./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.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/ps4-ll_valuebound1.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 9c6f057d93c74db928b7d0b0915eda2af89e3a19cf93af1e21b1cfa684bd6cf4 --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 11:20:13,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 11:20:13,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 11:20:13,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 11:20:13,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 11:20:13,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 11:20:13,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 11:20:13,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 11:20:13,891 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 11:20:13,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 11:20:13,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 11:20:13,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 11:20:13,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 11:20:13,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 11:20:13,894 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 11:20:13,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 11:20:13,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 11:20:13,895 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 11:20:13,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 11:20:13,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 11:20:13,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 11:20:13,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 11:20:13,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 11:20:13,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 11:20:13,901 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 11:20:13,901 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 11:20:13,901 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 11:20:13,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 11:20:13,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 11:20:13,902 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 11:20:13,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 11:20:13,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 11:20:13,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:20:13,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 11:20:13,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 11:20:13,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 11:20:13,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 11:20:13,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 11:20:13,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 11:20:13,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 11:20:13,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 11:20:13,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 11:20:13,907 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 -> 9c6f057d93c74db928b7d0b0915eda2af89e3a19cf93af1e21b1cfa684bd6cf4 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 11:20:14,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 11:20:14,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 11:20:14,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 11:20:14,280 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 11:20:14,280 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 11:20:14,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c [2024-09-25 11:20:15,881 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 11:20:16,083 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 11:20:16,084 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c [2024-09-25 11:20:16,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/09b823898/717711ef12bc45448275d2e87cdef5c7/FLAGb82ad2db4 [2024-09-25 11:20:16,114 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/09b823898/717711ef12bc45448275d2e87cdef5c7 [2024-09-25 11:20:16,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 11:20:16,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 11:20:16,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 11:20:16,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 11:20:16,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 11:20:16,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d327f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16, skipping insertion in model container [2024-09-25 11:20:16,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,150 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 11:20:16,312 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/ps4-ll_valuebound1.c[458,471] [2024-09-25 11:20:16,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:20:16,344 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 11:20:16,359 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/ps4-ll_valuebound1.c[458,471] [2024-09-25 11:20:16,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:20:16,385 INFO L204 MainTranslator]: Completed translation [2024-09-25 11:20:16,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16 WrapperNode [2024-09-25 11:20:16,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 11:20:16,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 11:20:16,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 11:20:16,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 11:20:16,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,406 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 11:20:16,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 11:20:16,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 11:20:16,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 11:20:16,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 11:20:16,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,419 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,434 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 11:20:16,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 11:20:16,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 11:20:16,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 11:20:16,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 11:20:16,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (1/1) ... [2024-09-25 11:20:16,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:20:16,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:20:16,492 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 11:20:16,495 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 11:20:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 11:20:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 11:20:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 11:20:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 11:20:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 11:20:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 11:20:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 11:20:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 11:20:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 11:20:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 11:20:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 11:20:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 11:20:16,612 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 11:20:16,614 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 11:20:16,752 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 11:20:16,755 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 11:20:16,780 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 11:20:16,781 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 11:20:16,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:16 BoogieIcfgContainer [2024-09-25 11:20:16,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 11:20:16,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 11:20:16,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 11:20:16,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 11:20:16,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:20:16" (1/3) ... [2024-09-25 11:20:16,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edb302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:16, skipping insertion in model container [2024-09-25 11:20:16,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:16" (2/3) ... [2024-09-25 11:20:16,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edb302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:16, skipping insertion in model container [2024-09-25 11:20:16,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:16" (3/3) ... [2024-09-25 11:20:16,793 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound1.c [2024-09-25 11:20:16,815 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 11:20:16,815 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 11:20:16,875 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 11:20:16,883 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;@2b424605, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 11:20:16,884 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 11:20:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 11:20:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-25 11:20:16,896 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:20:16,896 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:20:16,897 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:20:16,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:20:16,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1238311395, now seen corresponding path program 1 times [2024-09-25 11:20:16,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:20:16,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919157595] [2024-09-25 11:20:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:20:16,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:20:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:17,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:20:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:17,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:20:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 11:20:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:20:17,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919157595] [2024-09-25 11:20:17,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919157595] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:20:17,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:20:17,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 11:20:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438792808] [2024-09-25 11:20:17,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:20:17,088 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 11:20:17,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:20:17,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 11:20:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 11:20:17,112 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 11:20:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:20:17,139 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-09-25 11:20:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 11:20:17,141 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-25 11:20:17,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:20:17,147 INFO L225 Difference]: With dead ends: 44 [2024-09-25 11:20:17,148 INFO L226 Difference]: Without dead ends: 22 [2024-09-25 11:20:17,151 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 11:20:17,155 INFO L434 NwaCegarLoop]: 26 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, 26 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 11:20:17,156 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:20:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-25 11:20:17,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-25 11:20:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 11:20:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-09-25 11:20:17,192 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2024-09-25 11:20:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:20:17,193 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-09-25 11:20:17,193 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 11:20:17,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:20:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-09-25 11:20:17,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-25 11:20:17,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:20:17,195 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:20:17,196 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 11:20:17,196 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:20:17,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:20:17,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1910922015, now seen corresponding path program 1 times [2024-09-25 11:20:17,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:20:17,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854553097] [2024-09-25 11:20:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:20:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:20:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:20:17,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422123132] [2024-09-25 11:20:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:20:17,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:20:17,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:20:17,229 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 11:20:17,231 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 11:20:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:17,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 11:20:17,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:20:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 11:20:17,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 11:20:17,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:20:17,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854553097] [2024-09-25 11:20:17,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:20:17,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422123132] [2024-09-25 11:20:17,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422123132] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:20:17,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:20:17,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:20:17,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386012176] [2024-09-25 11:20:17,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:20:17,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:20:17,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:20:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:20:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:20:17,417 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 11:20:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:20:17,484 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-09-25 11:20:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:20:17,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-25 11:20:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:20:17,486 INFO L225 Difference]: With dead ends: 33 [2024-09-25 11:20:17,487 INFO L226 Difference]: Without dead ends: 29 [2024-09-25 11:20:17,487 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 11:20:17,488 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:20:17,489 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:20:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-25 11:20:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-25 11:20:17,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 11:20:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-09-25 11:20:17,504 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16 [2024-09-25 11:20:17,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:20:17,504 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-09-25 11:20:17,504 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 11:20:17,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:20:17,505 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-09-25 11:20:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-25 11:20:17,506 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:20:17,506 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:20:17,521 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 11:20:17,707 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 11:20:17,707 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:20:17,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:20:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash 306700420, now seen corresponding path program 1 times [2024-09-25 11:20:17,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:20:17,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982185166] [2024-09-25 11:20:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:20:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:20:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:20:17,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853564429] [2024-09-25 11:20:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:20:17,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:20:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:20:17,751 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 11:20:17,757 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 11:20:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:17,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-25 11:20:17,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:20:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 11:20:17,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:20:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 11:20:17,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:20:17,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982185166] [2024-09-25 11:20:17,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:20:17,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853564429] [2024-09-25 11:20:17,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853564429] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 11:20:17,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:20:17,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-25 11:20:17,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951793288] [2024-09-25 11:20:17,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:20:17,995 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:20:17,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:20:17,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:20:17,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-25 11:20:17,996 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 11:20:18,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:20:18,059 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-09-25 11:20:18,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:20:18,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-25 11:20:18,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:20:18,061 INFO L225 Difference]: With dead ends: 35 [2024-09-25 11:20:18,061 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 11:20:18,061 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-25 11:20:18,063 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:20:18,063 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:20:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 11:20:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-25 11:20:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 11:20:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2024-09-25 11:20:18,072 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2024-09-25 11:20:18,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:20:18,073 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2024-09-25 11:20:18,073 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 11:20:18,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:20:18,074 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2024-09-25 11:20:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-25 11:20:18,075 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:20:18,075 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:20:18,088 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 11:20:18,277 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 11:20:18,278 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:20:18,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:20:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash 749725687, now seen corresponding path program 1 times [2024-09-25 11:20:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:20:18,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680561443] [2024-09-25 11:20:18,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:20:18,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:20:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:20:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033878348] [2024-09-25 11:20:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:20:18,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:20:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:20:18,327 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 11:20:18,339 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 11:20:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:18,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 11:20:18,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:20:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 11:20:18,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:20:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 11:20:18,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:20:18,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680561443] [2024-09-25 11:20:18,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:20:18,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033878348] [2024-09-25 11:20:18,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033878348] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:20:18,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:20:18,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-25 11:20:18,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761871353] [2024-09-25 11:20:18,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:20:18,638 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 11:20:18,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:20:18,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 11:20:18,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-25 11:20:18,640 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-25 11:20:18,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:20:18,754 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-09-25 11:20:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 11:20:18,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2024-09-25 11:20:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:20:18,756 INFO L225 Difference]: With dead ends: 45 [2024-09-25 11:20:18,756 INFO L226 Difference]: Without dead ends: 39 [2024-09-25 11:20:18,756 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-25 11:20:18,757 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:20:18,757 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:20:18,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-25 11:20:18,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-25 11:20:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 11:20:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-09-25 11:20:18,772 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2024-09-25 11:20:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:20:18,775 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-09-25 11:20:18,775 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-25 11:20:18,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:20:18,779 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-09-25 11:20:18,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-25 11:20:18,780 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:20:18,780 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:20:18,799 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 11:20:18,981 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 11:20:18,981 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:20:18,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:20:18,982 INFO L85 PathProgramCache]: Analyzing trace with hash 608187154, now seen corresponding path program 2 times [2024-09-25 11:20:18,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:20:18,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55264740] [2024-09-25 11:20:18,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:20:18,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:20:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:19,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:20:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:19,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:20:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:19,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-25 11:20:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:19,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-25 11:20:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:19,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-25 11:20:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:19,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 11:20:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:19,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-25 11:20:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:20:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 11:20:19,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:20:19,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55264740] [2024-09-25 11:20:19,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55264740] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:20:19,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192693007] [2024-09-25 11:20:19,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:20:19,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:20:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:20:19,473 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 11:20:19,474 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 11:20:19,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:20:19,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:20:19,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 11:20:19,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:20:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-25 11:20:19,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 11:20:19,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192693007] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:20:19,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:20:19,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 13 [2024-09-25 11:20:19,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974617500] [2024-09-25 11:20:19,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:20:19,707 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-25 11:20:19,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:20:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-25 11:20:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-09-25 11:20:19,709 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-09-25 11:20:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:20:19,752 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2024-09-25 11:20:19,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 11:20:19,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 50 [2024-09-25 11:20:19,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:20:19,754 INFO L225 Difference]: With dead ends: 43 [2024-09-25 11:20:19,754 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 11:20:19,755 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-09-25 11:20:19,757 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:20:19,760 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:20:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 11:20:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 11:20:19,761 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 11:20:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 11:20:19,762 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2024-09-25 11:20:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:20:19,762 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 11:20:19,762 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2024-09-25 11:20:19,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:20:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 11:20:19,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 11:20:19,765 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 11:20:19,787 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 11:20:19,970 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 11:20:19,972 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-25 11:20:19,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 11:20:20,133 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 11:20:20,152 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:20:20,153 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:20:20,155 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:20:20,155 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:20:20,155 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:20:20,156 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:20:20,156 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:20:20,156 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:20:20,157 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:20:20,158 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:20:20,159 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:20:20,159 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:20:20,159 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:20:20,159 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:20:20,159 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:20:20,159 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:20:20,161 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:20:20,162 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:20:20,163 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:20:20,163 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:20:20,163 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:20:20,172 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:20:20,173 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:20:20,173 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:20:20,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:20:20 BoogieIcfgContainer [2024-09-25 11:20:20,173 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 11:20:20,174 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 11:20:20,174 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 11:20:20,174 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 11:20:20,174 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:16" (3/4) ... [2024-09-25 11:20:20,177 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 11:20:20,229 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 11:20:20,229 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 11:20:20,230 INFO L158 Benchmark]: Toolchain (without parser) took 4109.71ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 52.3MB in the beginning and 64.5MB in the end (delta: -12.2MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2024-09-25 11:20:20,230 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:20:20,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.31ms. Allocated memory is still 73.4MB. Free memory was 52.0MB in the beginning and 40.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 11:20:20,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.84ms. Allocated memory is still 73.4MB. Free memory was 40.5MB in the beginning and 39.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:20:20,231 INFO L158 Benchmark]: Boogie Preprocessor took 45.99ms. Allocated memory is still 73.4MB. Free memory was 39.3MB in the beginning and 37.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:20:20,234 INFO L158 Benchmark]: RCFGBuilder took 328.21ms. Allocated memory is still 73.4MB. Free memory was 37.7MB in the beginning and 25.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 11:20:20,234 INFO L158 Benchmark]: TraceAbstraction took 3388.09ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 25.1MB in the beginning and 66.6MB in the end (delta: -41.5MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2024-09-25 11:20:20,234 INFO L158 Benchmark]: Witness Printer took 55.65ms. Allocated memory is still 88.1MB. Free memory was 66.6MB in the beginning and 64.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:20:20,236 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.31ms. Allocated memory is still 73.4MB. Free memory was 52.0MB in the beginning and 40.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.84ms. Allocated memory is still 73.4MB. Free memory was 40.5MB in the beginning and 39.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.99ms. Allocated memory is still 73.4MB. Free memory was 39.3MB in the beginning and 37.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 328.21ms. Allocated memory is still 73.4MB. Free memory was 37.7MB in the beginning and 25.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3388.09ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 25.1MB in the beginning and 66.6MB in the end (delta: -41.5MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Witness Printer took 55.65ms. Allocated memory is still 88.1MB. Free memory was 66.6MB in the beginning and 64.5MB 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: 12]: 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, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 342 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 240 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 102 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 164 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 753 SizeOfPredicates, 4 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 173/190 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: 27]: Loop Invariant Derived loop invariant: (((((y == 1) && (x == 1)) && (k == 1)) && (c == 1)) || (((((x == 0) && (0 <= k)) && (k <= 1)) && (c == 0)) && (y == 0))) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 9]: 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 11:20:20,261 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