./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.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/prodbin-ll_valuebound5.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 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a --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 00:00:18,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:00:18,623 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:00:18,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:00:18,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:00:18,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:00:18,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:00:18,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:00:18,652 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:00:18,652 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:00:18,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:00:18,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:00:18,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:00:18,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:00:18,654 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:00:18,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:00:18,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:00:18,655 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:00:18,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:00:18,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:00:18,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:00:18,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:00:18,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:00:18,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:00:18,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:00:18,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:00:18,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:00:18,660 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:00:18,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:00:18,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:00:18,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:00:18,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:00:18,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:00:18,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:00:18,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:00:18,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:00:18,661 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:00:18,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:00:18,662 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:00:18,662 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:00:18,662 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:00:18,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:00:18,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:00:18,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:00:18,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:00:18,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:00:18,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:00:18,923 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:00:18,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2024-09-25 00:00:20,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:00:20,555 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:00:20,555 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2024-09-25 00:00:20,564 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/2e0d2ed8c/2ba6cd2792ab4dffbe4b8f38305c5c71/FLAGbd4cfed1c [2024-09-25 00:00:20,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/2e0d2ed8c/2ba6cd2792ab4dffbe4b8f38305c5c71 [2024-09-25 00:00:20,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:00:20,947 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:00:20,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:00:20,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:00:20,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:00:20,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:00:20" (1/1) ... [2024-09-25 00:00:20,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ec70e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:20, skipping insertion in model container [2024-09-25 00:00:20,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:00:20" (1/1) ... [2024-09-25 00:00:20,977 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:00:21,122 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/prodbin-ll_valuebound5.c[537,550] [2024-09-25 00:00:21,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:00:21,153 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:00:21,183 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/prodbin-ll_valuebound5.c[537,550] [2024-09-25 00:00:21,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:00:21,207 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:00:21,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21 WrapperNode [2024-09-25 00:00:21,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:00:21,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:00:21,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:00:21,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:00:21,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,232 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:00:21,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:00:21,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:00:21,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:00:21,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:00:21,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,272 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 00:00:21,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:00:21,291 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:00:21,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:00:21,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:00:21,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (1/1) ... [2024-09-25 00:00:21,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:00:21,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:21,335 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 00:00:21,339 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 00:00:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:00:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 00:00:21,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 00:00:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:00:21,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:00:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:00:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:00:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:00:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:00:21,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:00:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 00:00:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 00:00:21,445 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:00:21,447 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:00:21,620 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 00:00:21,621 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:00:21,661 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:00:21,662 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 00:00:21,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:00:21 BoogieIcfgContainer [2024-09-25 00:00:21,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:00:21,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:00:21,666 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:00:21,669 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:00:21,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:00:20" (1/3) ... [2024-09-25 00:00:21,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ec8f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:00:21, skipping insertion in model container [2024-09-25 00:00:21,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:21" (2/3) ... [2024-09-25 00:00:21,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ec8f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:00:21, skipping insertion in model container [2024-09-25 00:00:21,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:00:21" (3/3) ... [2024-09-25 00:00:21,675 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound5.c [2024-09-25 00:00:21,693 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:00:21,694 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:00:21,750 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:00:21,758 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;@62ffdd00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:00:21,758 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:00:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 00:00:21,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 00:00:21,775 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:21,776 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:21,776 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:21,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2062108722, now seen corresponding path program 1 times [2024-09-25 00:00:21,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:21,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450641000] [2024-09-25 00:00:21,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:21,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:21,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:00:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:21,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:00:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:21,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 00:00:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:21,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:00:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 00:00:21,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:21,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450641000] [2024-09-25 00:00:21,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450641000] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:00:21,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:00:21,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 00:00:21,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866592875] [2024-09-25 00:00:21,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:00:21,983 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 00:00:21,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:22,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 00:00:22,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 00:00:22,018 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 00:00:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:22,055 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2024-09-25 00:00:22,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 00:00:22,058 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-25 00:00:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:22,066 INFO L225 Difference]: With dead ends: 54 [2024-09-25 00:00:22,066 INFO L226 Difference]: Without dead ends: 26 [2024-09-25 00:00:22,070 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 00:00:22,076 INFO L434 NwaCegarLoop]: 32 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, 32 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 00:00:22,077 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:00:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-25 00:00:22,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-25 00:00:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 00:00:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-09-25 00:00:22,120 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 27 [2024-09-25 00:00:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:22,120 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-09-25 00:00:22,121 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 00:00:22,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-09-25 00:00:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 00:00:22,123 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:22,123 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:22,124 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:00:22,124 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:22,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1085938704, now seen corresponding path program 1 times [2024-09-25 00:00:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:22,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470938027] [2024-09-25 00:00:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:22,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:22,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309528787] [2024-09-25 00:00:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:22,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:22,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:22,222 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 00:00:22,227 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 00:00:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:22,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 00:00:22,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:00:22,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 00:00:22,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:22,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470938027] [2024-09-25 00:00:22,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:22,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309528787] [2024-09-25 00:00:22,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309528787] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 00:00:22,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 00:00:22,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-09-25 00:00:22,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483231446] [2024-09-25 00:00:22,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:00:22,729 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:00:22,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:22,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:00:22,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-25 00:00:22,731 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-25 00:00:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:22,882 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-09-25 00:00:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:00:22,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-25 00:00:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:22,884 INFO L225 Difference]: With dead ends: 37 [2024-09-25 00:00:22,884 INFO L226 Difference]: Without dead ends: 35 [2024-09-25 00:00:22,885 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:00:22,887 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:22,888 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:22,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-25 00:00:22,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-09-25 00:00:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:00:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-25 00:00:22,901 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 27 [2024-09-25 00:00:22,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:22,903 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-25 00:00:22,903 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-25 00:00:22,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:22,903 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-25 00:00:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-25 00:00:22,904 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:22,905 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:22,923 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 00:00:23,108 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 00:00:23,109 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:23,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:23,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1368497365, now seen corresponding path program 1 times [2024-09-25 00:00:23,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:23,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819069025] [2024-09-25 00:00:23,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:23,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:23,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:00:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:23,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:00:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:23,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 00:00:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:23,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:00:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:23,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:00:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:00:23,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:23,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819069025] [2024-09-25 00:00:23,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819069025] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:00:23,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:00:23,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-25 00:00:23,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573370501] [2024-09-25 00:00:23,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:00:23,378 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-25 00:00:23,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:23,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-25 00:00:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-25 00:00:23,380 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 00:00:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:23,470 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-09-25 00:00:23,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 00:00:23,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-25 00:00:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:23,472 INFO L225 Difference]: With dead ends: 42 [2024-09-25 00:00:23,472 INFO L226 Difference]: Without dead ends: 35 [2024-09-25 00:00:23,472 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-25 00:00:23,474 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:23,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-25 00:00:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-09-25 00:00:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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 00:00:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-25 00:00:23,483 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2024-09-25 00:00:23,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:23,484 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-25 00:00:23,484 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 00:00:23,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:23,485 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-25 00:00:23,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-25 00:00:23,486 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:23,486 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:23,487 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-25 00:00:23,487 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:23,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash -65395240, now seen corresponding path program 1 times [2024-09-25 00:00:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:23,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657173279] [2024-09-25 00:00:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:23,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194087610] [2024-09-25 00:00:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:23,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:23,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:23,545 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 00:00:23,552 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 00:00:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:23,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 00:00:23,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:23,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 00:00:23,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 00:00:26,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:26,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657173279] [2024-09-25 00:00:26,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:26,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194087610] [2024-09-25 00:00:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194087610] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 00:00:26,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 00:00:26,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-09-25 00:00:26,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361877318] [2024-09-25 00:00:26,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:00:26,436 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 00:00:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 00:00:26,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:00:26,441 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 00:00:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:26,578 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-09-25 00:00:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 00:00:26,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-09-25 00:00:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:26,580 INFO L225 Difference]: With dead ends: 45 [2024-09-25 00:00:26,580 INFO L226 Difference]: Without dead ends: 43 [2024-09-25 00:00:26,580 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-25 00:00:26,581 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:26,581 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:26,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-25 00:00:26,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-09-25 00:00:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 00:00:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-09-25 00:00:26,597 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2024-09-25 00:00:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:26,598 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-09-25 00:00:26,598 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 00:00:26,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-09-25 00:00:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-25 00:00:26,600 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:26,600 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:26,617 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 00:00:26,801 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:26,802 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:26,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:26,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1709612122, now seen corresponding path program 1 times [2024-09-25 00:00:26,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:26,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152537834] [2024-09-25 00:00:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:26,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706618510] [2024-09-25 00:00:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:26,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:26,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:26,828 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 00:00:26,830 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 00:00:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:26,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-25 00:00:26,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:00:27,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:00:27,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152537834] [2024-09-25 00:00:27,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706618510] [2024-09-25 00:00:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706618510] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:27,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:00:27,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2024-09-25 00:00:27,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312109440] [2024-09-25 00:00:27,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:27,820 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 00:00:27,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 00:00:27,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-25 00:00:27,821 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-25 00:00:28,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:28,381 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-09-25 00:00:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 00:00:28,382 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 36 [2024-09-25 00:00:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:28,384 INFO L225 Difference]: With dead ends: 67 [2024-09-25 00:00:28,384 INFO L226 Difference]: Without dead ends: 60 [2024-09-25 00:00:28,384 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2024-09-25 00:00:28,385 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:28,385 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 161 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:00:28,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-25 00:00:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-25 00:00:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 00:00:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-09-25 00:00:28,408 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 36 [2024-09-25 00:00:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:28,408 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-09-25 00:00:28,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-25 00:00:28,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:28,409 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-09-25 00:00:28,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-25 00:00:28,410 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:28,410 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:28,426 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 00:00:28,610 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:28,611 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:28,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:28,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1894068381, now seen corresponding path program 1 times [2024-09-25 00:00:28,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:28,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35919625] [2024-09-25 00:00:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:28,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:28,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803519728] [2024-09-25 00:00:28,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:28,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:28,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:28,631 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 00:00:28,633 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 00:00:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:28,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:00:28,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:00:28,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:00:28,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:28,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35919625] [2024-09-25 00:00:28,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:28,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803519728] [2024-09-25 00:00:28,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803519728] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:28,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:00:28,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-09-25 00:00:28,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617089497] [2024-09-25 00:00:28,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:28,894 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 00:00:28,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:28,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 00:00:28,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-25 00:00:28,895 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-25 00:00:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:28,976 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-25 00:00:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 00:00:28,976 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 42 [2024-09-25 00:00:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:28,978 INFO L225 Difference]: With dead ends: 67 [2024-09-25 00:00:28,978 INFO L226 Difference]: Without dead ends: 60 [2024-09-25 00:00:28,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:00:28,979 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:28,981 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:28,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-25 00:00:28,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-09-25 00:00:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 00:00:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-09-25 00:00:28,994 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 42 [2024-09-25 00:00:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:28,995 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-09-25 00:00:28,995 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-25 00:00:28,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-09-25 00:00:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-25 00:00:28,996 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:28,996 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 00:00:29,011 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 00:00:29,196 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:29,197 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:29,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash -455011438, now seen corresponding path program 1 times [2024-09-25 00:00:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:29,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263045628] [2024-09-25 00:00:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:29,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:29,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304185010] [2024-09-25 00:00:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:29,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:29,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:29,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:00:29,227 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 00:00:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:29,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-25 00:00:29,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-25 00:00:29,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-25 00:00:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263045628] [2024-09-25 00:00:39,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304185010] [2024-09-25 00:00:39,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304185010] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:39,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:00:39,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 19 [2024-09-25 00:00:39,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427391391] [2024-09-25 00:00:39,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:39,088 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-25 00:00:39,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-25 00:00:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-09-25 00:00:39,092 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-25 00:00:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:47,110 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2024-09-25 00:00:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 00:00:47,110 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 45 [2024-09-25 00:00:47,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:47,111 INFO L225 Difference]: With dead ends: 90 [2024-09-25 00:00:47,112 INFO L226 Difference]: Without dead ends: 88 [2024-09-25 00:00:47,112 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-09-25 00:00:47,112 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:47,113 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 188 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-09-25 00:00:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-25 00:00:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2024-09-25 00:00:47,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.14) internal successors, (57), 52 states have internal predecessors, (57), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 00:00:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2024-09-25 00:00:47,129 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 45 [2024-09-25 00:00:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:47,129 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2024-09-25 00:00:47,129 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-25 00:00:47,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2024-09-25 00:00:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-25 00:00:47,132 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:47,132 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:47,148 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 00:00:47,333 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-25 00:00:47,334 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:47,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:47,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1692331952, now seen corresponding path program 2 times [2024-09-25 00:00:47,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:47,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127143097] [2024-09-25 00:00:47,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:47,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:47,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:00:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:47,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:00:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:47,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 00:00:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:47,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:00:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:47,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:00:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:47,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 00:00:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:47,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 00:00:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:47,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 00:00:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-25 00:00:47,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:47,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127143097] [2024-09-25 00:00:47,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127143097] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:00:47,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944526700] [2024-09-25 00:00:47,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:00:47,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:47,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:47,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:00:47,882 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 00:00:47,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:00:47,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:00:47,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 00:00:47,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-25 00:00:48,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-25 00:00:48,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944526700] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:48,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:00:48,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 19 [2024-09-25 00:00:48,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368634724] [2024-09-25 00:00:48,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:48,213 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-25 00:00:48,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:48,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-25 00:00:48,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-25 00:00:48,214 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 16 states have internal predecessors, (48), 10 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2024-09-25 00:00:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:48,450 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2024-09-25 00:00:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 00:00:48,450 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 16 states have internal predecessors, (48), 10 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 63 [2024-09-25 00:00:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:48,451 INFO L225 Difference]: With dead ends: 115 [2024-09-25 00:00:48,451 INFO L226 Difference]: Without dead ends: 50 [2024-09-25 00:00:48,452 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2024-09-25 00:00:48,452 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:48,452 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 247 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-25 00:00:48,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-25 00:00:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 00:00:48,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-09-25 00:00:48,463 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 63 [2024-09-25 00:00:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:48,463 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-09-25 00:00:48,463 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 16 states have internal predecessors, (48), 10 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2024-09-25 00:00:48,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-09-25 00:00:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-25 00:00:48,464 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:48,464 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:48,478 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-25 00:00:48,668 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:48,668 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:48,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash 499200656, now seen corresponding path program 2 times [2024-09-25 00:00:48,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:48,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284565721] [2024-09-25 00:00:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:48,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:48,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:00:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:48,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:00:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:48,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 00:00:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:48,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:00:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:49,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:00:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:49,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-25 00:00:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:49,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-25 00:00:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:49,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-25 00:00:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 41 proven. 11 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-25 00:00:49,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:49,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284565721] [2024-09-25 00:00:49,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284565721] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:00:49,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194728301] [2024-09-25 00:00:49,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:00:49,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:49,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:49,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:00:49,023 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 00:00:49,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:00:49,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:00:49,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 00:00:49,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 56 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-09-25 00:00:49,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:50,094 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-25 00:00:50,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194728301] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:50,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:00:50,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 25 [2024-09-25 00:00:50,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252909083] [2024-09-25 00:00:50,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:50,095 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-25 00:00:50,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:50,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-25 00:00:50,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2024-09-25 00:00:50,096 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 25 states, 24 states have (on average 2.625) internal successors, (63), 21 states have internal predecessors, (63), 15 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (19), 16 states have call predecessors, (19), 15 states have call successors, (19) [2024-09-25 00:00:50,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:50,257 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2024-09-25 00:00:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 00:00:50,258 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.625) internal successors, (63), 21 states have internal predecessors, (63), 15 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (19), 16 states have call predecessors, (19), 15 states have call successors, (19) Word has length 63 [2024-09-25 00:00:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:50,258 INFO L225 Difference]: With dead ends: 54 [2024-09-25 00:00:50,258 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 00:00:50,259 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2024-09-25 00:00:50,259 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:50,259 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 237 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 00:00:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 00:00:50,260 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 00:00:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 00:00:50,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2024-09-25 00:00:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:50,260 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 00:00:50,260 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.625) internal successors, (63), 21 states have internal predecessors, (63), 15 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (19), 16 states have call predecessors, (19), 15 states have call successors, (19) [2024-09-25 00:00:50,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 00:00:50,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 00:00:50,264 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 00:00:50,274 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 00:00:50,464 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:50,467 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-09-25 00:00:50,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 00:00:52,001 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 00:00:52,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:00:52 BoogieIcfgContainer [2024-09-25 00:00:52,019 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 00:00:52,019 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 00:00:52,019 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 00:00:52,020 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 00:00:52,020 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:00:21" (3/4) ... [2024-09-25 00:00:52,021 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 00:00:52,072 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 00:00:52,072 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 00:00:52,073 INFO L158 Benchmark]: Toolchain (without parser) took 31126.31ms. Allocated memory was 180.4MB in the beginning and 228.6MB in the end (delta: 48.2MB). Free memory was 110.5MB in the beginning and 154.4MB in the end (delta: -43.9MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2024-09-25 00:00:52,073 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:00:52,073 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.59ms. Allocated memory is still 180.4MB. Free memory was 110.2MB in the beginning and 152.4MB in the end (delta: -42.2MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2024-09-25 00:00:52,074 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.56ms. Allocated memory is still 180.4MB. Free memory was 152.4MB in the beginning and 151.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:00:52,074 INFO L158 Benchmark]: Boogie Preprocessor took 57.16ms. Allocated memory is still 180.4MB. Free memory was 151.0MB in the beginning and 149.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:00:52,074 INFO L158 Benchmark]: RCFGBuilder took 372.01ms. Allocated memory is still 180.4MB. Free memory was 149.6MB in the beginning and 136.4MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 00:00:52,074 INFO L158 Benchmark]: TraceAbstraction took 30353.89ms. Allocated memory was 180.4MB in the beginning and 228.6MB in the end (delta: 48.2MB). Free memory was 135.7MB in the beginning and 157.6MB in the end (delta: -21.9MB). Peak memory consumption was 114.3MB. Max. memory is 16.1GB. [2024-09-25 00:00:52,075 INFO L158 Benchmark]: Witness Printer took 53.16ms. Allocated memory is still 228.6MB. Free memory was 157.6MB in the beginning and 154.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-25 00:00:52,077 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.59ms. Allocated memory is still 180.4MB. Free memory was 110.2MB in the beginning and 152.4MB in the end (delta: -42.2MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.56ms. Allocated memory is still 180.4MB. Free memory was 152.4MB in the beginning and 151.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.16ms. Allocated memory is still 180.4MB. Free memory was 151.0MB in the beginning and 149.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 372.01ms. Allocated memory is still 180.4MB. Free memory was 149.6MB in the beginning and 136.4MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 30353.89ms. Allocated memory was 180.4MB in the beginning and 228.6MB in the end (delta: 48.2MB). Free memory was 135.7MB in the beginning and 157.6MB in the end (delta: -21.9MB). Peak memory consumption was 114.3MB. Max. memory is 16.1GB. * Witness Printer took 53.16ms. Allocated memory is still 228.6MB. Free memory was 157.6MB in the beginning and 154.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. 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: 15]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.7s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 1272 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1065 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 999 IncrementalHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 207 mSDtfsCounter, 999 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 734 GetRequests, 579 SyntacticMatches, 18 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=7, InterpolantAutomatonStates: 91, 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, 9 MinimizatonAttempts, 24 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 684 NumberOfCodeBlocks, 684 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 792 ConstructedInterpolants, 1 QuantifiedInterpolants, 4429 SizeOfPredicates, 12 NumberOfNonLiveVariables, 769 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 646/710 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: 34]: Loop Invariant Derived loop invariant: ((((((((((((z + ((__int128) y * x)) == ((long long) b * a)) && (b <= 5)) && (((long long) a * 2) == x)) && (0 <= a)) && (1 <= b)) && (a <= 5)) && ((((long long) -1 + b) / 2) == y)) || ((((((z == ((long long) b * a)) && (b <= 5)) && (0 <= a)) && (1 <= b)) && (y == 0)) && (a <= 5))) || (((((((z == 0) && (b == y)) && (0 <= a)) && (1 <= y)) && (a <= 5)) && (a == x)) && (y <= 5))) || ((((((y == 1) && (b <= 5)) && (((__int128) z + x) == ((long long) b * a))) && (0 <= a)) && (1 <= b)) && (a <= 5))) || ((((((((z == 0) && (y == (b / 2))) && (b <= 5)) && (((long long) a * 2) == x)) && (0 <= a)) && ((b % 2) != 1)) && (1 <= y)) && (a <= 5))) - ProcedureContractResult [Line: 9]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 12]: 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 00:00:52,116 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