./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/cohencu-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/cohencu-ll.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 bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 15:51:30,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 15:51:30,784 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 15:51:30,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 15:51:30,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 15:51:30,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 15:51:30,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 15:51:30,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 15:51:30,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 15:51:30,826 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 15:51:30,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 15:51:30,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 15:51:30,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 15:51:30,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 15:51:30,828 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 15:51:30,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 15:51:30,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 15:51:30,832 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 15:51:30,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 15:51:30,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 15:51:30,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 15:51:30,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 15:51:30,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 15:51:30,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 15:51:30,834 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 15:51:30,835 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 15:51:30,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 15:51:30,835 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 15:51:30,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 15:51:30,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 15:51:30,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 15:51:30,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 15:51:30,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:51:30,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 15:51:30,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 15:51:30,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 15:51:30,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 15:51:30,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 15:51:30,840 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 15:51:30,840 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 15:51:30,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 15:51:30,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 15:51:30,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 15:51:31,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 15:51:31,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 15:51:31,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 15:51:31,123 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 15:51:31,123 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 15:51:31,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2024-09-18 15:51:32,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 15:51:32,701 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 15:51:32,702 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2024-09-18 15:51:32,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3f3cfc334/c6b406fa3f56452ca496d0fb1fd2b283/FLAG77193f7e5 [2024-09-18 15:51:32,719 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3f3cfc334/c6b406fa3f56452ca496d0fb1fd2b283 [2024-09-18 15:51:32,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 15:51:32,721 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 15:51:32,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 15:51:32,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 15:51:32,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 15:51:32,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:32,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c5d52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32, skipping insertion in model container [2024-09-18 15:51:32,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:32,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 15:51:32,896 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/nla-digbench/cohencu-ll.c[588,601] [2024-09-18 15:51:32,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:51:32,941 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 15:51:32,954 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/nla-digbench/cohencu-ll.c[588,601] [2024-09-18 15:51:32,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:51:32,989 INFO L204 MainTranslator]: Completed translation [2024-09-18 15:51:32,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32 WrapperNode [2024-09-18 15:51:32,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 15:51:32,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 15:51:32,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 15:51:32,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 15:51:33,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,014 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 15:51:33,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 15:51:33,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 15:51:33,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 15:51:33,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 15:51:33,033 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,041 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,061 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]. [2024-09-18 15:51:33,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 15:51:33,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 15:51:33,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 15:51:33,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 15:51:33,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (1/1) ... [2024-09-18 15:51:33,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:51:33,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:33,128 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) [2024-09-18 15:51:33,131 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 [2024-09-18 15:51:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 15:51:33,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 15:51:33,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 15:51:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 15:51:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 15:51:33,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 15:51:33,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 15:51:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 15:51:33,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 15:51:33,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 15:51:33,239 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 15:51:33,242 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 15:51:33,449 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-09-18 15:51:33,450 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 15:51:33,476 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 15:51:33,476 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-18 15:51:33,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:51:33 BoogieIcfgContainer [2024-09-18 15:51:33,476 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 15:51:33,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 15:51:33,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 15:51:33,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 15:51:33,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:51:32" (1/3) ... [2024-09-18 15:51:33,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd5a4a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:51:33, skipping insertion in model container [2024-09-18 15:51:33,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:51:32" (2/3) ... [2024-09-18 15:51:33,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd5a4a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:51:33, skipping insertion in model container [2024-09-18 15:51:33,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:51:33" (3/3) ... [2024-09-18 15:51:33,484 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2024-09-18 15:51:33,497 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 15:51:33,497 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 15:51:33,551 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 15:51:33,558 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;@6f3baff3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 15:51:33,558 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 15:51:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-18 15:51:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-18 15:51:33,574 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:33,575 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:33,576 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:33,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:33,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1514194138, now seen corresponding path program 1 times [2024-09-18 15:51:33,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:33,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982566366] [2024-09-18 15:51:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:33,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:51:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:33,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:33,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982566366] [2024-09-18 15:51:33,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982566366] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:33,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:33,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-18 15:51:33,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214442047] [2024-09-18 15:51:33,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:33,776 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-18 15:51:33,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:33,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-18 15:51:33,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:51:33,804 INFO L87 Difference]: Start difference. First operand has 28 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:51:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:33,828 INFO L93 Difference]: Finished difference Result 51 states and 88 transitions. [2024-09-18 15:51:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-18 15:51:33,831 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-18 15:51:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:33,838 INFO L225 Difference]: With dead ends: 51 [2024-09-18 15:51:33,838 INFO L226 Difference]: Without dead ends: 24 [2024-09-18 15:51:33,841 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:51:33,845 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:33,846 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:51:33,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-18 15:51:33,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-18 15:51:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-18 15:51:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2024-09-18 15:51:33,884 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2024-09-18 15:51:33,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:33,884 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2024-09-18 15:51:33,885 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:51:33,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:33,886 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2024-09-18 15:51:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-18 15:51:33,886 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:33,886 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:33,887 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 15:51:33,887 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:33,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1502813976, now seen corresponding path program 1 times [2024-09-18 15:51:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:33,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185616236] [2024-09-18 15:51:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:34,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:51:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:34,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185616236] [2024-09-18 15:51:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185616236] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:34,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:34,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:51:34,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70799026] [2024-09-18 15:51:34,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:34,159 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:51:34,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:34,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:51:34,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:51:34,167 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:51:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:34,324 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-09-18 15:51:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:51:34,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-18 15:51:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:34,326 INFO L225 Difference]: With dead ends: 30 [2024-09-18 15:51:34,326 INFO L226 Difference]: Without dead ends: 28 [2024-09-18 15:51:34,327 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:51:34,328 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:34,329 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:51:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-18 15:51:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-18 15:51:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-18 15:51:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-09-18 15:51:34,346 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2024-09-18 15:51:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:34,346 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-09-18 15:51:34,346 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-18 15:51:34,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:34,347 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-09-18 15:51:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-18 15:51:34,348 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:34,348 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:34,348 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 15:51:34,348 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:34,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:34,349 INFO L85 PathProgramCache]: Analyzing trace with hash -847684307, now seen corresponding path program 1 times [2024-09-18 15:51:34,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:34,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111335753] [2024-09-18 15:51:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:34,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:34,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135907167] [2024-09-18 15:51:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:34,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:34,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:34,375 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) [2024-09-18 15:51:34,377 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 15:51:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:34,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:51:34,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:51:34,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:51:34,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:34,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111335753] [2024-09-18 15:51:34,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:34,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135907167] [2024-09-18 15:51:34,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135907167] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:34,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:34,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:51:34,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519991847] [2024-09-18 15:51:34,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:34,525 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:51:34,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:51:34,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:51:34,527 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-18 15:51:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:34,595 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2024-09-18 15:51:34,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:51:34,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-09-18 15:51:34,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:34,597 INFO L225 Difference]: With dead ends: 47 [2024-09-18 15:51:34,597 INFO L226 Difference]: Without dead ends: 45 [2024-09-18 15:51:34,598 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:51:34,599 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:34,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 108 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:51:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-18 15:51:34,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2024-09-18 15:51:34,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-18 15:51:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2024-09-18 15:51:34,620 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 15 [2024-09-18 15:51:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:34,620 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2024-09-18 15:51:34,620 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-18 15:51:34,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2024-09-18 15:51:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-18 15:51:34,622 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:34,622 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:34,639 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 15:51:34,826 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:34,827 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:34,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash -910377992, now seen corresponding path program 1 times [2024-09-18 15:51:34,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:34,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742761874] [2024-09-18 15:51:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:34,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:34,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802647448] [2024-09-18 15:51:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:34,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:34,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:34,859 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) [2024-09-18 15:51:34,860 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 15:51:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:34,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:51:34,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:51:34,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:51:34,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:34,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742761874] [2024-09-18 15:51:34,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:34,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802647448] [2024-09-18 15:51:34,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802647448] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:34,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:34,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:51:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010576841] [2024-09-18 15:51:34,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:34,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:51:34,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:51:34,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:51:34,982 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:51:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:35,079 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2024-09-18 15:51:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:51:35,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-09-18 15:51:35,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:35,083 INFO L225 Difference]: With dead ends: 51 [2024-09-18 15:51:35,083 INFO L226 Difference]: Without dead ends: 49 [2024-09-18 15:51:35,084 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:51:35,085 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:35,085 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 105 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:51:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-18 15:51:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-09-18 15:51:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-18 15:51:35,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2024-09-18 15:51:35,103 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 20 [2024-09-18 15:51:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:35,103 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2024-09-18 15:51:35,103 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-18 15:51:35,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2024-09-18 15:51:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-18 15:51:35,105 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:35,105 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:35,121 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-18 15:51:35,306 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:35,306 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:35,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1050084403, now seen corresponding path program 1 times [2024-09-18 15:51:35,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:35,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15077795] [2024-09-18 15:51:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:35,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:35,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054645100] [2024-09-18 15:51:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:35,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:35,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:35,334 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) [2024-09-18 15:51:35,336 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 15:51:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:35,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-18 15:51:35,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 15:51:35,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:51:35,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:35,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15077795] [2024-09-18 15:51:35,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:35,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054645100] [2024-09-18 15:51:35,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054645100] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:51:35,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:51:35,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:51:35,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476956975] [2024-09-18 15:51:35,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:51:35,494 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:51:35,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:35,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:51:35,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:51:35,495 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 15:51:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:35,626 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-09-18 15:51:35,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:51:35,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2024-09-18 15:51:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:35,628 INFO L225 Difference]: With dead ends: 59 [2024-09-18 15:51:35,628 INFO L226 Difference]: Without dead ends: 47 [2024-09-18 15:51:35,629 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:51:35,630 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:35,630 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 97 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:51:35,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-18 15:51:35,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-18 15:51:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-18 15:51:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2024-09-18 15:51:35,650 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 25 [2024-09-18 15:51:35,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:35,650 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2024-09-18 15:51:35,651 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 15:51:35,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2024-09-18 15:51:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-18 15:51:35,652 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:35,652 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:35,669 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-18 15:51:35,853 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:35,853 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:35,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash -917134408, now seen corresponding path program 1 times [2024-09-18 15:51:35,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:35,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640043468] [2024-09-18 15:51:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:35,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:35,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793921935] [2024-09-18 15:51:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:35,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:35,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:35,896 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) [2024-09-18 15:51:35,900 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 15:51:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:35,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-18 15:51:35,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-18 15:51:36,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:51:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-18 15:51:36,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:36,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640043468] [2024-09-18 15:51:36,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:36,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793921935] [2024-09-18 15:51:36,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793921935] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:51:36,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:51:36,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-09-18 15:51:36,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431086870] [2024-09-18 15:51:36,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:51:36,276 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-18 15:51:36,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-18 15:51:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-18 15:51:36,278 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2024-09-18 15:51:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:36,585 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2024-09-18 15:51:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-18 15:51:36,586 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 42 [2024-09-18 15:51:36,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:36,587 INFO L225 Difference]: With dead ends: 70 [2024-09-18 15:51:36,588 INFO L226 Difference]: Without dead ends: 68 [2024-09-18 15:51:36,588 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-09-18 15:51:36,589 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:36,589 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 174 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:51:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-18 15:51:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2024-09-18 15:51:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-18 15:51:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-09-18 15:51:36,615 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 42 [2024-09-18 15:51:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:36,616 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-09-18 15:51:36,617 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2024-09-18 15:51:36,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-09-18 15:51:36,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-18 15:51:36,618 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:36,618 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:36,635 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-18 15:51:36,822 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:36,823 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:36,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash 936236109, now seen corresponding path program 2 times [2024-09-18 15:51:36,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:36,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941301786] [2024-09-18 15:51:36,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:36,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:36,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261216761] [2024-09-18 15:51:36,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:51:36,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:36,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:36,854 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) [2024-09-18 15:51:36,856 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 15:51:36,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:51:36,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:51:36,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-18 15:51:36,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:37,025 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-18 15:51:37,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:51:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-18 15:51:37,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:37,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941301786] [2024-09-18 15:51:37,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:37,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261216761] [2024-09-18 15:51:37,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261216761] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:51:37,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:51:37,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-09-18 15:51:37,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694188249] [2024-09-18 15:51:37,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:51:37,178 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-18 15:51:37,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:37,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-18 15:51:37,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-18 15:51:37,181 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2024-09-18 15:51:41,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-18 15:51:41,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:41,157 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2024-09-18 15:51:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-18 15:51:41,158 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 47 [2024-09-18 15:51:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:41,159 INFO L225 Difference]: With dead ends: 82 [2024-09-18 15:51:41,159 INFO L226 Difference]: Without dead ends: 80 [2024-09-18 15:51:41,160 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-09-18 15:51:41,160 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:41,161 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 102 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-09-18 15:51:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-18 15:51:41,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-09-18 15:51:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 41 states have internal predecessors, (42), 27 states have call successors, (27), 12 states have call predecessors, (27), 11 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-18 15:51:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2024-09-18 15:51:41,190 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 47 [2024-09-18 15:51:41,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:41,190 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2024-09-18 15:51:41,191 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2024-09-18 15:51:41,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2024-09-18 15:51:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-18 15:51:41,192 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:41,192 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:41,209 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 15:51:41,396 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-18 15:51:41,397 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:41,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:41,397 INFO L85 PathProgramCache]: Analyzing trace with hash -78458728, now seen corresponding path program 3 times [2024-09-18 15:51:41,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:41,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219020979] [2024-09-18 15:51:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:41,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:41,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515078227] [2024-09-18 15:51:41,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:51:41,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:41,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:41,419 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) [2024-09-18 15:51:41,426 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 15:51:41,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-18 15:51:41,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:51:41,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-18 15:51:41,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-18 15:51:41,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:51:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-18 15:51:41,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:41,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219020979] [2024-09-18 15:51:41,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515078227] [2024-09-18 15:51:41,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515078227] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:51:41,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:51:41,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-09-18 15:51:41,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264339960] [2024-09-18 15:51:41,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:51:41,704 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-18 15:51:41,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:41,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-18 15:51:41,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-18 15:51:41,705 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-18 15:51:41,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:41,954 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2024-09-18 15:51:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 15:51:41,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 52 [2024-09-18 15:51:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:41,956 INFO L225 Difference]: With dead ends: 90 [2024-09-18 15:51:41,956 INFO L226 Difference]: Without dead ends: 78 [2024-09-18 15:51:41,957 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-09-18 15:51:41,957 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:41,958 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 167 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:51:41,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-18 15:51:41,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2024-09-18 15:51:41,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 15 states have call successors, (15), 13 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-18 15:51:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2024-09-18 15:51:41,982 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 52 [2024-09-18 15:51:41,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:41,982 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2024-09-18 15:51:41,985 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-18 15:51:41,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2024-09-18 15:51:41,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-18 15:51:41,987 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:41,988 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:42,004 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-18 15:51:42,188 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:42,189 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:42,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:42,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1670205643, now seen corresponding path program 1 times [2024-09-18 15:51:42,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:42,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216206142] [2024-09-18 15:51:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:42,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:42,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555097546] [2024-09-18 15:51:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:42,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:42,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:42,212 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) [2024-09-18 15:51:42,216 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-18 15:51:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:42,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-18 15:51:42,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 21 proven. 38 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-18 15:51:42,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:51:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 23 proven. 36 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-18 15:51:42,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:42,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216206142] [2024-09-18 15:51:42,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:42,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555097546] [2024-09-18 15:51:42,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555097546] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:51:42,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:51:42,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-09-18 15:51:42,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074921607] [2024-09-18 15:51:42,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:51:42,911 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-18 15:51:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-18 15:51:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-09-18 15:51:42,912 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2024-09-18 15:51:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:43,246 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2024-09-18 15:51:43,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-18 15:51:43,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 68 [2024-09-18 15:51:43,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:43,251 INFO L225 Difference]: With dead ends: 98 [2024-09-18 15:51:43,251 INFO L226 Difference]: Without dead ends: 94 [2024-09-18 15:51:43,252 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-09-18 15:51:43,253 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:43,254 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 116 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:51:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-18 15:51:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 70. [2024-09-18 15:51:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-18 15:51:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2024-09-18 15:51:43,286 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 68 [2024-09-18 15:51:43,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:43,286 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2024-09-18 15:51:43,286 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2024-09-18 15:51:43,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2024-09-18 15:51:43,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-18 15:51:43,288 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:43,288 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:43,305 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-18 15:51:43,488 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:43,489 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:43,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1778312624, now seen corresponding path program 1 times [2024-09-18 15:51:43,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:43,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023149820] [2024-09-18 15:51:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:43,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:43,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153449161] [2024-09-18 15:51:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:43,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:43,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:43,528 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) [2024-09-18 15:51:43,529 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-18 15:51:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:51:43,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-18 15:51:43,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-18 15:51:43,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:51:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-18 15:51:44,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:44,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023149820] [2024-09-18 15:51:44,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:44,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153449161] [2024-09-18 15:51:44,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153449161] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:51:44,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:51:44,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-18 15:51:44,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516769628] [2024-09-18 15:51:44,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:51:44,131 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-18 15:51:44,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:44,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-18 15:51:44,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-18 15:51:44,135 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2024-09-18 15:51:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:44,591 INFO L93 Difference]: Finished difference Result 117 states and 135 transitions. [2024-09-18 15:51:44,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-18 15:51:44,592 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 73 [2024-09-18 15:51:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:44,593 INFO L225 Difference]: With dead ends: 117 [2024-09-18 15:51:44,593 INFO L226 Difference]: Without dead ends: 103 [2024-09-18 15:51:44,594 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-09-18 15:51:44,594 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:44,594 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 110 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:51:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-18 15:51:44,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-09-18 15:51:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 30 states have call successors, (30), 17 states have call predecessors, (30), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-18 15:51:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2024-09-18 15:51:44,653 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 73 [2024-09-18 15:51:44,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:44,655 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2024-09-18 15:51:44,656 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2024-09-18 15:51:44,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:44,656 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2024-09-18 15:51:44,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-09-18 15:51:44,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:51:44,661 INFO L216 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:44,679 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-18 15:51:44,862 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:44,862 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:51:44,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1904053083, now seen corresponding path program 2 times [2024-09-18 15:51:44,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:51:44,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603311235] [2024-09-18 15:51:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:51:44,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:51:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:51:44,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [16412302] [2024-09-18 15:51:44,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:51:44,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:51:44,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:51:44,938 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) [2024-09-18 15:51:44,939 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-18 15:51:45,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:51:45,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:51:45,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-18 15:51:45,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:51:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 89 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-09-18 15:51:45,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:51:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 47 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2024-09-18 15:51:46,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:51:46,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603311235] [2024-09-18 15:51:46,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:51:46,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16412302] [2024-09-18 15:51:46,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16412302] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:51:46,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:51:46,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2024-09-18 15:51:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413142925] [2024-09-18 15:51:46,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:51:46,280 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-18 15:51:46,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:51:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-18 15:51:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-09-18 15:51:46,281 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2024-09-18 15:51:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:51:46,883 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2024-09-18 15:51:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-18 15:51:46,885 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) Word has length 154 [2024-09-18 15:51:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:51:46,886 INFO L225 Difference]: With dead ends: 131 [2024-09-18 15:51:46,886 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 15:51:46,887 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 287 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2024-09-18 15:51:46,887 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:51:46,887 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 252 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:51:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 15:51:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 15:51:46,888 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) [2024-09-18 15:51:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 15:51:46,890 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2024-09-18 15:51:46,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:51:46,890 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 15:51:46,890 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2024-09-18 15:51:46,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:51:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 15:51:46,891 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 15:51:46,893 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 15:51:46,911 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-18 15:51:47,097 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-18 15:51:47,100 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2024-09-18 15:51:47,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 15:51:51,921 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 15:51:51,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 03:51:51 BoogieIcfgContainer [2024-09-18 15:51:51,942 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 15:51:51,942 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 15:51:51,942 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 15:51:51,943 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 15:51:51,943 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:51:33" (3/4) ... [2024-09-18 15:51:51,945 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 15:51:51,997 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 15:51:51,997 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 15:51:51,997 INFO L158 Benchmark]: Toolchain (without parser) took 19276.16ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 103.7MB in the beginning and 103.4MB in the end (delta: 272.0kB). Peak memory consumption was 85.7MB. Max. memory is 16.1GB. [2024-09-18 15:51:51,998 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory was 122.6MB in the beginning and 122.3MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:51:51,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.19ms. Allocated memory is still 159.4MB. Free memory was 103.7MB in the beginning and 91.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-18 15:51:51,998 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.17ms. Allocated memory is still 159.4MB. Free memory was 91.9MB in the beginning and 90.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 15:51:51,998 INFO L158 Benchmark]: Boogie Preprocessor took 63.67ms. Allocated memory is still 159.4MB. Free memory was 90.8MB in the beginning and 89.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:51:51,999 INFO L158 Benchmark]: RCFGBuilder took 397.32ms. Allocated memory is still 159.4MB. Free memory was 89.1MB in the beginning and 75.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-18 15:51:51,999 INFO L158 Benchmark]: TraceAbstraction took 18462.59ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 74.4MB in the beginning and 106.6MB in the end (delta: -32.1MB). Peak memory consumption was 92.0MB. Max. memory is 16.1GB. [2024-09-18 15:51:51,999 INFO L158 Benchmark]: Witness Printer took 54.63ms. Allocated memory is still 243.3MB. Free memory was 105.5MB in the beginning and 103.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 15:51:52,001 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory was 122.6MB in the beginning and 122.3MB in the end (delta: 293.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.19ms. Allocated memory is still 159.4MB. Free memory was 103.7MB in the beginning and 91.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.17ms. Allocated memory is still 159.4MB. Free memory was 91.9MB in the beginning and 90.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 63.67ms. Allocated memory is still 159.4MB. Free memory was 90.8MB in the beginning and 89.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 397.32ms. Allocated memory is still 159.4MB. Free memory was 89.1MB in the beginning and 75.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18462.59ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 74.4MB in the beginning and 106.6MB in the end (delta: -32.1MB). Peak memory consumption was 92.0MB. Max. memory is 16.1GB. * Witness Printer took 54.63ms. Allocated memory is still 243.3MB. Free memory was 105.5MB in the beginning and 103.4MB 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: 17]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.6s, OverallIterations: 11, TraceHistogramMax: 28, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 1354 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1037 mSDsCounter, 250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1201 IncrementalHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 250 mSolverCounterUnsat, 317 mSDtfsCounter, 1201 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 964 GetRequests, 848 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=10, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 63 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1012 NumberOfCodeBlocks, 982 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 935 ConstructedInterpolants, 0 QuantifiedInterpolants, 4147 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1164 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 4408/4792 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 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((3 * ((__int128) n * n)) + (((__int128) n * n) * n)) + ((__int128) n * 3)) + 1) == ((__int128) y + x)) && ((((__int128) n * 6) + 6) == z)) && ((((__int128) n * n) * n) == x)) && ((n < (a + 1)) || (((__int128) z * x) == (((__int128) x * 12) + (((__int128) a * x) * 6))))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-18 15:51:52,021 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