./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/egcd-ll.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 f1d7dc9d 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/egcd-ll.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 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 --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-f1d7dc9-m [2024-09-20 12:17:41,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 12:17:41,567 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 12:17:41,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 12:17:41,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 12:17:41,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 12:17:41,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 12:17:41,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 12:17:41,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 12:17:41,615 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 12:17:41,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 12:17:41,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 12:17:41,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 12:17:41,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 12:17:41,617 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 12:17:41,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 12:17:41,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 12:17:41,619 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 12:17:41,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 12:17:41,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 12:17:41,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 12:17:41,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 12:17:41,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 12:17:41,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 12:17:41,621 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 12:17:41,622 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 12:17:41,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 12:17:41,622 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 12:17:41,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 12:17:41,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 12:17:41,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 12:17:41,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 12:17:41,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:17:41,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 12:17:41,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 12:17:41,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 12:17:41,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 12:17:41,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 12:17:41,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 12:17:41,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 12:17:41,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 12:17:41,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 12:17:41,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 12:17:41,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 12:17:41,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 12:17:41,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 12:17:41,924 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 12:17:41,925 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 12:17:41,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/egcd-ll.c [2024-09-20 12:17:43,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 12:17:43,639 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 12:17:43,640 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/egcd-ll.c [2024-09-20 12:17:43,647 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/ad10bd47e/ab6020dccaf14beca8f7d1ff345497b0/FLAGdbb9ee1d1 [2024-09-20 12:17:44,029 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/ad10bd47e/ab6020dccaf14beca8f7d1ff345497b0 [2024-09-20 12:17:44,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 12:17:44,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 12:17:44,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 12:17:44,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 12:17:44,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 12:17:44,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7952c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44, skipping insertion in model container [2024-09-20 12:17:44,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,060 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 12:17:44,223 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/egcd-ll.c[489,502] [2024-09-20 12:17:44,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:17:44,268 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 12:17:44,282 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/egcd-ll.c[489,502] [2024-09-20 12:17:44,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:17:44,322 INFO L204 MainTranslator]: Completed translation [2024-09-20 12:17:44,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44 WrapperNode [2024-09-20 12:17:44,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 12:17:44,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 12:17:44,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 12:17:44,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 12:17:44,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,344 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 12:17:44,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 12:17:44,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 12:17:44,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 12:17:44,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 12:17:44,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,372 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]. [2024-09-20 12:17:44,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 12:17:44,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 12:17:44,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 12:17:44,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 12:17:44,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (1/1) ... [2024-09-20 12:17:44,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:17:44,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:17:44,422 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) [2024-09-20 12:17:44,425 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 [2024-09-20 12:17:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 12:17:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 12:17:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 12:17:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 12:17:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 12:17:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 12:17:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 12:17:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 12:17:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 12:17:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 12:17:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 12:17:44,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 12:17:44,522 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 12:17:44,524 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 12:17:44,695 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-20 12:17:44,696 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 12:17:44,719 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 12:17:44,719 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 12:17:44,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:17:44 BoogieIcfgContainer [2024-09-20 12:17:44,720 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 12:17:44,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 12:17:44,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 12:17:44,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 12:17:44,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:17:44" (1/3) ... [2024-09-20 12:17:44,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123ced9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:17:44, skipping insertion in model container [2024-09-20 12:17:44,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:17:44" (2/3) ... [2024-09-20 12:17:44,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123ced9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:17:44, skipping insertion in model container [2024-09-20 12:17:44,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:17:44" (3/3) ... [2024-09-20 12:17:44,749 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2024-09-20 12:17:44,769 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 12:17:44,770 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 12:17:44,848 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 12:17:44,854 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;@6b96ea7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 12:17:44,855 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 12:17:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 12:17:44,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 12:17:44,875 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:17:44,875 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:17:44,878 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:17:44,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:44,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1455345481, now seen corresponding path program 1 times [2024-09-20 12:17:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:17:44,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478992154] [2024-09-20 12:17:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:44,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:17:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:45,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:17:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:45,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:17:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:45,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 12:17:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:17:45,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:17:45,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478992154] [2024-09-20 12:17:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478992154] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:17:45,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:17:45,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 12:17:45,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294008914] [2024-09-20 12:17:45,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:17:45,096 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 12:17:45,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:17:45,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 12:17:45,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:17:45,121 INFO L87 Difference]: Start difference. First operand has 32 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 12:17:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:17:45,151 INFO L93 Difference]: Finished difference Result 58 states and 90 transitions. [2024-09-20 12:17:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 12:17:45,154 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-20 12:17:45,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:17:45,159 INFO L225 Difference]: With dead ends: 58 [2024-09-20 12:17:45,159 INFO L226 Difference]: Without dead ends: 28 [2024-09-20 12:17:45,162 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:17:45,165 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:17:45,166 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:17:45,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-20 12:17:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-20 12:17:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 12:17:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2024-09-20 12:17:45,197 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 21 [2024-09-20 12:17:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:17:45,197 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2024-09-20 12:17:45,197 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 12:17:45,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:45,198 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2024-09-20 12:17:45,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 12:17:45,199 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:17:45,199 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:17:45,200 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 12:17:45,200 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:17:45,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:45,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1125954897, now seen corresponding path program 1 times [2024-09-20 12:17:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:17:45,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184632220] [2024-09-20 12:17:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:45,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:17:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:17:45,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203041155] [2024-09-20 12:17:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:45,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:45,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:17:45,262 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) [2024-09-20 12:17:45,264 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 12:17:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:45,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 12:17:45,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:17:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:17:45,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:17:45,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:17:45,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184632220] [2024-09-20 12:17:45,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:17:45,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203041155] [2024-09-20 12:17:45,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203041155] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:17:45,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:17:45,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:17:45,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518421524] [2024-09-20 12:17:45,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:17:45,479 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:17:45,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:17:45,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:17:45,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:17:45,481 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-20 12:17:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:17:45,578 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2024-09-20 12:17:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:17:45,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-20 12:17:45,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:17:45,581 INFO L225 Difference]: With dead ends: 44 [2024-09-20 12:17:45,581 INFO L226 Difference]: Without dead ends: 42 [2024-09-20 12:17:45,582 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:17:45,583 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:17:45,585 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 109 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:17:45,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-20 12:17:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2024-09-20 12:17:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 12:17:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 56 transitions. [2024-09-20 12:17:45,607 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 56 transitions. Word has length 21 [2024-09-20 12:17:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:17:45,608 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 56 transitions. [2024-09-20 12:17:45,608 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-20 12:17:45,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:45,609 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions. [2024-09-20 12:17:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-20 12:17:45,611 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:17:45,611 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:17:45,631 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-20 12:17:45,816 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:45,817 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:17:45,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash -893829407, now seen corresponding path program 1 times [2024-09-20 12:17:45,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:17:45,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737387543] [2024-09-20 12:17:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:45,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:17:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:17:45,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931600502] [2024-09-20 12:17:45,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:45,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:45,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:17:45,853 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) [2024-09-20 12:17:45,854 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 12:17:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:45,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 12:17:45,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:17:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:17:46,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:17:46,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:17:46,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737387543] [2024-09-20 12:17:46,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:17:46,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931600502] [2024-09-20 12:17:46,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931600502] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:17:46,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:17:46,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:17:46,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999893910] [2024-09-20 12:17:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:17:46,006 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:17:46,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:17:46,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:17:46,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:17:46,008 INFO L87 Difference]: Start difference. First operand 41 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 12:17:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:17:46,091 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2024-09-20 12:17:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:17:46,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-20 12:17:46,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:17:46,094 INFO L225 Difference]: With dead ends: 48 [2024-09-20 12:17:46,094 INFO L226 Difference]: Without dead ends: 46 [2024-09-20 12:17:46,094 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:17:46,095 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:17:46,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:17:46,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-20 12:17:46,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-09-20 12:17:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 12:17:46,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2024-09-20 12:17:46,112 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 26 [2024-09-20 12:17:46,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:17:46,113 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2024-09-20 12:17:46,114 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 12:17:46,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:46,114 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2024-09-20 12:17:46,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-20 12:17:46,115 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:17:46,115 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:17:46,132 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 12:17:46,321 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:46,322 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:17:46,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1650542353, now seen corresponding path program 1 times [2024-09-20 12:17:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:17:46,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242046160] [2024-09-20 12:17:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:17:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:17:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030312668] [2024-09-20 12:17:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:46,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:17:46,363 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) [2024-09-20 12:17:46,365 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 12:17:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:46,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 12:17:46,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:17:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-20 12:17:46,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:17:46,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:17:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242046160] [2024-09-20 12:17:46,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:17:46,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030312668] [2024-09-20 12:17:46,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030312668] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:17:46,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:17:46,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:17:46,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115065870] [2024-09-20 12:17:46,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:17:46,514 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:17:46,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:17:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:17:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:17:46,515 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 12:17:46,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:17:46,589 INFO L93 Difference]: Finished difference Result 70 states and 99 transitions. [2024-09-20 12:17:46,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:17:46,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2024-09-20 12:17:46,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:17:46,595 INFO L225 Difference]: With dead ends: 70 [2024-09-20 12:17:46,596 INFO L226 Difference]: Without dead ends: 66 [2024-09-20 12:17:46,597 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:17:46,598 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:17:46,598 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 111 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:17:46,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-20 12:17:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-20 12:17:46,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 35 states have internal predecessors, (40), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:17:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2024-09-20 12:17:46,625 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 31 [2024-09-20 12:17:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:17:46,626 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2024-09-20 12:17:46,626 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 12:17:46,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:46,626 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2024-09-20 12:17:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-20 12:17:46,627 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:17:46,627 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:17:46,645 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 12:17:46,828 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:46,828 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:17:46,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:46,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1101528784, now seen corresponding path program 1 times [2024-09-20 12:17:46,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:17:46,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498153985] [2024-09-20 12:17:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:17:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:17:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:17:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 12:17:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:17:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:17:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 12:17:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-20 12:17:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:17:47,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498153985] [2024-09-20 12:17:47,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498153985] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:17:47,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:17:47,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:17:47,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301151430] [2024-09-20 12:17:47,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:17:47,113 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:17:47,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:17:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:17:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:17:47,114 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-20 12:17:47,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:17:47,162 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2024-09-20 12:17:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:17:47,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 37 [2024-09-20 12:17:47,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:17:47,165 INFO L225 Difference]: With dead ends: 72 [2024-09-20 12:17:47,165 INFO L226 Difference]: Without dead ends: 70 [2024-09-20 12:17:47,165 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:17:47,166 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:17:47,167 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 120 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:17:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-20 12:17:47,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-09-20 12:17:47,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 38 states have internal predecessors, (43), 28 states have call successors, (28), 8 states have call predecessors, (28), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:17:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 95 transitions. [2024-09-20 12:17:47,185 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 95 transitions. Word has length 37 [2024-09-20 12:17:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:17:47,185 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 95 transitions. [2024-09-20 12:17:47,185 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-20 12:17:47,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 95 transitions. [2024-09-20 12:17:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-20 12:17:47,191 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:17:47,191 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:17:47,191 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-20 12:17:47,191 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:17:47,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1622352051, now seen corresponding path program 1 times [2024-09-20 12:17:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:17:47,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912374892] [2024-09-20 12:17:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:17:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:17:47,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366154420] [2024-09-20 12:17:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:47,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:47,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:17:47,233 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) [2024-09-20 12:17:47,235 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 12:17:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 12:17:47,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:17:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-20 12:17:47,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:17:47,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:17:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912374892] [2024-09-20 12:17:47,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:17:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366154420] [2024-09-20 12:17:47,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366154420] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:17:47,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:17:47,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:17:47,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454520035] [2024-09-20 12:17:47,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:17:47,376 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:17:47,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:17:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:17:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:17:47,377 INFO L87 Difference]: Start difference. First operand 70 states and 95 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-20 12:17:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:17:47,431 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2024-09-20 12:17:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:17:47,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2024-09-20 12:17:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:17:47,433 INFO L225 Difference]: With dead ends: 80 [2024-09-20 12:17:47,433 INFO L226 Difference]: Without dead ends: 77 [2024-09-20 12:17:47,433 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:17:47,435 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:17:47,435 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 118 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:17:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-20 12:17:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2024-09-20 12:17:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 40 states have (on average 1.225) internal successors, (49), 43 states have internal predecessors, (49), 25 states have call successors, (25), 10 states have call predecessors, (25), 9 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 12:17:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2024-09-20 12:17:47,461 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 39 [2024-09-20 12:17:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:17:47,462 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2024-09-20 12:17:47,462 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-20 12:17:47,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2024-09-20 12:17:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-20 12:17:47,467 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:17:47,467 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:17:47,484 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 12:17:47,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:47,668 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:17:47,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:47,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1780329470, now seen corresponding path program 1 times [2024-09-20 12:17:47,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:17:47,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836986127] [2024-09-20 12:17:47,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:47,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:17:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:17:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:17:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 12:17:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:17:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:17:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 12:17:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:47,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 12:17:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-20 12:17:48,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:17:48,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836986127] [2024-09-20 12:17:48,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836986127] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:17:48,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104932306] [2024-09-20 12:17:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:48,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:48,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:17:48,003 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) [2024-09-20 12:17:48,005 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 12:17:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:48,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 12:17:48,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:17:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-20 12:17:48,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:17:48,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104932306] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:17:48,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 12:17:48,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-20 12:17:48,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299843465] [2024-09-20 12:17:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:17:48,171 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 12:17:48,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:17:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 12:17:48,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-20 12:17:48,172 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-20 12:17:48,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:17:48,268 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2024-09-20 12:17:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 12:17:48,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 42 [2024-09-20 12:17:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:17:48,270 INFO L225 Difference]: With dead ends: 88 [2024-09-20 12:17:48,270 INFO L226 Difference]: Without dead ends: 84 [2024-09-20 12:17:48,271 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-09-20 12:17:48,272 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:17:48,272 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:17:48,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-20 12:17:48,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2024-09-20 12:17:48,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.173913043478261) internal successors, (54), 49 states have internal predecessors, (54), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 12:17:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2024-09-20 12:17:48,317 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 42 [2024-09-20 12:17:48,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:17:48,317 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2024-09-20 12:17:48,318 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-20 12:17:48,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2024-09-20 12:17:48,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-20 12:17:48,321 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:17:48,321 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:17:48,339 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 12:17:48,521 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-20 12:17:48,522 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:17:48,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:48,523 INFO L85 PathProgramCache]: Analyzing trace with hash 826274405, now seen corresponding path program 2 times [2024-09-20 12:17:48,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:17:48,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603479462] [2024-09-20 12:17:48,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:48,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:17:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:17:48,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516293788] [2024-09-20 12:17:48,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:17:48,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:48,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:17:48,546 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) [2024-09-20 12:17:48,547 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 12:17:48,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:17:48,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:17:48,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-20 12:17:48,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:17:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-20 12:17:48,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:17:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-20 12:17:49,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:17:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603479462] [2024-09-20 12:17:49,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:17:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516293788] [2024-09-20 12:17:49,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516293788] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:17:49,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:17:49,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-09-20 12:17:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479128416] [2024-09-20 12:17:49,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:17:49,022 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 12:17:49,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:17:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 12:17:49,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-20 12:17:49,023 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-20 12:17:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:17:49,484 INFO L93 Difference]: Finished difference Result 107 states and 138 transitions. [2024-09-20 12:17:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 12:17:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 44 [2024-09-20 12:17:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:17:49,486 INFO L225 Difference]: With dead ends: 107 [2024-09-20 12:17:49,486 INFO L226 Difference]: Without dead ends: 92 [2024-09-20 12:17:49,487 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-09-20 12:17:49,487 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 12:17:49,487 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 214 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 12:17:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-20 12:17:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 75. [2024-09-20 12:17:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 45 states have internal predecessors, (50), 21 states have call successors, (21), 11 states have call predecessors, (21), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 12:17:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2024-09-20 12:17:49,521 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 44 [2024-09-20 12:17:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:17:49,521 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2024-09-20 12:17:49,521 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-20 12:17:49,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2024-09-20 12:17:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-20 12:17:49,525 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:17:49,525 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:17:49,541 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 12:17:49,725 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:49,726 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:17:49,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash 273068935, now seen corresponding path program 1 times [2024-09-20 12:17:49,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:17:49,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036356459] [2024-09-20 12:17:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:49,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:17:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:17:49,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393166187] [2024-09-20 12:17:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:49,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:49,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:17:49,757 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) [2024-09-20 12:17:49,759 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 12:17:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:49,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 12:17:49,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:17:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-20 12:17:49,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:17:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-09-20 12:17:50,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:17:50,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036356459] [2024-09-20 12:17:50,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:17:50,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393166187] [2024-09-20 12:17:50,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393166187] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 12:17:50,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 12:17:50,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-09-20 12:17:50,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146993062] [2024-09-20 12:17:50,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:17:50,074 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:17:50,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:17:50,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:17:50,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-20 12:17:50,075 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-20 12:17:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:17:50,158 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2024-09-20 12:17:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:17:50,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 57 [2024-09-20 12:17:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:17:50,160 INFO L225 Difference]: With dead ends: 81 [2024-09-20 12:17:50,160 INFO L226 Difference]: Without dead ends: 76 [2024-09-20 12:17:50,160 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-20 12:17:50,161 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:17:50,161 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:17:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-09-20 12:17:50,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-09-20 12:17:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 states have internal predecessors, (51), 18 states have call successors, (18), 12 states have call predecessors, (18), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:17:50,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2024-09-20 12:17:50,192 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 57 [2024-09-20 12:17:50,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:17:50,193 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2024-09-20 12:17:50,193 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-20 12:17:50,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2024-09-20 12:17:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-20 12:17:50,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:17:50,195 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 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] [2024-09-20 12:17:50,213 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 12:17:50,399 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:50,400 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:17:50,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1908834426, now seen corresponding path program 1 times [2024-09-20 12:17:50,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:17:50,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167308590] [2024-09-20 12:17:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:50,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:17:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:17:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:17:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 12:17:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:17:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:17:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 12:17:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 12:17:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:17:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:17:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:17:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-09-20 12:17:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:17:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167308590] [2024-09-20 12:17:50,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167308590] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:17:50,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075170216] [2024-09-20 12:17:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:17:50,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:50,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:17:50,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:17:50,660 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 12:17:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:17:50,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 12:17:50,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:17:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-09-20 12:17:50,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:17:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-09-20 12:17:50,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075170216] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:17:50,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:17:50,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-09-20 12:17:50,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74987695] [2024-09-20 12:17:50,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:17:50,855 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 12:17:50,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:17:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 12:17:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-20 12:17:50,856 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-20 12:17:50,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:17:50,994 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2024-09-20 12:17:50,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 12:17:50,995 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 60 [2024-09-20 12:17:50,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:17:50,996 INFO L225 Difference]: With dead ends: 81 [2024-09-20 12:17:50,996 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 12:17:50,997 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-20 12:17:50,997 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:17:50,998 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 134 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:17:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 12:17:50,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 12:17:50,998 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) [2024-09-20 12:17:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 12:17:50,999 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2024-09-20 12:17:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:17:50,999 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 12:17:50,999 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-20 12:17:50,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:17:51,000 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 12:17:51,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 12:17:51,002 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 12:17:51,019 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-20 12:17:51,203 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:17:51,207 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:17:51,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 12:18:04,835 WARN L293 SmtUtils]: Spent 10.23s on a formula simplification. DAG size of input: 61 DAG size of output: 24 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-20 12:18:05,025 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 12:18:05,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:18:05 BoogieIcfgContainer [2024-09-20 12:18:05,042 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 12:18:05,043 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 12:18:05,043 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 12:18:05,043 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 12:18:05,043 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:17:44" (3/4) ... [2024-09-20 12:18:05,045 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 12:18:05,115 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 12:18:05,115 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 12:18:05,116 INFO L158 Benchmark]: Toolchain (without parser) took 21084.08ms. Allocated memory was 167.8MB in the beginning and 239.1MB in the end (delta: 71.3MB). Free memory was 110.8MB in the beginning and 110.6MB in the end (delta: 170.7kB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. [2024-09-20 12:18:05,116 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 12:18:05,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.70ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 98.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 12:18:05,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.63ms. Allocated memory is still 167.8MB. Free memory was 98.9MB in the beginning and 97.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:18:05,117 INFO L158 Benchmark]: Boogie Preprocessor took 46.56ms. Allocated memory is still 167.8MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:18:05,117 INFO L158 Benchmark]: RCFGBuilder took 328.06ms. Allocated memory is still 167.8MB. Free memory was 96.1MB in the beginning and 82.8MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 12:18:05,118 INFO L158 Benchmark]: TraceAbstraction took 20319.60ms. Allocated memory was 167.8MB in the beginning and 239.1MB in the end (delta: 71.3MB). Free memory was 82.4MB in the beginning and 113.8MB in the end (delta: -31.3MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB. [2024-09-20 12:18:05,118 INFO L158 Benchmark]: Witness Printer took 73.08ms. Allocated memory is still 239.1MB. Free memory was 113.8MB in the beginning and 110.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:18:05,120 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.70ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 98.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.63ms. Allocated memory is still 167.8MB. Free memory was 98.9MB in the beginning and 97.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.56ms. Allocated memory is still 167.8MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 328.06ms. Allocated memory is still 167.8MB. Free memory was 96.1MB in the beginning and 82.8MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 20319.60ms. Allocated memory was 167.8MB in the beginning and 239.1MB in the end (delta: 71.3MB). Free memory was 82.4MB in the beginning and 113.8MB in the end (delta: -31.3MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB. * Witness Printer took 73.08ms. Allocated memory is still 239.1MB. Free memory was 113.8MB in the beginning and 110.6MB 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: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 10, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 1184 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 882 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 528 IncrementalHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 302 mSDtfsCounter, 528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 564 GetRequests, 497 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=7, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 24 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 698 NumberOfCodeBlocks, 698 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 626 ConstructedInterpolants, 0 QuantifiedInterpolants, 1838 SizeOfPredicates, 14 NumberOfNonLiveVariables, 868 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 657/715 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: 33]: Loop Invariant Derived loop invariant: (((((((__int128) q * x) + a) + ((__int128) y * s)) == ((((__int128) y * r) + b) + ((__int128) p * x))) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (((__int128) p * s) == (((__int128) q * r) + 1))) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-20 12:18:05,144 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