./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 10:53:24,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 10:53:24,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 10:53:24,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 10:53:24,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 10:53:24,898 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 10:53:24,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 10:53:24,899 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 10:53:24,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 10:53:24,899 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 10:53:24,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 10:53:24,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 10:53:24,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 10:53:24,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 10:53:24,903 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 10:53:24,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 10:53:24,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 10:53:24,904 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 10:53:24,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 10:53:24,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 10:53:24,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 10:53:24,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 10:53:24,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 10:53:24,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 10:53:24,907 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 10:53:24,907 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 10:53:24,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 10:53:24,908 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 10:53:24,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 10:53:24,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 10:53:24,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 10:53:24,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 10:53:24,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:53:24,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 10:53:24,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 10:53:24,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 10:53:24,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 10:53:24,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 10:53:24,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 10:53:24,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 10:53:24,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 10:53:24,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 10:53:24,913 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 -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 10:53:25,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 10:53:25,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 10:53:25,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 10:53:25,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 10:53:25,265 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 10:53:25,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-09-25 10:53:26,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 10:53:26,957 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 10:53:26,958 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-09-25 10:53:26,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/816f9e6bc/f5af5f0fb3214547922ea17da2feeeb0/FLAGf05be9cef [2024-09-25 10:53:26,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/816f9e6bc/f5af5f0fb3214547922ea17da2feeeb0 [2024-09-25 10:53:26,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 10:53:26,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 10:53:26,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 10:53:26,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 10:53:26,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 10:53:26,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:53:26" (1/1) ... [2024-09-25 10:53:26,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795b3324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:26, skipping insertion in model container [2024-09-25 10:53:26,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:53:26" (1/1) ... [2024-09-25 10:53:27,012 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 10:53:27,160 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-scaling/egcd2-ll_valuebound2.c[490,503] [2024-09-25 10:53:27,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:53:27,196 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 10:53:27,209 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-scaling/egcd2-ll_valuebound2.c[490,503] [2024-09-25 10:53:27,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:53:27,253 INFO L204 MainTranslator]: Completed translation [2024-09-25 10:53:27,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27 WrapperNode [2024-09-25 10:53:27,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 10:53:27,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 10:53:27,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 10:53:27,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 10:53:27,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,276 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 10:53:27,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 10:53:27,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 10:53:27,277 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 10:53:27,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 10:53:27,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,311 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-25 10:53:27,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 10:53:27,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 10:53:27,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 10:53:27,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 10:53:27,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (1/1) ... [2024-09-25 10:53:27,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:53:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:27,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-25 10:53:27,374 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-25 10:53:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 10:53:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 10:53:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 10:53:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 10:53:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 10:53:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 10:53:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 10:53:27,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 10:53:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 10:53:27,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 10:53:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 10:53:27,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 10:53:27,480 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 10:53:27,483 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 10:53:27,705 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-25 10:53:27,705 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 10:53:27,737 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 10:53:27,738 INFO L317 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-25 10:53:27,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:53:27 BoogieIcfgContainer [2024-09-25 10:53:27,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 10:53:27,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 10:53:27,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 10:53:27,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 10:53:27,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:53:26" (1/3) ... [2024-09-25 10:53:27,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3d75c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:53:27, skipping insertion in model container [2024-09-25 10:53:27,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:53:27" (2/3) ... [2024-09-25 10:53:27,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3d75c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:53:27, skipping insertion in model container [2024-09-25 10:53:27,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:53:27" (3/3) ... [2024-09-25 10:53:27,750 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2024-09-25 10:53:27,766 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 10:53:27,766 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 10:53:27,834 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 10:53:27,841 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;@60505ee1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 10:53:27,842 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 10:53:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-25 10:53:27,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-25 10:53:27,860 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:27,861 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:27,862 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:27,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2011850563, now seen corresponding path program 1 times [2024-09-25 10:53:27,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:27,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115260088] [2024-09-25 10:53:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:27,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:53:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:53:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:53:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:53:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:53:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:53:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:53:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:53:28,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:28,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115260088] [2024-09-25 10:53:28,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115260088] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:53:28,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:53:28,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 10:53:28,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098082441] [2024-09-25 10:53:28,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:53:28,077 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 10:53:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 10:53:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:53:28,103 INFO L87 Difference]: Start difference. First operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-25 10:53:28,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:28,137 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2024-09-25 10:53:28,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 10:53:28,139 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-25 10:53:28,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:28,146 INFO L225 Difference]: With dead ends: 70 [2024-09-25 10:53:28,146 INFO L226 Difference]: Without dead ends: 34 [2024-09-25 10:53:28,149 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:53:28,152 INFO L434 NwaCegarLoop]: 47 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, 47 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 [2024-09-25 10:53:28,153 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:53:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-25 10:53:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-25 10:53:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 10:53:28,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-09-25 10:53:28,186 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 42 [2024-09-25 10:53:28,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:28,186 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-09-25 10:53:28,187 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-25 10:53:28,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:28,187 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-09-25 10:53:28,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-25 10:53:28,189 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:28,189 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:28,190 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 10:53:28,190 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:28,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:28,191 INFO L85 PathProgramCache]: Analyzing trace with hash -213832741, now seen corresponding path program 1 times [2024-09-25 10:53:28,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:28,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160785939] [2024-09-25 10:53:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:28,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:53:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:53:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:53:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:53:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:53:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:53:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:53:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 10:53:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:28,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160785939] [2024-09-25 10:53:28,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160785939] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:28,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724984080] [2024-09-25 10:53:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:28,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:28,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:28,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:28,584 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 10:53:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:28,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 10:53:28,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 10:53:28,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:29,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724984080] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:29,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:53:29,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-09-25 10:53:29,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590883878] [2024-09-25 10:53:29,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:29,070 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-25 10:53:29,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:29,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-25 10:53:29,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-09-25 10:53:29,072 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-25 10:53:29,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:29,374 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2024-09-25 10:53:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 10:53:29,375 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 43 [2024-09-25 10:53:29,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:29,377 INFO L225 Difference]: With dead ends: 55 [2024-09-25 10:53:29,378 INFO L226 Difference]: Without dead ends: 47 [2024-09-25 10:53:29,378 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-25 10:53:29,379 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:29,380 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 233 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:53:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-25 10:53:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-09-25 10:53:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:53:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2024-09-25 10:53:29,407 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 43 [2024-09-25 10:53:29,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:29,408 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2024-09-25 10:53:29,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-25 10:53:29,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2024-09-25 10:53:29,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-25 10:53:29,410 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:29,410 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:29,430 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-25 10:53:29,614 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:29,615 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:29,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1967462229, now seen corresponding path program 1 times [2024-09-25 10:53:29,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:29,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843738219] [2024-09-25 10:53:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:29,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:53:29,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245158045] [2024-09-25 10:53:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:29,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:29,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:29,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:29,664 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 10:53:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:29,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 10:53:29,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:53:29,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:53:29,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:29,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843738219] [2024-09-25 10:53:29,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:53:29,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245158045] [2024-09-25 10:53:29,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245158045] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:53:29,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:53:29,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:53:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068370848] [2024-09-25 10:53:29,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:53:29,782 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:53:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:53:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:53:29,783 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-25 10:53:29,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:29,840 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2024-09-25 10:53:29,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:53:29,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2024-09-25 10:53:29,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:29,843 INFO L225 Difference]: With dead ends: 65 [2024-09-25 10:53:29,843 INFO L226 Difference]: Without dead ends: 63 [2024-09-25 10:53:29,843 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 10:53:29,844 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 144 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 [2024-09-25 10:53:29,845 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:53:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-25 10:53:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-09-25 10:53:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:53:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-09-25 10:53:29,870 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 44 [2024-09-25 10:53:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:29,870 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-09-25 10:53:29,871 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-25 10:53:29,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2024-09-25 10:53:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-25 10:53:29,873 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:29,873 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:29,890 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-25 10:53:30,074 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:30,074 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:30,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:30,075 INFO L85 PathProgramCache]: Analyzing trace with hash -189867411, now seen corresponding path program 1 times [2024-09-25 10:53:30,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:30,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188734427] [2024-09-25 10:53:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:30,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:53:30,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919026678] [2024-09-25 10:53:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:30,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:30,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:30,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:30,109 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 10:53:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:30,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-25 10:53:30,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-25 10:53:30,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:53:30,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:30,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188734427] [2024-09-25 10:53:30,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:53:30,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919026678] [2024-09-25 10:53:30,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919026678] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:53:30,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:53:30,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:53:30,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108111720] [2024-09-25 10:53:30,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:53:30,270 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:53:30,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:30,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:53:30,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:53:30,271 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-25 10:53:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:30,329 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-09-25 10:53:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:53:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-25 10:53:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:30,336 INFO L225 Difference]: With dead ends: 61 [2024-09-25 10:53:30,336 INFO L226 Difference]: Without dead ends: 59 [2024-09-25 10:53:30,336 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 10:53:30,337 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:30,338 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 154 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:53:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-25 10:53:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-09-25 10:53:30,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:53:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-09-25 10:53:30,350 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 49 [2024-09-25 10:53:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:30,350 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-09-25 10:53:30,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-25 10:53:30,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-09-25 10:53:30,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-25 10:53:30,352 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:30,352 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:30,368 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 10:53:30,552 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:30,553 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:30,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash -470549715, now seen corresponding path program 1 times [2024-09-25 10:53:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:30,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042574756] [2024-09-25 10:53:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:53:30,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825560253] [2024-09-25 10:53:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:30,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:30,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:30,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:30,591 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 10:53:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:30,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-25 10:53:30,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-25 10:53:30,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:53:30,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:30,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042574756] [2024-09-25 10:53:30,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:53:30,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825560253] [2024-09-25 10:53:30,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825560253] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:53:30,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:53:30,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:53:30,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654010629] [2024-09-25 10:53:30,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:53:30,826 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:53:30,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:30,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:53:30,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:53:30,826 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-25 10:53:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:30,896 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2024-09-25 10:53:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 10:53:30,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 59 [2024-09-25 10:53:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:30,898 INFO L225 Difference]: With dead ends: 65 [2024-09-25 10:53:30,898 INFO L226 Difference]: Without dead ends: 63 [2024-09-25 10:53:30,898 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 10:53:30,899 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:30,899 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 141 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:53:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-25 10:53:30,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-09-25 10:53:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-25 10:53:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-09-25 10:53:30,918 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 59 [2024-09-25 10:53:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:30,920 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-09-25 10:53:30,920 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-25 10:53:30,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-09-25 10:53:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-25 10:53:30,921 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:30,922 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:30,939 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 10:53:31,122 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:31,122 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:31,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash 487403380, now seen corresponding path program 1 times [2024-09-25 10:53:31,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:31,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581897086] [2024-09-25 10:53:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:31,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:53:31,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678785712] [2024-09-25 10:53:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:31,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:31,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:31,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:31,149 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 10:53:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-25 10:53:31,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-25 10:53:31,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-25 10:53:31,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581897086] [2024-09-25 10:53:31,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:53:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678785712] [2024-09-25 10:53:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678785712] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:53:31,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:53:31,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2024-09-25 10:53:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542442498] [2024-09-25 10:53:31,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:31,368 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 10:53:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 10:53:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-25 10:53:31,369 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-25 10:53:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:31,480 INFO L93 Difference]: Finished difference Result 90 states and 121 transitions. [2024-09-25 10:53:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 10:53:31,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2024-09-25 10:53:31,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:31,484 INFO L225 Difference]: With dead ends: 90 [2024-09-25 10:53:31,484 INFO L226 Difference]: Without dead ends: 88 [2024-09-25 10:53:31,484 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-25 10:53:31,485 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:31,485 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 233 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:53:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-25 10:53:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2024-09-25 10:53:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:53:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-09-25 10:53:31,513 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 66 [2024-09-25 10:53:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:31,513 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-09-25 10:53:31,514 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-25 10:53:31,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-09-25 10:53:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-25 10:53:31,515 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:31,515 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:31,534 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 10:53:31,716 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-25 10:53:31,716 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:31,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:31,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2098403842, now seen corresponding path program 1 times [2024-09-25 10:53:31,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:31,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794554743] [2024-09-25 10:53:31,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:31,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:53:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:53:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:53:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:53:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:53:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:53:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:53:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:53:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:53:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:53:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:53:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-25 10:53:31,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:31,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794554743] [2024-09-25 10:53:31,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794554743] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:31,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324453539] [2024-09-25 10:53:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:31,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:31,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:31,938 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:31,939 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 10:53:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:31,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-25 10:53:31,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-25 10:53:32,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-25 10:53:32,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324453539] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:53:32,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:53:32,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-09-25 10:53:32,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433561214] [2024-09-25 10:53:32,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:32,141 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-25 10:53:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:32,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-25 10:53:32,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-09-25 10:53:32,142 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-25 10:53:32,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:32,332 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2024-09-25 10:53:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 10:53:32,333 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 68 [2024-09-25 10:53:32,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:32,334 INFO L225 Difference]: With dead ends: 105 [2024-09-25 10:53:32,334 INFO L226 Difference]: Without dead ends: 97 [2024-09-25 10:53:32,335 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-09-25 10:53:32,336 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 32 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:32,336 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 311 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:53:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-25 10:53:32,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2024-09-25 10:53:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-25 10:53:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 121 transitions. [2024-09-25 10:53:32,373 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 121 transitions. Word has length 68 [2024-09-25 10:53:32,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:32,375 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 121 transitions. [2024-09-25 10:53:32,375 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-25 10:53:32,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 121 transitions. [2024-09-25 10:53:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-25 10:53:32,376 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:32,377 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:32,393 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 10:53:32,577 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:32,577 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:32,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:32,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1520512592, now seen corresponding path program 1 times [2024-09-25 10:53:32,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:32,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931647668] [2024-09-25 10:53:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:32,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:53:32,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864904714] [2024-09-25 10:53:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:32,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:32,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:32,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:32,600 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 10:53:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:32,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-25 10:53:32,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-25 10:53:32,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:32,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931647668] [2024-09-25 10:53:32,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:53:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864904714] [2024-09-25 10:53:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864904714] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:32,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:53:32,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-09-25 10:53:32,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182484178] [2024-09-25 10:53:32,875 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:32,875 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-25 10:53:32,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:32,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-25 10:53:32,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-25 10:53:32,876 INFO L87 Difference]: Start difference. First operand 88 states and 121 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-25 10:53:32,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:32,997 INFO L93 Difference]: Finished difference Result 123 states and 172 transitions. [2024-09-25 10:53:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 10:53:32,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2024-09-25 10:53:32,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:32,999 INFO L225 Difference]: With dead ends: 123 [2024-09-25 10:53:32,999 INFO L226 Difference]: Without dead ends: 120 [2024-09-25 10:53:33,000 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-25 10:53:33,000 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:33,000 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 208 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:53:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-25 10:53:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2024-09-25 10:53:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 63 states have internal predecessors, (74), 47 states have call successors, (47), 9 states have call predecessors, (47), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-25 10:53:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 165 transitions. [2024-09-25 10:53:33,036 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 165 transitions. Word has length 74 [2024-09-25 10:53:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:33,036 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 165 transitions. [2024-09-25 10:53:33,036 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-25 10:53:33,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 165 transitions. [2024-09-25 10:53:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-25 10:53:33,037 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:33,038 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:33,058 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 10:53:33,238 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:33,238 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:33,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:33,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1071513618, now seen corresponding path program 2 times [2024-09-25 10:53:33,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:33,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024080671] [2024-09-25 10:53:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:33,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:53:33,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206220041] [2024-09-25 10:53:33,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:53:33,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:33,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:33,260 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:33,261 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 10:53:33,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:53:33,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:53:33,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-25 10:53:33,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-25 10:53:33,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:33,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:33,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024080671] [2024-09-25 10:53:33,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:53:33,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206220041] [2024-09-25 10:53:33,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206220041] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:33,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:53:33,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-25 10:53:33,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907495725] [2024-09-25 10:53:33,608 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:33,608 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 10:53:33,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:33,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 10:53:33,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-25 10:53:33,609 INFO L87 Difference]: Start difference. First operand 117 states and 165 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-25 10:53:33,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:33,794 INFO L93 Difference]: Finished difference Result 129 states and 175 transitions. [2024-09-25 10:53:33,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 10:53:33,795 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 79 [2024-09-25 10:53:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:33,796 INFO L225 Difference]: With dead ends: 129 [2024-09-25 10:53:33,796 INFO L226 Difference]: Without dead ends: 127 [2024-09-25 10:53:33,797 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-09-25 10:53:33,797 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:33,797 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 229 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:53:33,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-25 10:53:33,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-09-25 10:53:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 69 states have internal predecessors, (80), 47 states have call successors, (47), 11 states have call predecessors, (47), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-25 10:53:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions. [2024-09-25 10:53:33,826 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 79 [2024-09-25 10:53:33,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:33,827 INFO L474 AbstractCegarLoop]: Abstraction has 125 states and 171 transitions. [2024-09-25 10:53:33,827 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-25 10:53:33,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions. [2024-09-25 10:53:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-25 10:53:33,828 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:33,828 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:33,845 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-25 10:53:34,032 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:34,033 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:34,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash 807735120, now seen corresponding path program 3 times [2024-09-25 10:53:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:34,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185780302] [2024-09-25 10:53:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:53:34,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565906221] [2024-09-25 10:53:34,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:53:34,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:34,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:34,051 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:34,052 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 10:53:34,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-25 10:53:34,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:53:34,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-25 10:53:34,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-09-25 10:53:35,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:47,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:47,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185780302] [2024-09-25 10:53:47,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:53:47,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565906221] [2024-09-25 10:53:47,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565906221] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:47,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:53:47,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-25 10:53:47,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709233212] [2024-09-25 10:53:47,929 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:47,929 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 10:53:47,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:47,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 10:53:47,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=539, Unknown=1, NotChecked=0, Total=650 [2024-09-25 10:53:47,930 INFO L87 Difference]: Start difference. First operand 125 states and 171 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-25 10:53:48,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:48,435 INFO L93 Difference]: Finished difference Result 133 states and 178 transitions. [2024-09-25 10:53:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 10:53:48,435 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 84 [2024-09-25 10:53:48,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:48,438 INFO L225 Difference]: With dead ends: 133 [2024-09-25 10:53:48,438 INFO L226 Difference]: Without dead ends: 131 [2024-09-25 10:53:48,439 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=163, Invalid=706, Unknown=1, NotChecked=0, Total=870 [2024-09-25 10:53:48,440 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:48,440 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 271 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:53:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-25 10:53:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-09-25 10:53:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 72 states have internal predecessors, (83), 47 states have call successors, (47), 12 states have call predecessors, (47), 11 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-25 10:53:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2024-09-25 10:53:48,482 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 84 [2024-09-25 10:53:48,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:48,484 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2024-09-25 10:53:48,484 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-25 10:53:48,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2024-09-25 10:53:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-25 10:53:48,486 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:48,486 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:48,506 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-25 10:53:48,686 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-25 10:53:48,686 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:48,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:48,687 INFO L85 PathProgramCache]: Analyzing trace with hash -607760099, now seen corresponding path program 1 times [2024-09-25 10:53:48,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:48,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909896707] [2024-09-25 10:53:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:48,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:53:48,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068922926] [2024-09-25 10:53:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:48,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:48,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:48,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:48,707 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 10:53:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:48,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-25 10:53:48,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-25 10:53:49,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-25 10:53:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:50,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909896707] [2024-09-25 10:53:50,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:53:50,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068922926] [2024-09-25 10:53:50,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068922926] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:53:50,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:53:50,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-09-25 10:53:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846353022] [2024-09-25 10:53:50,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:50,212 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 10:53:50,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 10:53:50,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-09-25 10:53:50,213 INFO L87 Difference]: Start difference. First operand 129 states and 174 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-25 10:53:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:53,166 INFO L93 Difference]: Finished difference Result 229 states and 337 transitions. [2024-09-25 10:53:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-25 10:53:53,167 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 90 [2024-09-25 10:53:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:53,169 INFO L225 Difference]: With dead ends: 229 [2024-09-25 10:53:53,170 INFO L226 Difference]: Without dead ends: 225 [2024-09-25 10:53:53,173 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 10:53:53,174 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 75 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:53,174 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 451 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-25 10:53:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-09-25 10:53:53,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2024-09-25 10:53:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 112 states have (on average 1.2410714285714286) internal successors, (139), 115 states have internal predecessors, (139), 96 states have call successors, (96), 14 states have call predecessors, (96), 13 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2024-09-25 10:53:53,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 328 transitions. [2024-09-25 10:53:53,285 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 328 transitions. Word has length 90 [2024-09-25 10:53:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:53,285 INFO L474 AbstractCegarLoop]: Abstraction has 222 states and 328 transitions. [2024-09-25 10:53:53,286 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-25 10:53:53,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 328 transitions. [2024-09-25 10:53:53,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-25 10:53:53,288 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:53,288 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:53,301 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 10:53:53,489 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-25 10:53:53,489 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:53,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1117188045, now seen corresponding path program 4 times [2024-09-25 10:53:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:53,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849515123] [2024-09-25 10:53:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:53,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:53:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:53:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:53:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:53:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:53:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:53:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:53:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:53:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:53:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:53:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:53:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:53:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:53:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:53:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:53:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-25 10:53:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-09-25 10:53:53,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849515123] [2024-09-25 10:53:53,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849515123] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:53:53,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:53:53,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 10:53:53,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700668939] [2024-09-25 10:53:53,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:53:53,632 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 10:53:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 10:53:53,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 10:53:53,633 INFO L87 Difference]: Start difference. First operand 222 states and 328 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-25 10:53:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:53,776 INFO L93 Difference]: Finished difference Result 275 states and 404 transitions. [2024-09-25 10:53:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 10:53:53,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 99 [2024-09-25 10:53:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:53,780 INFO L225 Difference]: With dead ends: 275 [2024-09-25 10:53:53,780 INFO L226 Difference]: Without dead ends: 201 [2024-09-25 10:53:53,781 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-25 10:53:53,782 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:53,784 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 179 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:53:53,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-25 10:53:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2024-09-25 10:53:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 98 states have internal predecessors, (112), 80 states have call successors, (80), 14 states have call predecessors, (80), 13 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2024-09-25 10:53:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 269 transitions. [2024-09-25 10:53:53,861 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 269 transitions. Word has length 99 [2024-09-25 10:53:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:53,861 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 269 transitions. [2024-09-25 10:53:53,862 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-25 10:53:53,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 269 transitions. [2024-09-25 10:53:53,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-09-25 10:53:53,864 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:53,864 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:53,864 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-25 10:53:53,865 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:53,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2069519471, now seen corresponding path program 1 times [2024-09-25 10:53:53,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:53,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994922230] [2024-09-25 10:53:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:53,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:53:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:53:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:53:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:53:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:53:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:53:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:53:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:53:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:53:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:53:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:53:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:53:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:53:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:53:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:53:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:53:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:53:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:53:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-09-25 10:53:54,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:54,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994922230] [2024-09-25 10:53:54,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994922230] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:54,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151929226] [2024-09-25 10:53:54,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:54,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:54,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:54,204 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:54,205 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 10:53:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:54,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 10:53:54,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-09-25 10:53:54,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-09-25 10:53:54,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151929226] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:53:54,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:53:54,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-25 10:53:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729712627] [2024-09-25 10:53:54,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:54,474 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-25 10:53:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:54,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-25 10:53:54,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-25 10:53:54,475 INFO L87 Difference]: Start difference. First operand 189 states and 269 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-09-25 10:53:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:54,753 INFO L93 Difference]: Finished difference Result 255 states and 363 transitions. [2024-09-25 10:53:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 10:53:54,753 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 106 [2024-09-25 10:53:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:54,755 INFO L225 Difference]: With dead ends: 255 [2024-09-25 10:53:54,755 INFO L226 Difference]: Without dead ends: 168 [2024-09-25 10:53:54,756 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 243 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-09-25 10:53:54,756 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 31 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:54,757 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 303 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:53:54,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-25 10:53:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-25 10:53:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 89 states have internal predecessors, (99), 68 states have call successors, (68), 14 states have call predecessors, (68), 13 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-25 10:53:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 232 transitions. [2024-09-25 10:53:54,830 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 232 transitions. Word has length 106 [2024-09-25 10:53:54,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:54,831 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 232 transitions. [2024-09-25 10:53:54,831 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-09-25 10:53:54,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:54,831 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 232 transitions. [2024-09-25 10:53:54,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-25 10:53:54,832 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:54,832 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:54,849 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-25 10:53:55,033 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:55,033 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:55,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1527784632, now seen corresponding path program 1 times [2024-09-25 10:53:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:55,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154598079] [2024-09-25 10:53:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:55,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:53:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:53:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:53:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:53:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:53:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:53:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:53:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:53:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:53:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:53:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:53:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:53:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:53:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:53:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:53:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:53:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:53:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:53:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:53:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:53:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-09-25 10:53:55,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:55,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154598079] [2024-09-25 10:53:55,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154598079] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:55,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118227105] [2024-09-25 10:53:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:55,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:55,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:55,170 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:55,177 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 10:53:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:55,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 10:53:55,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 88 proven. 9 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-09-25 10:53:55,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-09-25 10:53:55,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118227105] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:53:55,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:53:55,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-09-25 10:53:55,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495096424] [2024-09-25 10:53:55,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:55,391 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 10:53:55,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:55,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 10:53:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-25 10:53:55,392 INFO L87 Difference]: Start difference. First operand 168 states and 232 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-25 10:53:55,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:55,626 INFO L93 Difference]: Finished difference Result 194 states and 271 transitions. [2024-09-25 10:53:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 10:53:55,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 120 [2024-09-25 10:53:55,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:55,628 INFO L225 Difference]: With dead ends: 194 [2024-09-25 10:53:55,629 INFO L226 Difference]: Without dead ends: 182 [2024-09-25 10:53:55,629 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 278 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-09-25 10:53:55,630 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 17 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:55,630 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 337 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:53:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-09-25 10:53:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 163. [2024-09-25 10:53:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 83 states have (on average 1.144578313253012) internal successors, (95), 85 states have internal predecessors, (95), 67 states have call successors, (67), 13 states have call predecessors, (67), 12 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-25 10:53:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 226 transitions. [2024-09-25 10:53:55,693 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 226 transitions. Word has length 120 [2024-09-25 10:53:55,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:55,693 INFO L474 AbstractCegarLoop]: Abstraction has 163 states and 226 transitions. [2024-09-25 10:53:55,693 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-25 10:53:55,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 226 transitions. [2024-09-25 10:53:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-25 10:53:55,695 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:55,695 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:55,711 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-25 10:53:55,895 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-25 10:53:55,896 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:55,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2141824020, now seen corresponding path program 2 times [2024-09-25 10:53:55,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:55,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407997701] [2024-09-25 10:53:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:55,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:53:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:53:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:53:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:53:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:53:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:53:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:53:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:53:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:53:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:53:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:53:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:53:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:53:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:53:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:53:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:53:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:53:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:53:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:53:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-25 10:53:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:53:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-09-25 10:53:56,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:53:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407997701] [2024-09-25 10:53:56,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407997701] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:53:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878133520] [2024-09-25 10:53:56,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:53:56,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:56,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:56,170 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:56,171 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 10:53:56,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:53:56,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:53:56,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 10:53:56,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 103 proven. 18 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-09-25 10:53:56,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:53:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-09-25 10:53:56,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878133520] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:53:56,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:53:56,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-09-25 10:53:56,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032054456] [2024-09-25 10:53:56,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:53:56,523 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 10:53:56,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:53:56,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 10:53:56,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-25 10:53:56,524 INFO L87 Difference]: Start difference. First operand 163 states and 226 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) [2024-09-25 10:53:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:53:56,784 INFO L93 Difference]: Finished difference Result 196 states and 273 transitions. [2024-09-25 10:53:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 10:53:56,784 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) Word has length 121 [2024-09-25 10:53:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:53:56,786 INFO L225 Difference]: With dead ends: 196 [2024-09-25 10:53:56,786 INFO L226 Difference]: Without dead ends: 160 [2024-09-25 10:53:56,787 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 271 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-09-25 10:53:56,787 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 25 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:53:56,787 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 413 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:53:56,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-25 10:53:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-25 10:53:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 80 states have (on average 1.1125) internal successors, (89), 82 states have internal predecessors, (89), 67 states have call successors, (67), 13 states have call predecessors, (67), 12 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-25 10:53:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2024-09-25 10:53:56,858 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 121 [2024-09-25 10:53:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:53:56,859 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2024-09-25 10:53:56,859 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) [2024-09-25 10:53:56,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2024-09-25 10:53:56,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-25 10:53:56,861 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:53:56,861 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:53:56,877 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-25 10:53:57,065 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-25 10:53:57,066 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:53:57,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:53:57,066 INFO L85 PathProgramCache]: Analyzing trace with hash -83573063, now seen corresponding path program 2 times [2024-09-25 10:53:57,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:53:57,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004417620] [2024-09-25 10:53:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:53:57,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:53:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:53:57,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465798006] [2024-09-25 10:53:57,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:53:57,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:53:57,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:53:57,094 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:53:57,096 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-25 10:53:57,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:53:57,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:53:57,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-25 10:53:57,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:53:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-25 10:53:58,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:54:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-09-25 10:54:00,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:54:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004417620] [2024-09-25 10:54:00,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:54:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465798006] [2024-09-25 10:54:00,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465798006] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:54:00,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:54:00,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2024-09-25 10:54:00,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298645760] [2024-09-25 10:54:00,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:54:00,053 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-25 10:54:00,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:54:00,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-25 10:54:00,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-09-25 10:54:00,054 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2024-09-25 10:54:02,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:54:02,686 INFO L93 Difference]: Finished difference Result 270 states and 385 transitions. [2024-09-25 10:54:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-25 10:54:02,687 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) Word has length 137 [2024-09-25 10:54:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:54:02,689 INFO L225 Difference]: With dead ends: 270 [2024-09-25 10:54:02,689 INFO L226 Difference]: Without dead ends: 237 [2024-09-25 10:54:02,690 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2024-09-25 10:54:02,690 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 118 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:54:02,691 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 544 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-25 10:54:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-09-25 10:54:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 227. [2024-09-25 10:54:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 118 states have internal predecessors, (132), 96 states have call successors, (96), 16 states have call predecessors, (96), 15 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2024-09-25 10:54:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 321 transitions. [2024-09-25 10:54:02,792 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 321 transitions. Word has length 137 [2024-09-25 10:54:02,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:54:02,792 INFO L474 AbstractCegarLoop]: Abstraction has 227 states and 321 transitions. [2024-09-25 10:54:02,792 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2024-09-25 10:54:02,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:54:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 321 transitions. [2024-09-25 10:54:02,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-25 10:54:02,796 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:54:02,796 INFO L216 NwaCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:54:02,814 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-25 10:54:02,996 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-25 10:54:02,997 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:54:02,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:54:02,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2038270089, now seen corresponding path program 2 times [2024-09-25 10:54:02,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:54:02,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637058816] [2024-09-25 10:54:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:54:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:54:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:54:03,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434773577] [2024-09-25 10:54:03,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:54:03,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:54:03,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:54:03,022 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:54:03,022 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-25 10:54:03,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:54:03,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:54:03,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-25 10:54:03,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:54:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 84 proven. 56 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-09-25 10:54:03,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:54:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 86 proven. 7 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-09-25 10:54:03,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:54:03,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637058816] [2024-09-25 10:54:03,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:54:03,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434773577] [2024-09-25 10:54:03,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434773577] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:54:03,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:54:03,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 25 [2024-09-25 10:54:03,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801799062] [2024-09-25 10:54:03,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:54:03,974 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-25 10:54:03,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:54:03,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-25 10:54:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-09-25 10:54:03,975 INFO L87 Difference]: Start difference. First operand 227 states and 321 transitions. Second operand has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-25 10:54:05,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:54:05,803 INFO L93 Difference]: Finished difference Result 243 states and 335 transitions. [2024-09-25 10:54:05,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-25 10:54:05,804 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) Word has length 142 [2024-09-25 10:54:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:54:05,806 INFO L225 Difference]: With dead ends: 243 [2024-09-25 10:54:05,806 INFO L226 Difference]: Without dead ends: 230 [2024-09-25 10:54:05,807 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 10:54:05,808 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 68 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-25 10:54:05,808 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 447 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-25 10:54:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-09-25 10:54:05,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2024-09-25 10:54:05,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 118 states have (on average 1.11864406779661) internal successors, (132), 119 states have internal predecessors, (132), 93 states have call successors, (93), 18 states have call predecessors, (93), 17 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2024-09-25 10:54:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 316 transitions. [2024-09-25 10:54:05,908 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 316 transitions. Word has length 142 [2024-09-25 10:54:05,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:54:05,909 INFO L474 AbstractCegarLoop]: Abstraction has 229 states and 316 transitions. [2024-09-25 10:54:05,909 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-25 10:54:05,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:54:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 316 transitions. [2024-09-25 10:54:05,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-09-25 10:54:05,910 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:54:05,911 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:54:05,928 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-25 10:54:06,111 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-25 10:54:06,111 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:54:06,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:54:06,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1721913771, now seen corresponding path program 3 times [2024-09-25 10:54:06,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:54:06,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827945333] [2024-09-25 10:54:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:54:06,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:54:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:54:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:54:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:54:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:54:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:54:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:54:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:54:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:54:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:54:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:54:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:54:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:54:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:54:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:54:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:54:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:54:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:54:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:54:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:54:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:54:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:54:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:54:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:54:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:54:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-25 10:54:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 54 proven. 51 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-09-25 10:54:06,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:54:06,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827945333] [2024-09-25 10:54:06,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827945333] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:54:06,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527475727] [2024-09-25 10:54:06,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:54:06,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:54:06,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:54:06,475 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:54:06,476 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-25 10:54:06,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-25 10:54:06,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:54:06,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-25 10:54:06,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:54:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 121 proven. 62 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2024-09-25 10:54:07,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:54:08,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527475727] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:54:08,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:54:08,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 21 [2024-09-25 10:54:08,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094416133] [2024-09-25 10:54:08,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:54:08,269 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 10:54:08,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:54:08,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 10:54:08,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2024-09-25 10:54:08,269 INFO L87 Difference]: Start difference. First operand 229 states and 316 transitions. Second operand has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2024-09-25 10:54:09,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:54:09,470 INFO L93 Difference]: Finished difference Result 339 states and 470 transitions. [2024-09-25 10:54:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-25 10:54:09,470 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) Word has length 145 [2024-09-25 10:54:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:54:09,476 INFO L225 Difference]: With dead ends: 339 [2024-09-25 10:54:09,477 INFO L226 Difference]: Without dead ends: 274 [2024-09-25 10:54:09,477 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=266, Invalid=1540, Unknown=0, NotChecked=0, Total=1806 [2024-09-25 10:54:09,478 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 44 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-25 10:54:09,478 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 551 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-25 10:54:09,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-09-25 10:54:09,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 259. [2024-09-25 10:54:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 133 states have (on average 1.112781954887218) internal successors, (148), 134 states have internal predecessors, (148), 105 states have call successors, (105), 21 states have call predecessors, (105), 20 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2024-09-25 10:54:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 356 transitions. [2024-09-25 10:54:09,604 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 356 transitions. Word has length 145 [2024-09-25 10:54:09,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:54:09,605 INFO L474 AbstractCegarLoop]: Abstraction has 259 states and 356 transitions. [2024-09-25 10:54:09,605 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2024-09-25 10:54:09,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:54:09,605 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 356 transitions. [2024-09-25 10:54:09,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-25 10:54:09,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:54:09,607 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:54:09,624 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-25 10:54:09,810 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:54:09,811 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:54:09,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:54:09,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1362351366, now seen corresponding path program 3 times [2024-09-25 10:54:09,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:54:09,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997142640] [2024-09-25 10:54:09,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:54:09,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:54:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:54:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:54:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:54:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:54:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:54:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:54:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:54:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:54:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:54:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:54:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:54:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-25 10:54:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-25 10:54:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-25 10:54:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-25 10:54:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-25 10:54:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-25 10:54:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-25 10:54:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-25 10:54:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-25 10:54:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-25 10:54:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-25 10:54:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-25 10:54:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-25 10:54:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-25 10:54:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-25 10:54:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-25 10:54:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 102 proven. 24 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2024-09-25 10:54:10,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:54:10,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997142640] [2024-09-25 10:54:10,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997142640] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:54:10,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423322488] [2024-09-25 10:54:10,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:54:10,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:54:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:54:10,216 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:54:10,217 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-25 10:54:10,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-25 10:54:10,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:54:10,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-25 10:54:10,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:54:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 95 proven. 43 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-09-25 10:54:10,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:54:15,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423322488] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:54:15,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:54:15,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 22 [2024-09-25 10:54:15,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712747743] [2024-09-25 10:54:15,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:54:15,820 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 10:54:15,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:54:15,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 10:54:15,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=701, Unknown=1, NotChecked=0, Total=812 [2024-09-25 10:54:15,821 INFO L87 Difference]: Start difference. First operand 259 states and 356 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2024-09-25 10:54:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:54:16,457 INFO L93 Difference]: Finished difference Result 311 states and 415 transitions. [2024-09-25 10:54:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 10:54:16,458 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) Word has length 156 [2024-09-25 10:54:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:54:16,460 INFO L225 Difference]: With dead ends: 311 [2024-09-25 10:54:16,460 INFO L226 Difference]: Without dead ends: 173 [2024-09-25 10:54:16,461 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=214, Invalid=1045, Unknown=1, NotChecked=0, Total=1260 [2024-09-25 10:54:16,461 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 45 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 10:54:16,462 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 513 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 10:54:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-25 10:54:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-09-25 10:54:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 92 states have (on average 1.0978260869565217) internal successors, (101), 93 states have internal predecessors, (101), 65 states have call successors, (65), 16 states have call predecessors, (65), 15 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-09-25 10:54:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2024-09-25 10:54:16,567 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 156 [2024-09-25 10:54:16,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:54:16,568 INFO L474 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2024-09-25 10:54:16,568 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2024-09-25 10:54:16,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:54:16,568 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2024-09-25 10:54:16,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-25 10:54:16,570 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:54:16,570 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:54:16,586 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-25 10:54:16,770 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:54:16,771 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:54:16,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:54:16,771 INFO L85 PathProgramCache]: Analyzing trace with hash -593551816, now seen corresponding path program 4 times [2024-09-25 10:54:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:54:16,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313354443] [2024-09-25 10:54:16,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:54:16,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:54:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:16,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:54:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:16,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:54:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:16,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 10:54:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 10:54:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-25 10:54:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-25 10:54:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 10:54:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 10:54:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 10:54:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 10:54:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 10:54:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-25 10:54:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-25 10:54:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-25 10:54:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-25 10:54:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-25 10:54:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-25 10:54:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-25 10:54:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 10:54:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-25 10:54:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-25 10:54:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-25 10:54:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-25 10:54:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-25 10:54:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-25 10:54:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-25 10:54:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-25 10:54:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-25 10:54:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-25 10:54:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:54:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-09-25 10:54:17,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:54:17,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313354443] [2024-09-25 10:54:17,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313354443] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:54:17,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836364058] [2024-09-25 10:54:17,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:54:17,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:54:17,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:54:17,069 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:54:17,079 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-25 10:54:17,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:54:17,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:54:17,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-25 10:54:17,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:54:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 234 proven. 68 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2024-09-25 10:54:17,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:54:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-09-25 10:54:17,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836364058] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:54:17,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 10:54:17,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2024-09-25 10:54:17,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454440694] [2024-09-25 10:54:17,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 10:54:17,473 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 10:54:17,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:54:17,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 10:54:17,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-09-25 10:54:17,474 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2024-09-25 10:54:17,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:54:17,740 INFO L93 Difference]: Finished difference Result 177 states and 232 transitions. [2024-09-25 10:54:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 10:54:17,741 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) Word has length 170 [2024-09-25 10:54:17,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:54:17,742 INFO L225 Difference]: With dead ends: 177 [2024-09-25 10:54:17,742 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 10:54:17,743 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 389 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-09-25 10:54:17,744 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 22 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:54:17,744 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 541 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:54:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 10:54:17,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 10:54:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-25 10:54:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 10:54:17,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2024-09-25 10:54:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:54:17,745 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 10:54:17,745 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2024-09-25 10:54:17,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:54:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 10:54:17,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 10:54:17,748 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 10:54:17,766 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-25 10:54:17,949 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:54:17,952 INFO L408 BasicCegarLoop]: Path program histogram: [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:54:17,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 10:54:22,405 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 10:54:22,429 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:54:22,429 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:54:22,430 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:54:22,430 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:54:22,430 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:54:22,430 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:54:22,430 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:54:22,430 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:54:22,431 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:54:22,431 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:54:22,431 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:54:22,431 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:54:22,431 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:54:22,431 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:54:22,431 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:54:22,431 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:54:22,432 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:54:22,432 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 10:54:22,432 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:54:22,432 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 10:54:22,432 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:54:22,433 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 10:54:22,433 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:54:22,433 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 10:54:22,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:54:22 BoogieIcfgContainer [2024-09-25 10:54:22,433 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 10:54:22,434 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 10:54:22,434 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 10:54:22,434 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 10:54:22,435 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:53:27" (3/4) ... [2024-09-25 10:54:22,437 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 10:54:22,495 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 10:54:22,495 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 10:54:22,496 INFO L158 Benchmark]: Toolchain (without parser) took 55513.37ms. Allocated memory was 86.0MB in the beginning and 264.2MB in the end (delta: 178.3MB). Free memory was 56.3MB in the beginning and 156.3MB in the end (delta: -100.0MB). Peak memory consumption was 77.7MB. Max. memory is 16.1GB. [2024-09-25 10:54:22,497 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:54:22,497 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.58ms. Allocated memory is still 86.0MB. Free memory was 56.0MB in the beginning and 65.6MB in the end (delta: -9.5MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-09-25 10:54:22,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.77ms. Allocated memory is still 86.0MB. Free memory was 65.2MB in the beginning and 64.3MB in the end (delta: 894.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 10:54:22,498 INFO L158 Benchmark]: Boogie Preprocessor took 51.74ms. Allocated memory is still 86.0MB. Free memory was 64.3MB in the beginning and 62.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:54:22,498 INFO L158 Benchmark]: RCFGBuilder took 407.81ms. Allocated memory is still 86.0MB. Free memory was 62.6MB in the beginning and 48.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-25 10:54:22,498 INFO L158 Benchmark]: TraceAbstraction took 54693.39ms. Allocated memory was 86.0MB in the beginning and 264.2MB in the end (delta: 178.3MB). Free memory was 47.9MB in the beginning and 158.4MB in the end (delta: -110.5MB). Peak memory consumption was 120.2MB. Max. memory is 16.1GB. [2024-09-25 10:54:22,499 INFO L158 Benchmark]: Witness Printer took 60.88ms. Allocated memory is still 264.2MB. Free memory was 158.4MB in the beginning and 156.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 10:54:22,500 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.58ms. Allocated memory is still 86.0MB. Free memory was 56.0MB in the beginning and 65.6MB in the end (delta: -9.5MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.77ms. Allocated memory is still 86.0MB. Free memory was 65.2MB in the beginning and 64.3MB in the end (delta: 894.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.74ms. Allocated memory is still 86.0MB. Free memory was 64.3MB in the beginning and 62.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 407.81ms. Allocated memory is still 86.0MB. Free memory was 62.6MB in the beginning and 48.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 54693.39ms. Allocated memory was 86.0MB in the beginning and 264.2MB in the end (delta: 178.3MB). Free memory was 47.9MB in the beginning and 158.4MB in the end (delta: -110.5MB). Peak memory consumption was 120.2MB. Max. memory is 16.1GB. * Witness Printer took 60.88ms. Allocated memory is still 264.2MB. Free memory was 158.4MB in the beginning and 156.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.1s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 676 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 581 mSDsluCounter, 6250 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5346 mSDsCounter, 702 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4957 IncrementalHoareTripleChecker+Invalid, 5659 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 702 mSolverCounterUnsat, 904 mSDtfsCounter, 4957 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3482 GetRequests, 3081 SyntacticMatches, 31 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=18, InterpolantAutomatonStates: 258, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 118 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 31.1s InterpolantComputationTime, 3647 NumberOfCodeBlocks, 3463 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3806 ConstructedInterpolants, 0 QuantifiedInterpolants, 13359 SizeOfPredicates, 52 NumberOfNonLiveVariables, 3793 ConjunctsInSsa, 460 ConjunctsInUnsatCore, 37 InterpolantComputations, 5 PerfectInterpolantSequences, 13865/14731 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: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((((r == 0) && (s == 1)) && (a == ((__int128) c + b))) && (0 <= c)) && (b == y)) && (k == 1)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (x <= 2)) && (p == 1)) || ((((((((((((((r == 0) && (a == (c + ((__int128) b * k)))) && (s == 1)) && (1 <= a)) && (0 <= c)) && (yy == ((long long) y * y))) && ((c + ((__int128) b * 2)) <= 2)) && (q == 0)) && (1 <= b)) && (xy == ((long long) y * x))) && (a == x)) && (x == (c + ((__int128) k * y)))) && (x <= 2)) && (p == 1))) || ((((((((((((((r == 0) && (y <= 2)) && (k == 0)) && (s == 1)) && (1 <= a)) && (b == y)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (c == x)) && (x <= 2)) && (p == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (k == 0)) && (2 == xy)) && (r == 1)) && (c == 2)) && (x == 1)) && (yy == 4)) && (a == 2)) && (q == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (2 == xy)) && (r == 1)) && (x == 1)) && (yy == 4)) && (k == 1)) && (a == 2)) && (q == 1)) && (c == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (2 == xy)) && (r == 1)) && (x == 1)) && (yy == 4)) && (k == 2)) && (a == 2)) && (c == 0)) && (q == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((b == 1) && (s == 0)) && (p == 0)) && (y == xy)) && (r == 1)) && (a == y)) && (x == 1)) && (yy == ((long long) y * y))) && (a == 2)) && (q == 1)) || (((((((((1 <= x) && (y <= 2)) && (b == 0)) && (p == 0)) && (r == 1)) && (a == y)) && (1 <= y)) && ((((__int128) q * x) + ((__int128) y * s)) == 0)) && (x <= 2))) || ((((((((((((r == 0) && (y <= 2)) && (s == 1)) && (1 <= a)) && (b == y)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (x <= 2)) && (p == 1))) || (((((((((((long long) x + 1) <= y) && (r == 0)) && (((__int128) ((long long) x * 2) + b) == y)) && (y <= 2)) && (s == 1)) && (((__int128) q + 2) == 0)) && (((__int128) b + 1) <= x)) && (a == x)) && (p == 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-25 10:54:22,534 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE