./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.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 7cdbf1a1c8f20bea42ab4ad35fbada62352deeb8460cfeb3778e870071fb234e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 18:37:19,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 18:37:19,216 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 18:37:19,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 18:37:19,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 18:37:19,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 18:37:19,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 18:37:19,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 18:37:19,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 18:37:19,257 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 18:37:19,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 18:37:19,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 18:37:19,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 18:37:19,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 18:37:19,259 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 18:37:19,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 18:37:19,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 18:37:19,260 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 18:37:19,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 18:37:19,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 18:37:19,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 18:37:19,264 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 18:37:19,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 18:37:19,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 18:37:19,264 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 18:37:19,265 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 18:37:19,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 18:37:19,265 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 18:37:19,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 18:37:19,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 18:37:19,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 18:37:19,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 18:37:19,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:37:19,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 18:37:19,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 18:37:19,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 18:37:19,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 18:37:19,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 18:37:19,268 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 18:37:19,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 18:37:19,269 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 18:37:19,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 18:37:19,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cdbf1a1c8f20bea42ab4ad35fbada62352deeb8460cfeb3778e870071fb234e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 18:37:19,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 18:37:19,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 18:37:19,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 18:37:19,552 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 18:37:19,552 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 18:37:19,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c [2024-09-17 18:37:21,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 18:37:21,214 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 18:37:21,215 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c [2024-09-17 18:37:21,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/6d46bd95c/939d88ea64c24d1fad234fd76f981742/FLAGf2d860a1a [2024-09-17 18:37:21,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/6d46bd95c/939d88ea64c24d1fad234fd76f981742 [2024-09-17 18:37:21,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 18:37:21,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 18:37:21,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 18:37:21,264 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 18:37:21,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 18:37:21,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a5e2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21, skipping insertion in model container [2024-09-17 18:37:21,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,300 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 18:37:21,452 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/cohendiv-ll_unwindbound100.c[576,589] [2024-09-17 18:37:21,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:37:21,484 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 18:37:21,493 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/cohendiv-ll_unwindbound100.c[576,589] [2024-09-17 18:37:21,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:37:21,516 INFO L204 MainTranslator]: Completed translation [2024-09-17 18:37:21,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21 WrapperNode [2024-09-17 18:37:21,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 18:37:21,517 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 18:37:21,517 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 18:37:21,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 18:37:21,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,539 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 18:37:21,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 18:37:21,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 18:37:21,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 18:37:21,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 18:37:21,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,553 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,568 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]. [2024-09-17 18:37:21,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,571 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,574 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,578 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 18:37:21,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 18:37:21,579 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 18:37:21,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 18:37:21,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (1/1) ... [2024-09-17 18:37:21,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:37:21,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:21,617 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) [2024-09-17 18:37:21,620 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 [2024-09-17 18:37:21,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 18:37:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 18:37:21,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 18:37:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 18:37:21,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 18:37:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 18:37:21,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 18:37:21,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 18:37:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 18:37:21,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 18:37:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 18:37:21,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 18:37:21,733 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 18:37:21,735 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 18:37:21,921 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-17 18:37:21,921 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 18:37:21,952 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 18:37:21,952 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-17 18:37:21,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:37:21 BoogieIcfgContainer [2024-09-17 18:37:21,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 18:37:21,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 18:37:21,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 18:37:21,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 18:37:21,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 06:37:21" (1/3) ... [2024-09-17 18:37:21,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5565d6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:37:21, skipping insertion in model container [2024-09-17 18:37:21,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:37:21" (2/3) ... [2024-09-17 18:37:21,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5565d6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:37:21, skipping insertion in model container [2024-09-17 18:37:21,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:37:21" (3/3) ... [2024-09-17 18:37:21,963 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound100.c [2024-09-17 18:37:21,980 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 18:37:21,980 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 18:37:22,025 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 18:37:22,031 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;@3c3e9b17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 18:37:22,031 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 18:37:22,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 18:37:22,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-17 18:37:22,043 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:22,043 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:22,044 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:22,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash -166019731, now seen corresponding path program 1 times [2024-09-17 18:37:22,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:22,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796858170] [2024-09-17 18:37:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:22,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:37:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:22,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:37:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:37:22,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:22,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796858170] [2024-09-17 18:37:22,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796858170] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:37:22,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:37:22,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-17 18:37:22,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315550347] [2024-09-17 18:37:22,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:22,250 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 18:37:22,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:22,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 18:37:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 18:37:22,274 INFO L87 Difference]: Start difference. First operand has 36 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 18:37:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:22,384 INFO L93 Difference]: Finished difference Result 65 states and 98 transitions. [2024-09-17 18:37:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 18:37:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-17 18:37:22,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:22,394 INFO L225 Difference]: With dead ends: 65 [2024-09-17 18:37:22,394 INFO L226 Difference]: Without dead ends: 33 [2024-09-17 18:37:22,398 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 18:37:22,403 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:22,405 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 46 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:37:22,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-17 18:37:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2024-09-17 18:37:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 18:37:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2024-09-17 18:37:22,449 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 16 [2024-09-17 18:37:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:22,450 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2024-09-17 18:37:22,451 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 18:37:22,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:22,452 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2024-09-17 18:37:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-17 18:37:22,453 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:22,453 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:22,454 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 18:37:22,454 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:22,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1899526296, now seen corresponding path program 1 times [2024-09-17 18:37:22,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:22,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951011243] [2024-09-17 18:37:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:22,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:22,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:37:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:22,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:37:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:37:22,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:22,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951011243] [2024-09-17 18:37:22,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951011243] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:37:22,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:37:22,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:37:22,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840991823] [2024-09-17 18:37:22,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:22,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:37:22,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:22,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:37:22,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:37:22,673 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 18:37:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:22,803 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-09-17 18:37:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 18:37:22,804 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), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-09-17 18:37:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:22,806 INFO L225 Difference]: With dead ends: 41 [2024-09-17 18:37:22,806 INFO L226 Difference]: Without dead ends: 34 [2024-09-17 18:37:22,806 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:37:22,807 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:22,808 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 77 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:37:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-17 18:37:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-17 18:37:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 18:37:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-09-17 18:37:22,819 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 17 [2024-09-17 18:37:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:22,819 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-09-17 18:37:22,819 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), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 18:37:22,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-09-17 18:37:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-17 18:37:22,821 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:22,821 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:22,821 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 18:37:22,822 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:22,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1901015846, now seen corresponding path program 1 times [2024-09-17 18:37:22,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:22,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945196539] [2024-09-17 18:37:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:22,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:37:22,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456839074] [2024-09-17 18:37:22,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:22,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:22,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:22,848 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) [2024-09-17 18:37:22,849 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 18:37:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:22,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:37:22,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:37:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:37:23,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:37:23,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945196539] [2024-09-17 18:37:23,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:37:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456839074] [2024-09-17 18:37:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456839074] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:37:23,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:37:23,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:37:23,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715834828] [2024-09-17 18:37:23,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:23,010 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:37:23,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:23,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:37:23,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:37:23,012 INFO L87 Difference]: Start difference. First operand 34 states and 43 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 18:37:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:23,090 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-17 18:37:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:37:23,091 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-09-17 18:37:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:23,092 INFO L225 Difference]: With dead ends: 44 [2024-09-17 18:37:23,092 INFO L226 Difference]: Without dead ends: 42 [2024-09-17 18:37:23,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:37:23,094 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:23,095 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:37:23,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-17 18:37:23,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2024-09-17 18:37:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-17 18:37:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2024-09-17 18:37:23,114 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 17 [2024-09-17 18:37:23,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:23,115 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2024-09-17 18:37:23,115 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 18:37:23,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2024-09-17 18:37:23,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-17 18:37:23,116 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:23,117 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:23,135 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 18:37:23,317 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:23,318 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:23,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1706287866, now seen corresponding path program 1 times [2024-09-17 18:37:23,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:23,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033370025] [2024-09-17 18:37:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:23,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:37:23,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178599287] [2024-09-17 18:37:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:23,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:23,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:23,346 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) [2024-09-17 18:37:23,347 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 18:37:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:23,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:37:23,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:37:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:37:23,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:37:23,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:23,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033370025] [2024-09-17 18:37:23,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:37:23,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178599287] [2024-09-17 18:37:23,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178599287] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:37:23,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:37:23,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:37:23,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067422574] [2024-09-17 18:37:23,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:23,471 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:37:23,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:23,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:37:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:37:23,472 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 18:37:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:23,577 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2024-09-17 18:37:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:37:23,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-17 18:37:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:23,579 INFO L225 Difference]: With dead ends: 57 [2024-09-17 18:37:23,579 INFO L226 Difference]: Without dead ends: 54 [2024-09-17 18:37:23,579 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:37:23,580 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:23,581 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 124 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:37:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-17 18:37:23,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-09-17 18:37:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-17 18:37:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-09-17 18:37:23,607 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 22 [2024-09-17 18:37:23,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:23,607 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-09-17 18:37:23,608 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 18:37:23,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:23,608 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-09-17 18:37:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-17 18:37:23,609 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:23,609 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:23,624 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-17 18:37:23,810 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 [2024-09-17 18:37:23,811 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:23,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1856957465, now seen corresponding path program 1 times [2024-09-17 18:37:23,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:23,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080436965] [2024-09-17 18:37:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:23,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:37:23,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113834604] [2024-09-17 18:37:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:23,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:23,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:23,845 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) [2024-09-17 18:37:23,848 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 18:37:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:23,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-17 18:37:23,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:37:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:37:23,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:37:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:23,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080436965] [2024-09-17 18:37:23,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:37:23,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113834604] [2024-09-17 18:37:23,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113834604] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:37:23,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:37:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:37:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600516825] [2024-09-17 18:37:23,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:23,931 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:37:23,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:23,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:37:23,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:37:23,932 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-09-17 18:37:24,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:24,019 INFO L93 Difference]: Finished difference Result 82 states and 112 transitions. [2024-09-17 18:37:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:37:24,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 30 [2024-09-17 18:37:24,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:24,024 INFO L225 Difference]: With dead ends: 82 [2024-09-17 18:37:24,024 INFO L226 Difference]: Without dead ends: 80 [2024-09-17 18:37:24,025 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:37:24,026 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:24,027 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 141 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:37:24,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-17 18:37:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2024-09-17 18:37:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 45 states have internal predecessors, (55), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-17 18:37:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2024-09-17 18:37:24,055 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 30 [2024-09-17 18:37:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:24,055 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2024-09-17 18:37:24,055 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-09-17 18:37:24,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2024-09-17 18:37:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-17 18:37:24,059 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:24,059 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:24,075 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 18:37:24,260 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 [2024-09-17 18:37:24,260 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:24,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:24,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1900127414, now seen corresponding path program 1 times [2024-09-17 18:37:24,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:24,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411685899] [2024-09-17 18:37:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:24,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:37:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:37:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-17 18:37:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 18:37:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:37:24,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:24,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411685899] [2024-09-17 18:37:24,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411685899] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:37:24,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:37:24,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-17 18:37:24,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603333946] [2024-09-17 18:37:24,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:24,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-17 18:37:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-17 18:37:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-17 18:37:24,481 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-17 18:37:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:24,614 INFO L93 Difference]: Finished difference Result 112 states and 152 transitions. [2024-09-17 18:37:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 18:37:24,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-09-17 18:37:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:24,619 INFO L225 Difference]: With dead ends: 112 [2024-09-17 18:37:24,619 INFO L226 Difference]: Without dead ends: 77 [2024-09-17 18:37:24,620 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-17 18:37:24,620 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:24,621 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 74 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:37:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-17 18:37:24,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-09-17 18:37:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 48 states have internal predecessors, (57), 23 states have call successors, (23), 8 states have call predecessors, (23), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-17 18:37:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2024-09-17 18:37:24,635 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 33 [2024-09-17 18:37:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:24,635 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2024-09-17 18:37:24,635 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-17 18:37:24,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2024-09-17 18:37:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-17 18:37:24,636 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:24,637 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:24,637 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-17 18:37:24,637 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:24,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2073680743, now seen corresponding path program 1 times [2024-09-17 18:37:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022701884] [2024-09-17 18:37:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:24,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:37:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:37:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-17 18:37:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 18:37:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-17 18:37:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-17 18:37:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:37:24,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:24,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022701884] [2024-09-17 18:37:24,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022701884] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:37:24,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:37:24,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-17 18:37:24,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205474579] [2024-09-17 18:37:24,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:24,844 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-17 18:37:24,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:24,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-17 18:37:24,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-09-17 18:37:24,845 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-17 18:37:25,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:25,041 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2024-09-17 18:37:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-17 18:37:25,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2024-09-17 18:37:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:25,043 INFO L225 Difference]: With dead ends: 83 [2024-09-17 18:37:25,046 INFO L226 Difference]: Without dead ends: 81 [2024-09-17 18:37:25,047 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-17 18:37:25,048 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:25,048 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 121 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:37:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-17 18:37:25,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-09-17 18:37:25,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 51 states have internal predecessors, (60), 23 states have call successors, (23), 9 states have call predecessors, (23), 8 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-17 18:37:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2024-09-17 18:37:25,075 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 40 [2024-09-17 18:37:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:25,076 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2024-09-17 18:37:25,076 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-17 18:37:25,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:25,078 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2024-09-17 18:37:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-17 18:37:25,079 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:25,079 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:25,080 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-17 18:37:25,082 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:25,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash -930915559, now seen corresponding path program 1 times [2024-09-17 18:37:25,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:25,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985920468] [2024-09-17 18:37:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:25,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:37:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:37:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-17 18:37:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 18:37:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-17 18:37:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-17 18:37:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-17 18:37:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-17 18:37:25,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:25,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985920468] [2024-09-17 18:37:25,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985920468] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:37:25,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454544615] [2024-09-17 18:37:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:25,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:25,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:25,297 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) [2024-09-17 18:37:25,298 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 18:37:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:37:25,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:37:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-17 18:37:25,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:37:25,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454544615] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:37:25,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 18:37:25,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-09-17 18:37:25,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280728747] [2024-09-17 18:37:25,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:25,469 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 18:37:25,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:25,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 18:37:25,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-09-17 18:37:25,470 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-17 18:37:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:25,569 INFO L93 Difference]: Finished difference Result 94 states and 120 transitions. [2024-09-17 18:37:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 18:37:25,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2024-09-17 18:37:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:25,571 INFO L225 Difference]: With dead ends: 94 [2024-09-17 18:37:25,571 INFO L226 Difference]: Without dead ends: 92 [2024-09-17 18:37:25,571 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-09-17 18:37:25,572 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:25,572 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 185 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:37:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-17 18:37:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2024-09-17 18:37:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 56 states have internal predecessors, (63), 25 states have call successors, (25), 10 states have call predecessors, (25), 9 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-17 18:37:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2024-09-17 18:37:25,592 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 46 [2024-09-17 18:37:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:25,593 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2024-09-17 18:37:25,594 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-17 18:37:25,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2024-09-17 18:37:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-17 18:37:25,595 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:25,595 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:25,612 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-17 18:37:25,799 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:25,799 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:25,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:25,800 INFO L85 PathProgramCache]: Analyzing trace with hash -872582608, now seen corresponding path program 1 times [2024-09-17 18:37:25,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:25,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969453881] [2024-09-17 18:37:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:25,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:37:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:37:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-17 18:37:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 18:37:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-17 18:37:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-17 18:37:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-17 18:37:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-17 18:37:25,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:25,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969453881] [2024-09-17 18:37:25,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969453881] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:37:25,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124319449] [2024-09-17 18:37:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:25,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:25,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:25,923 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) [2024-09-17 18:37:25,923 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 18:37:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:25,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 18:37:25,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:37:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-17 18:37:26,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:37:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-17 18:37:26,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124319449] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:37:26,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:37:26,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2024-09-17 18:37:26,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730063299] [2024-09-17 18:37:26,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:37:26,186 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 18:37:26,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:26,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 18:37:26,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:37:26,188 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 9 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-17 18:37:26,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:26,556 INFO L93 Difference]: Finished difference Result 254 states and 311 transitions. [2024-09-17 18:37:26,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-17 18:37:26,559 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 9 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) Word has length 49 [2024-09-17 18:37:26,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:26,562 INFO L225 Difference]: With dead ends: 254 [2024-09-17 18:37:26,562 INFO L226 Difference]: Without dead ends: 247 [2024-09-17 18:37:26,562 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-09-17 18:37:26,563 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 109 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:26,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 148 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:37:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-09-17 18:37:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 231. [2024-09-17 18:37:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 155 states have internal predecessors, (175), 58 states have call successors, (58), 27 states have call predecessors, (58), 26 states have return successors, (53), 48 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-17 18:37:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 286 transitions. [2024-09-17 18:37:26,622 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 286 transitions. Word has length 49 [2024-09-17 18:37:26,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:26,622 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 286 transitions. [2024-09-17 18:37:26,623 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 9 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-17 18:37:26,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 286 transitions. [2024-09-17 18:37:26,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-17 18:37:26,625 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:26,625 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:26,643 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-17 18:37:26,825 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:26,826 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:26,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash 260253794, now seen corresponding path program 1 times [2024-09-17 18:37:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:26,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101329390] [2024-09-17 18:37:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:37:26,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225947746] [2024-09-17 18:37:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:26,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:26,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:26,842 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) [2024-09-17 18:37:26,843 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 18:37:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:26,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-17 18:37:26,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:37:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:37:27,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:37:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:37:27,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101329390] [2024-09-17 18:37:27,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:37:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225947746] [2024-09-17 18:37:27,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225947746] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-17 18:37:27,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 18:37:27,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-09-17 18:37:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726377262] [2024-09-17 18:37:27,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:37:27,486 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-17 18:37:27,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:27,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-17 18:37:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-09-17 18:37:27,487 INFO L87 Difference]: Start difference. First operand 231 states and 286 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-17 18:37:27,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:27,662 INFO L93 Difference]: Finished difference Result 249 states and 303 transitions. [2024-09-17 18:37:27,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:37:27,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 54 [2024-09-17 18:37:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:27,667 INFO L225 Difference]: With dead ends: 249 [2024-09-17 18:37:27,668 INFO L226 Difference]: Without dead ends: 243 [2024-09-17 18:37:27,669 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-09-17 18:37:27,670 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:27,670 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 113 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:37:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-17 18:37:27,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 178. [2024-09-17 18:37:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 114 states have (on average 1.131578947368421) internal successors, (129), 119 states have internal predecessors, (129), 39 states have call successors, (39), 25 states have call predecessors, (39), 24 states have return successors, (38), 33 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-17 18:37:27,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 206 transitions. [2024-09-17 18:37:27,726 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 206 transitions. Word has length 54 [2024-09-17 18:37:27,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:27,726 INFO L474 AbstractCegarLoop]: Abstraction has 178 states and 206 transitions. [2024-09-17 18:37:27,726 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-17 18:37:27,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:27,727 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 206 transitions. [2024-09-17 18:37:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-17 18:37:27,729 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:37:27,729 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:27,747 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-17 18:37:27,929 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-17 18:37:27,930 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:37:27,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1070557628, now seen corresponding path program 1 times [2024-09-17 18:37:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:37:27,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226261604] [2024-09-17 18:37:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:37:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:37:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:37:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-17 18:37:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 18:37:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-17 18:37:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-17 18:37:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-17 18:37:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-17 18:37:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-17 18:37:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:37:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-17 18:37:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-09-17 18:37:28,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:37:28,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226261604] [2024-09-17 18:37:28,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226261604] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:37:28,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86923930] [2024-09-17 18:37:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:37:28,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:28,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:37:28,134 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) [2024-09-17 18:37:28,136 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 18:37:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:37:28,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 18:37:28,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:37:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-09-17 18:37:28,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:37:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-09-17 18:37:28,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86923930] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:37:28,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:37:28,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-09-17 18:37:28,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609448772] [2024-09-17 18:37:28,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:37:28,348 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-17 18:37:28,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:37:28,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-17 18:37:28,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-09-17 18:37:28,349 INFO L87 Difference]: Start difference. First operand 178 states and 206 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-17 18:37:28,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:37:28,566 INFO L93 Difference]: Finished difference Result 190 states and 215 transitions. [2024-09-17 18:37:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-17 18:37:28,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 70 [2024-09-17 18:37:28,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:37:28,568 INFO L225 Difference]: With dead ends: 190 [2024-09-17 18:37:28,568 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 18:37:28,569 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-09-17 18:37:28,571 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:37:28,571 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 116 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:37:28,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 18:37:28,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 18:37:28,572 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) [2024-09-17 18:37:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 18:37:28,573 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2024-09-17 18:37:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:37:28,573 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 18:37:28,573 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-17 18:37:28,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:37:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 18:37:28,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 18:37:28,576 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 18:37:28,593 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-17 18:37:28,780 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:37:28,784 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:37:28,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 18:37:30,687 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 18:37:30,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 06:37:30 BoogieIcfgContainer [2024-09-17 18:37:30,711 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 18:37:30,711 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-17 18:37:30,711 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-17 18:37:30,712 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-17 18:37:30,712 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:37:21" (3/4) ... [2024-09-17 18:37:30,715 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-17 18:37:30,773 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-17 18:37:30,774 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-17 18:37:30,775 INFO L158 Benchmark]: Toolchain (without parser) took 9513.48ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 114.1MB in the beginning and 129.1MB in the end (delta: -15.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2024-09-17 18:37:30,775 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:37:30,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.72ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 101.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-17 18:37:30,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.11ms. Allocated memory is still 142.6MB. Free memory was 101.8MB in the beginning and 100.9MB in the end (delta: 988.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 18:37:30,775 INFO L158 Benchmark]: Boogie Preprocessor took 36.96ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 99.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:37:30,776 INFO L158 Benchmark]: RCFGBuilder took 374.42ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 85.5MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-17 18:37:30,776 INFO L158 Benchmark]: TraceAbstraction took 8754.96ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 85.0MB in the beginning and 132.2MB in the end (delta: -47.2MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. [2024-09-17 18:37:30,776 INFO L158 Benchmark]: Witness Printer took 62.63ms. Allocated memory is still 180.4MB. Free memory was 132.2MB in the beginning and 129.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 18:37:30,778 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.72ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 101.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.11ms. Allocated memory is still 142.6MB. Free memory was 101.8MB in the beginning and 100.9MB in the end (delta: 988.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.96ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 99.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 374.42ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 85.5MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8754.96ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 85.0MB in the beginning and 132.2MB in the end (delta: -47.2MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. * Witness Printer took 62.63ms. Allocated memory is still 180.4MB. Free memory was 132.2MB in the beginning and 129.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.8s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 312 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 1280 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 949 mSDsCounter, 150 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 968 IncrementalHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 150 mSolverCounterUnsat, 331 mSDtfsCounter, 968 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 615 GetRequests, 510 SyntacticMatches, 3 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=9, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 98 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 682 NumberOfCodeBlocks, 682 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 715 ConstructedInterpolants, 0 QuantifiedInterpolants, 1741 SizeOfPredicates, 14 NumberOfNonLiveVariables, 817 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 905/967 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: 46]: Loop Invariant Derived loop invariant: (((((1 <= r) && (((((__int128) q * y) + r) + ((__int128) a * y)) == ((__int128) b + x))) && (\old(counter) == 0)) && (1 <= y)) && (b == ((__int128) a * y))) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((__int128) q * y) + r) + ((__int128) a * y)) == ((__int128) b + x)) && (\old(counter) == 0)) && (1 <= y)) && (b == ((__int128) a * y))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: (counter == 0) Ensures: ((\old(cond) != 0) && (counter == 0)) - ProcedureContractResult [Line: 23]: Procedure Contract for main Derived contract for procedure main. Requires: (counter == 0) Ensures: (\old(counter) == 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-17 18:37:30,798 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