00:12:03,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824068369] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:12:03,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:12:03,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 43] total 45 [2024-09-25 00:12:03,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129221091] [2024-09-25 00:12:03,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:12:03,350 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-25 00:12:03,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:12:03,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-25 00:12:03,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2024-09-25 00:12:03,351 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 45 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 45 states have internal predecessors, (90), 23 states have call successors, (24), 1 states have call predecessors, (24), 21 states have return successors, (59), 21 states have call predecessors, (59), 23 states have call successors, (59) [2024-09-25 00:12:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:12:03,561 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2024-09-25 00:12:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-25 00:12:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 45 states have internal predecessors, (90), 23 states have call successors, (24), 1 states have call predecessors, (24), 21 states have return successors, (59), 21 states have call predecessors, (59), 23 states have call successors, (59) Word has length 127 [2024-09-25 00:12:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:12:03,563 INFO L225 Difference]: With dead ends: 79 [2024-09-25 00:12:03,563 INFO L226 Difference]: Without dead ends: 75 [2024-09-25 00:12:03,564 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 254 SyntacticMatches, 21 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1345, Invalid=2687, Unknown=0, NotChecked=0, Total=4032 [2024-09-25 00:12:03,565 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 143 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:12:03,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 195 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:12:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-25 00:12:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-09-25 00:12:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2024-09-25 00:12:03,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2024-09-25 00:12:03,569 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 127 [2024-09-25 00:12:03,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:12:03,570 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2024-09-25 00:12:03,570 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 45 states have internal predecessors, (90), 23 states have call successors, (24), 1 states have call predecessors, (24), 21 states have return successors, (59), 21 states have call predecessors, (59), 23 states have call successors, (59) [2024-09-25 00:12:03,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:12:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2024-09-25 00:12:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-25 00:12:03,570 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:12:03,570 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:12:03,591 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-25 00:12:03,771 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:12:03,771 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:12:03,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:12:03,771 INFO L85 PathProgramCache]: Analyzing trace with hash -653499876, now seen corresponding path program 20 times [2024-09-25 00:12:03,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:12:03,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021979750] [2024-09-25 00:12:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:12:03,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:12:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:04,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:12:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:04,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:12:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:04,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:05,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:05,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:05,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:06,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:06,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:06,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:07,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:07,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:07,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:07,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:07,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:07,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:07,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:07,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:07,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:08,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:08,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:08,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:08,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:12:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:12:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2024-09-25 00:12:08,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:12:08,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021979750] [2024-09-25 00:12:08,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021979750] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:12:08,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606687662] [2024-09-25 00:12:08,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:12:08,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:12:08,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:12:08,095 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:12:08,096 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-25 00:12:09,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:12:09,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:12:09,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 177 conjuncts are in the unsatisfiable core [2024-09-25 00:12:09,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:12:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 39 proven. 610 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2024-09-25 00:12:10,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:12:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 649 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2024-09-25 00:12:16,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606687662] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:12:16,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:12:16,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 49, 49] total 61 [2024-09-25 00:12:16,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109809432] [2024-09-25 00:12:16,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:12:16,786 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-25 00:12:16,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:12:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-25 00:12:16,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=3524, Unknown=0, NotChecked=0, Total=3660 [2024-09-25 00:12:16,787 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 61 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 37 states have internal predecessors, (67), 7 states have call successors, (8), 1 states have call predecessors, (8), 25 states have return successors, (26), 25 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-25 00:12:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:12:18,636 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2024-09-25 00:12:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-25 00:12:18,636 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 37 states have internal predecessors, (67), 7 states have call successors, (8), 1 states have call predecessors, (8), 25 states have return successors, (26), 25 states have call predecessors, (26), 7 states have call successors, (26) Word has length 133 [2024-09-25 00:12:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:12:18,637 INFO L225 Difference]: With dead ends: 78 [2024-09-25 00:12:18,637 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 00:12:18,640 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=691, Invalid=10865, Unknown=0, NotChecked=0, Total=11556 [2024-09-25 00:12:18,640 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 169 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-25 00:12:18,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1215 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-25 00:12:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 00:12:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 00:12:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-25 00:12:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 00:12:18,641 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 133 [2024-09-25 00:12:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:12:18,641 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 00:12:18,642 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 37 states have internal predecessors, (67), 7 states have call successors, (8), 1 states have call predecessors, (8), 25 states have return successors, (26), 25 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-25 00:12:18,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:12:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 00:12:18,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 00:12:18,644 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 00:12:18,665 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-25 00:12:18,845 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-25 00:12:18,848 INFO L408 BasicCegarLoop]: Path program histogram: [20, 1] [2024-09-25 00:12:18,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 00:12:19,449 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 00:12:19,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:12:19 BoogieIcfgContainer [2024-09-25 00:12:19,461 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 00:12:19,461 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 00:12:19,461 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 00:12:19,462 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 00:12:19,462 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:09:35" (3/4) ... [2024-09-25 00:12:19,463 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 00:12:19,524 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 00:12:19,524 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 00:12:19,525 INFO L158 Benchmark]: Toolchain (without parser) took 164988.53ms. Allocated memory was 163.6MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 123.4MB in the beginning and 822.3MB in the end (delta: -698.9MB). Peak memory consumption was 631.6MB. Max. memory is 16.1GB. [2024-09-25 00:12:19,525 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:12:19,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.21ms. Allocated memory is still 163.6MB. Free memory was 123.4MB in the beginning and 112.2MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 00:12:19,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.44ms. Allocated memory is still 163.6MB. Free memory was 112.2MB in the beginning and 111.2MB in the end (delta: 987.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:12:19,526 INFO L158 Benchmark]: Boogie Preprocessor took 26.11ms. Allocated memory is still 163.6MB. Free memory was 111.2MB in the beginning and 109.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:12:19,529 INFO L158 Benchmark]: RCFGBuilder took 235.91ms. Allocated memory is still 163.6MB. Free memory was 109.6MB in the beginning and 98.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 00:12:19,529 INFO L158 Benchmark]: TraceAbstraction took 164441.74ms. Allocated memory was 163.6MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 97.6MB in the beginning and 824.4MB in the end (delta: -726.8MB). Peak memory consumption was 602.2MB. Max. memory is 16.1GB. [2024-09-25 00:12:19,529 INFO L158 Benchmark]: Witness Printer took 63.12ms. Allocated memory is still 1.5GB. Free memory was 824.4MB in the beginning and 822.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:12:19,530 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.21ms. Allocated memory is still 163.6MB. Free memory was 123.4MB in the beginning and 112.2MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.44ms. Allocated memory is still 163.6MB. Free memory was 112.2MB in the beginning and 111.2MB in the end (delta: 987.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.11ms. Allocated memory is still 163.6MB. Free memory was 111.2MB in the beginning and 109.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 235.91ms. Allocated memory is still 163.6MB. Free memory was 109.6MB in the beginning and 98.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 164441.74ms. Allocated memory was 163.6MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 97.6MB in the beginning and 824.4MB in the end (delta: -726.8MB). Peak memory consumption was 602.2MB. Max. memory is 16.1GB. * Witness Printer took 63.12ms. Allocated memory is still 1.5GB. Free memory was 824.4MB in the beginning and 822.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 163.7s, OverallIterations: 21, TraceHistogramMax: 21, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2150 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1900 mSDsluCounter, 3606 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3335 mSDsCounter, 827 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4234 IncrementalHoareTripleChecker+Invalid, 5061 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 827 mSolverCounterUnsat, 271 mSDtfsCounter, 4234 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4077 GetRequests, 3075 SyntacticMatches, 210 SemanticMatches, 792 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13976 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=20, InterpolantAutomatonStates: 340, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 146.6s InterpolantComputationTime, 3053 NumberOfCodeBlocks, 3053 NumberOfCodeBlocksAsserted, 144 NumberOfCheckSat, 4512 ConstructedInterpolants, 0 QuantifiedInterpolants, 13567 SizeOfPredicates, 212 NumberOfNonLiveVariables, 4860 ConjunctsInSsa, 633 ConjunctsInUnsatCore, 61 InterpolantComputations, 1 PerfectInterpolantSequences, 11291/26460 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum. Ensures: (\result == ((long long) n + m)) RESULT: Ultimate proved your program to be correct! [2024-09-25 00:12:19,602 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE