./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps5-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 1c1067a232ccde2ed577e0679695f102973a28bf8615edad0a3c87e54d273eb4 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:02:04,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:02:04,624 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:02:04,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:02:04,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:02:04,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:02:04,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:02:04,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:02:04,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:02:04,655 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:02:04,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:02:04,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:02:04,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:02:04,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:02:04,657 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:02:04,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:02:04,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:02:04,659 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:02:04,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:02:04,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:02:04,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:02:04,660 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:02:04,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:02:04,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:02:04,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:02:04,661 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:02:04,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:02:04,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:02:04,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:02:04,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:02:04,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:02:04,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:02:04,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:02:04,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:02:04,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:02:04,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:02:04,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:02:04,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:02:04,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:02:04,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:02:04,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:02:04,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:02:04,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c1067a232ccde2ed577e0679695f102973a28bf8615edad0a3c87e54d273eb4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:02:04,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:02:04,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:02:04,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:02:04,895 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:02:04,896 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:02:04,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2024-09-25 00:02:06,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:02:06,543 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:02:06,543 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2024-09-25 00:02:06,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b87ce2f4d/c3bc1beea10547b5ab44bbaf065c34f3/FLAG8b2017521 [2024-09-25 00:02:06,566 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b87ce2f4d/c3bc1beea10547b5ab44bbaf065c34f3 [2024-09-25 00:02:06,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:02:06,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:02:06,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:02:06,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:02:06,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:02:06,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26cd8d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06, skipping insertion in model container [2024-09-25 00:02:06,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:02:06,751 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/ps5-ll_valuebound2.c[458,471] [2024-09-25 00:02:06,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:02:06,777 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:02:06,788 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/ps5-ll_valuebound2.c[458,471] [2024-09-25 00:02:06,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:02:06,821 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:02:06,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06 WrapperNode [2024-09-25 00:02:06,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:02:06,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:02:06,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:02:06,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:02:06,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,847 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:02:06,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:02:06,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:02:06,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:02:06,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:02:06,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,911 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-25 00:02:06,914 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:02:06,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:02:06,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:02:06,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:02:06,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (1/1) ... [2024-09-25 00:02:06,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:02:06,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:06,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-25 00:02:07,000 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-25 00:02:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:02:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 00:02:07,049 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 00:02:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:02:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:02:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:02:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:02:07,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:02:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:02:07,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:02:07,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 00:02:07,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 00:02:07,117 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:02:07,120 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:02:07,252 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 00:02:07,252 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:02:07,275 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:02:07,275 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 00:02:07,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:02:07 BoogieIcfgContainer [2024-09-25 00:02:07,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:02:07,277 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:02:07,277 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:02:07,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:02:07,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:02:06" (1/3) ... [2024-09-25 00:02:07,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c00cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:02:07, skipping insertion in model container [2024-09-25 00:02:07,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:06" (2/3) ... [2024-09-25 00:02:07,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c00cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:02:07, skipping insertion in model container [2024-09-25 00:02:07,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:02:07" (3/3) ... [2024-09-25 00:02:07,286 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound2.c [2024-09-25 00:02:07,310 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:02:07,310 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:02:07,358 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:02:07,365 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;@e799c55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:02:07,365 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:02:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 00:02:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-25 00:02:07,380 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:07,381 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:07,381 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:07,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:07,387 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-25 00:02:07,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:02:07,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165864703] [2024-09-25 00:02:07,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:07,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:02:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:07,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:02:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:07,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:02:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:07,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:02:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:02:07,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165864703] [2024-09-25 00:02:07,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165864703] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:02:07,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:02:07,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 00:02:07,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351450302] [2024-09-25 00:02:07,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:02:07,615 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 00:02:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:02:07,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 00:02:07,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 00:02:07,642 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:02:07,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:07,666 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-25 00:02:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 00:02:07,669 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-25 00:02:07,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:07,675 INFO L225 Difference]: With dead ends: 48 [2024-09-25 00:02:07,675 INFO L226 Difference]: Without dead ends: 23 [2024-09-25 00:02:07,678 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 00:02:07,681 INFO L434 NwaCegarLoop]: 28 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, 28 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 00:02:07,682 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:02:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-25 00:02:07,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-25 00:02:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 00:02:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-25 00:02:07,716 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-25 00:02:07,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:07,716 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-25 00:02:07,717 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:02:07,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:07,717 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-25 00:02:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-25 00:02:07,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:07,719 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:07,719 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:02:07,719 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:07,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-25 00:02:07,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:02:07,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428251067] [2024-09-25 00:02:07,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:07,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:02:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:02:07,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538026032] [2024-09-25 00:02:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:07,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:07,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:07,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:02:07,757 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:02:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:07,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 00:02:07,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:07,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:02:07,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 00:02:07,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:07,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428251067] [2024-09-25 00:02:07,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:02:07,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538026032] [2024-09-25 00:02:07,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538026032] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:02:07,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:02:07,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:02:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938495958] [2024-09-25 00:02:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:02:07,966 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:02:07,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:02:07,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:02:07,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:02:07,968 INFO L87 Difference]: Start difference. First operand 23 states and 26 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-25 00:02:08,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:08,021 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-25 00:02:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:02:08,021 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-25 00:02:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:08,022 INFO L225 Difference]: With dead ends: 34 [2024-09-25 00:02:08,022 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 00:02:08,023 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 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 00:02:08,024 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 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 00:02:08,025 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:02:08,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 00:02:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-25 00:02:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:02:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-25 00:02:08,037 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-25 00:02:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:08,038 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-25 00:02:08,038 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-25 00:02:08,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-25 00:02:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-25 00:02:08,041 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:08,043 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:08,060 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 00:02:08,247 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:08,248 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:08,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:08,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-25 00:02:08,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:02:08,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625411016] [2024-09-25 00:02:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:08,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:02:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:02:08,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581491177] [2024-09-25 00:02:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:08,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:08,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:08,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:02:08,287 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:02:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:08,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-25 00:02:08,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:02:08,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:02:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:02:08,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:08,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625411016] [2024-09-25 00:02:08,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:02:08,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581491177] [2024-09-25 00:02:08,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581491177] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 00:02:08,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 00:02:08,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-25 00:02:08,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496626772] [2024-09-25 00:02:08,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:02:08,539 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:02:08,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:02:08,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:02:08,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-25 00:02:08,540 INFO L87 Difference]: Start difference. First operand 30 states and 33 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 00:02:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:08,621 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-25 00:02:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:02:08,622 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-25 00:02:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:08,623 INFO L225 Difference]: With dead ends: 36 [2024-09-25 00:02:08,624 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 00:02:08,625 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 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 00:02:08,626 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:08,628 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:02:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 00:02:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-25 00:02:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:02:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-25 00:02:08,648 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-25 00:02:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:08,648 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-25 00:02:08,651 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 00:02:08,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-25 00:02:08,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-25 00:02:08,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:08,653 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:08,673 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 00:02:08,853 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:08,854 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:08,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:08,855 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-25 00:02:08,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:02:08,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282113313] [2024-09-25 00:02:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:08,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:02:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:02:08,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931936297] [2024-09-25 00:02:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:08,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:08,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:08,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:02:08,903 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:02:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:08,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 00:02:08,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-25 00:02:09,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:02:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-25 00:02:09,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:09,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282113313] [2024-09-25 00:02:09,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:02:09,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931936297] [2024-09-25 00:02:09,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931936297] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:02:09,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:02:09,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-25 00:02:09,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529247561] [2024-09-25 00:02:09,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:02:09,233 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 00:02:09,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:02:09,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 00:02:09,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-25 00:02:09,234 INFO L87 Difference]: Start difference. First operand 32 states and 34 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 00:02:09,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:09,364 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-09-25 00:02:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 00:02:09,365 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-25 00:02:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:09,367 INFO L225 Difference]: With dead ends: 49 [2024-09-25 00:02:09,368 INFO L226 Difference]: Without dead ends: 41 [2024-09-25 00:02:09,368 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 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 00:02:09,370 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:09,372 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 135 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:02:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-25 00:02:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-25 00:02:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 00:02:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-09-25 00:02:09,400 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 39 [2024-09-25 00:02:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:09,401 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-09-25 00:02:09,401 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 00:02:09,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-09-25 00:02:09,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-25 00:02:09,402 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:09,402 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:09,444 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 00:02:09,603 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:09,603 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:09,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-25 00:02:09,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:02:09,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108347859] [2024-09-25 00:02:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:09,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:02:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:09,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:02:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:09,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:02:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:10,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:02:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:10,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-25 00:02:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:10,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-25 00:02:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:10,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:02:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:10,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-25 00:02:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:10,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 00:02:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:10,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 00:02:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-25 00:02:10,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:10,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108347859] [2024-09-25 00:02:10,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108347859] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:02:10,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112170137] [2024-09-25 00:02:10,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:02:10,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:10,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:02:10,113 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:02:10,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:02:10,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:02:10,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:02:10,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-25 00:02:10,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:02:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-25 00:02:10,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112170137] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:02:10,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:02:10,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-09-25 00:02:10,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585650925] [2024-09-25 00:02:10,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:02:10,521 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-25 00:02:10,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:02:10,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-25 00:02:10,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-09-25 00:02:10,523 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) [2024-09-25 00:02:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:10,603 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2024-09-25 00:02:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 00:02:10,604 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) Word has length 60 [2024-09-25 00:02:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:10,605 INFO L225 Difference]: With dead ends: 47 [2024-09-25 00:02:10,605 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 00:02:10,606 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-25 00:02:10,607 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:10,607 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 115 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:02:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 00:02:10,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 00:02:10,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-25 00:02:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 00:02:10,608 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2024-09-25 00:02:10,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:10,608 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 00:02:10,609 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) [2024-09-25 00:02:10,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 00:02:10,609 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 00:02:10,612 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 00:02:10,630 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 00:02:10,813 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:10,817 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-25 00:02:10,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 00:02:11,802 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 00:02:11,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:02:11 BoogieIcfgContainer [2024-09-25 00:02:11,821 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 00:02:11,821 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 00:02:11,821 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 00:02:11,821 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 00:02:11,822 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:02:07" (3/4) ... [2024-09-25 00:02:11,824 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 00:02:11,874 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 00:02:11,874 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 00:02:11,875 INFO L158 Benchmark]: Toolchain (without parser) took 5305.46ms. Allocated memory is still 172.0MB. Free memory was 103.5MB in the beginning and 82.3MB in the end (delta: 21.2MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2024-09-25 00:02:11,875 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:02:11,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.33ms. Allocated memory is still 172.0MB. Free memory was 103.1MB in the beginning and 91.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 00:02:11,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.57ms. Allocated memory is still 172.0MB. Free memory was 91.5MB in the beginning and 90.6MB in the end (delta: 934.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:02:11,875 INFO L158 Benchmark]: Boogie Preprocessor took 82.36ms. Allocated memory is still 172.0MB. Free memory was 90.6MB in the beginning and 143.5MB in the end (delta: -52.9MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2024-09-25 00:02:11,876 INFO L158 Benchmark]: RCFGBuilder took 324.44ms. Allocated memory is still 172.0MB. Free memory was 143.5MB in the beginning and 130.6MB in the end (delta: 12.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 00:02:11,876 INFO L158 Benchmark]: TraceAbstraction took 4543.29ms. Allocated memory is still 172.0MB. Free memory was 129.9MB in the beginning and 84.4MB in the end (delta: 45.5MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2024-09-25 00:02:11,879 INFO L158 Benchmark]: Witness Printer took 53.19ms. Allocated memory is still 172.0MB. Free memory was 84.4MB in the beginning and 82.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:02:11,880 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.33ms. Allocated memory is still 172.0MB. Free memory was 103.1MB in the beginning and 91.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.57ms. Allocated memory is still 172.0MB. Free memory was 91.5MB in the beginning and 90.6MB in the end (delta: 934.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 82.36ms. Allocated memory is still 172.0MB. Free memory was 90.6MB in the beginning and 143.5MB in the end (delta: -52.9MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * RCFGBuilder took 324.44ms. Allocated memory is still 172.0MB. Free memory was 143.5MB in the beginning and 130.6MB in the end (delta: 12.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4543.29ms. Allocated memory is still 172.0MB. Free memory was 129.9MB in the beginning and 84.4MB in the end (delta: 45.5MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. * Witness Printer took 53.19ms. Allocated memory is still 172.0MB. Free memory was 84.4MB in the beginning and 82.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 428 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 313 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 170 IncrementalHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 115 mSDtfsCounter, 170 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 270 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 31, 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, 1.5s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 347 ConstructedInterpolants, 0 QuantifiedInterpolants, 1000 SizeOfPredicates, 4 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 366/392 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: 28]: Loop Invariant Derived loop invariant: ((((((0 <= k) && (((__int128) y * y) == ((__int128) k * y))) && ((c + ((__int128) c * y)) == (y + ((__int128) y * y)))) && (k <= 2)) && ((y + ((__int128) 30 * x)) == (((((((__int128) y * y) * y) * y) * 15) + (6 * (((((__int128) y * y) * y) * y) * y))) + ((((__int128) y * y) * y) * 10)))) || (((((1 <= k) && (y == 1)) && (k <= 2)) && (x == 1)) && (c == 1))) - 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 00:02:11,898 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