./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.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 3134c54bcf8aadaf562f6870f2277db1ec6f958b1ed6dba99e7410745dba79ba --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 00:22:38,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 00:22:38,586 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 00:22:38,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 00:22:38,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 00:22:38,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 00:22:38,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 00:22:38,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 00:22:38,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 00:22:38,623 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 00:22:38,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 00:22:38,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 00:22:38,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 00:22:38,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 00:22:38,627 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 00:22:38,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 00:22:38,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 00:22:38,629 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 00:22:38,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 00:22:38,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 00:22:38,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 00:22:38,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 00:22:38,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 00:22:38,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 00:22:38,635 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 00:22:38,635 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 00:22:38,636 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 00:22:38,636 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 00:22:38,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 00:22:38,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 00:22:38,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 00:22:38,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 00:22:38,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 00:22:38,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 00:22:38,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 00:22:38,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 00:22:38,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 00:22:38,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 00:22:38,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 00:22:38,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 00:22:38,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 00:22:38,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 00:22:38,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3134c54bcf8aadaf562f6870f2277db1ec6f958b1ed6dba99e7410745dba79ba Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 00:22:38,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 00:22:38,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 00:22:38,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 00:22:38,917 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 00:22:38,921 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 00:22:38,923 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2024-09-13 00:22:40,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 00:22:40,672 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 00:22:40,675 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2024-09-13 00:22:40,685 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7620e0af3/f71561805aad44b1aecf6c3073090ee8/FLAGe73ebd802 [2024-09-13 00:22:40,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7620e0af3/f71561805aad44b1aecf6c3073090ee8 [2024-09-13 00:22:40,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 00:22:40,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 00:22:40,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 00:22:40,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 00:22:40,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 00:22:40,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:40,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391c7374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40, skipping insertion in model container [2024-09-13 00:22:40,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:40,741 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 00:22:40,896 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c[489,502] [2024-09-13 00:22:40,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 00:22:40,923 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 00:22:40,933 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c[489,502] [2024-09-13 00:22:40,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 00:22:40,958 INFO L204 MainTranslator]: Completed translation [2024-09-13 00:22:40,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40 WrapperNode [2024-09-13 00:22:40,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 00:22:40,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 00:22:40,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 00:22:40,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 00:22:40,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:40,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:40,978 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 00:22:40,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 00:22:40,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 00:22:40,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 00:22:40,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 00:22:40,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:40,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:40,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:41,006 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]. [2024-09-13 00:22:41,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:41,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:41,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:41,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:41,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:41,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:41,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 00:22:41,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 00:22:41,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 00:22:41,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 00:22:41,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (1/1) ... [2024-09-13 00:22:41,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 00:22:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:41,051 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) [2024-09-13 00:22:41,054 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 [2024-09-13 00:22:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 00:22:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 00:22:41,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 00:22:41,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 00:22:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 00:22:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 00:22:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 00:22:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 00:22:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 00:22:41,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 00:22:41,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 00:22:41,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 00:22:41,151 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 00:22:41,153 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 00:22:41,341 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-13 00:22:41,341 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 00:22:41,360 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 00:22:41,360 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 00:22:41,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 12:22:41 BoogieIcfgContainer [2024-09-13 00:22:41,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 00:22:41,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 00:22:41,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 00:22:41,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 00:22:41,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 12:22:40" (1/3) ... [2024-09-13 00:22:41,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c46547e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 12:22:41, skipping insertion in model container [2024-09-13 00:22:41,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 12:22:40" (2/3) ... [2024-09-13 00:22:41,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c46547e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 12:22:41, skipping insertion in model container [2024-09-13 00:22:41,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 12:22:41" (3/3) ... [2024-09-13 00:22:41,369 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound50.c [2024-09-13 00:22:41,388 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 00:22:41,388 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 00:22:41,445 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 00:22:41,451 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;@1a794e35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 00:22:41,451 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 00:22:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-13 00:22:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 00:22:41,463 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:41,464 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:41,464 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:41,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:41,469 INFO L85 PathProgramCache]: Analyzing trace with hash 963610160, now seen corresponding path program 1 times [2024-09-13 00:22:41,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:41,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16453336] [2024-09-13 00:22:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:41,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:41,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:22:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:41,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:22:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:41,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:22:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:41,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:22:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:41,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:22:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 00:22:41,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:41,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16453336] [2024-09-13 00:22:41,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16453336] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:22:41,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:22:41,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 00:22:41,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051424790] [2024-09-13 00:22:41,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:41,680 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 00:22:41,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:41,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 00:22:41,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 00:22:41,703 INFO L87 Difference]: Start difference. First operand has 35 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 00:22:41,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:41,743 INFO L93 Difference]: Finished difference Result 64 states and 102 transitions. [2024-09-13 00:22:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 00:22:41,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-13 00:22:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:41,764 INFO L225 Difference]: With dead ends: 64 [2024-09-13 00:22:41,764 INFO L226 Difference]: Without dead ends: 31 [2024-09-13 00:22:41,767 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 00:22:41,774 INFO L434 NwaCegarLoop]: 43 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, 43 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 [2024-09-13 00:22:41,775 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 00:22:41,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-13 00:22:41,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-13 00:22:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 00:22:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2024-09-13 00:22:41,821 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 32 [2024-09-13 00:22:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:41,822 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2024-09-13 00:22:41,823 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 00:22:41,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2024-09-13 00:22:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 00:22:41,828 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:41,828 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:41,829 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 00:22:41,829 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:41,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:41,832 INFO L85 PathProgramCache]: Analyzing trace with hash -914175556, now seen corresponding path program 1 times [2024-09-13 00:22:41,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536539209] [2024-09-13 00:22:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:41,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402820023] [2024-09-13 00:22:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:41,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:41,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:41,913 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) [2024-09-13 00:22:41,924 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 00:22:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:42,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 00:22:42,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 00:22:42,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 00:22:42,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:42,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536539209] [2024-09-13 00:22:42,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:42,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402820023] [2024-09-13 00:22:42,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402820023] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:22:42,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:22:42,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 00:22:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713921623] [2024-09-13 00:22:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:42,262 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 00:22:42,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 00:22:42,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 00:22:42,265 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 00:22:42,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:42,347 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2024-09-13 00:22:42,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 00:22:42,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32 [2024-09-13 00:22:42,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:42,349 INFO L225 Difference]: With dead ends: 47 [2024-09-13 00:22:42,349 INFO L226 Difference]: Without dead ends: 45 [2024-09-13 00:22:42,350 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 00:22:42,351 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 129 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 [2024-09-13 00:22:42,351 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 129 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 00:22:42,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-13 00:22:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-09-13 00:22:42,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-13 00:22:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-09-13 00:22:42,370 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 32 [2024-09-13 00:22:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:42,371 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-09-13 00:22:42,371 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-13 00:22:42,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:42,372 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-09-13 00:22:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-13 00:22:42,373 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:42,373 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:42,389 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 00:22:42,577 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 [2024-09-13 00:22:42,578 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:42,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash 737940505, now seen corresponding path program 1 times [2024-09-13 00:22:42,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:42,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445576803] [2024-09-13 00:22:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:42,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:42,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416086927] [2024-09-13 00:22:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:42,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:42,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:42,618 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) [2024-09-13 00:22:42,619 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 00:22:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:42,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 00:22:42,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 00:22:42,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 00:22:42,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:42,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445576803] [2024-09-13 00:22:42,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:42,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416086927] [2024-09-13 00:22:42,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416086927] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:22:42,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:22:42,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 00:22:42,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702288189] [2024-09-13 00:22:42,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:42,736 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 00:22:42,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 00:22:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 00:22:42,738 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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) [2024-09-13 00:22:42,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:42,791 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-09-13 00:22:42,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 00:22:42,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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 37 [2024-09-13 00:22:42,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:42,793 INFO L225 Difference]: With dead ends: 51 [2024-09-13 00:22:42,793 INFO L226 Difference]: Without dead ends: 49 [2024-09-13 00:22:42,794 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 00:22:42,795 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 00:22:42,795 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 131 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 00:22:42,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-13 00:22:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-09-13 00:22:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-13 00:22:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-09-13 00:22:42,806 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 37 [2024-09-13 00:22:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:42,806 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-09-13 00:22:42,807 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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) [2024-09-13 00:22:42,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-09-13 00:22:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-13 00:22:42,808 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:42,809 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:42,828 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 00:22:43,012 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 [2024-09-13 00:22:43,013 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:43,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:43,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1385223068, now seen corresponding path program 1 times [2024-09-13 00:22:43,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:43,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861820728] [2024-09-13 00:22:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:43,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:43,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401500632] [2024-09-13 00:22:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:43,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:43,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:43,051 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) [2024-09-13 00:22:43,061 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 00:22:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 00:22:43,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-13 00:22:43,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 00:22:43,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:43,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861820728] [2024-09-13 00:22:43,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:43,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401500632] [2024-09-13 00:22:43,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401500632] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:22:43,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:22:43,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 00:22:43,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142916431] [2024-09-13 00:22:43,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:43,199 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 00:22:43,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 00:22:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 00:22:43,200 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 00:22:43,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:43,286 INFO L93 Difference]: Finished difference Result 73 states and 104 transitions. [2024-09-13 00:22:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 00:22:43,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-13 00:22:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:43,289 INFO L225 Difference]: With dead ends: 73 [2024-09-13 00:22:43,291 INFO L226 Difference]: Without dead ends: 69 [2024-09-13 00:22:43,292 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 00:22:43,294 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 00:22:43,296 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 130 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 00:22:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-13 00:22:43,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-09-13 00:22:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 30 states have call successors, (30), 7 states have call predecessors, (30), 6 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-13 00:22:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2024-09-13 00:22:43,319 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 42 [2024-09-13 00:22:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:43,320 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2024-09-13 00:22:43,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-13 00:22:43,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2024-09-13 00:22:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-13 00:22:43,324 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:43,324 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:43,341 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 00:22:43,524 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 [2024-09-13 00:22:43,525 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:43,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1071635405, now seen corresponding path program 1 times [2024-09-13 00:22:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:43,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447929132] [2024-09-13 00:22:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:43,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:22:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:22:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:22:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:22:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:22:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 00:22:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 00:22:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 00:22:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-13 00:22:43,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:43,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447929132] [2024-09-13 00:22:43,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447929132] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:22:43,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:22:43,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 00:22:43,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611884048] [2024-09-13 00:22:43,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:43,702 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 00:22:43,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:43,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 00:22:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 00:22:43,704 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-13 00:22:43,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:43,755 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2024-09-13 00:22:43,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 00:22:43,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 48 [2024-09-13 00:22:43,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:43,758 INFO L225 Difference]: With dead ends: 75 [2024-09-13 00:22:43,759 INFO L226 Difference]: Without dead ends: 73 [2024-09-13 00:22:43,759 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 00:22:43,760 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 140 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 [2024-09-13 00:22:43,761 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 140 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 00:22:43,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-13 00:22:43,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-09-13 00:22:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 39 states have internal predecessors, (44), 30 states have call successors, (30), 8 states have call predecessors, (30), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-13 00:22:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2024-09-13 00:22:43,783 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 48 [2024-09-13 00:22:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:43,783 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2024-09-13 00:22:43,784 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-13 00:22:43,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2024-09-13 00:22:43,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 00:22:43,787 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:43,788 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:43,788 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 00:22:43,788 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:43,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1501538128, now seen corresponding path program 1 times [2024-09-13 00:22:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:43,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881778802] [2024-09-13 00:22:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:43,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625448760] [2024-09-13 00:22:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:43,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:43,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:43,834 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) [2024-09-13 00:22:43,842 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 00:22:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:43,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 00:22:43,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-13 00:22:44,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 00:22:44,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:44,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881778802] [2024-09-13 00:22:44,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:44,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625448760] [2024-09-13 00:22:44,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625448760] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:22:44,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 00:22:44,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 00:22:44,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214174939] [2024-09-13 00:22:44,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:44,010 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 00:22:44,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:44,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 00:22:44,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 00:22:44,011 INFO L87 Difference]: Start difference. First operand 73 states and 100 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 00:22:44,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:44,072 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-09-13 00:22:44,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 00:22:44,073 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-09-13 00:22:44,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:44,074 INFO L225 Difference]: With dead ends: 83 [2024-09-13 00:22:44,074 INFO L226 Difference]: Without dead ends: 80 [2024-09-13 00:22:44,074 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 00:22:44,075 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 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 [2024-09-13 00:22:44,075 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 00:22:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-13 00:22:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-09-13 00:22:44,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-13 00:22:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-09-13 00:22:44,095 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 50 [2024-09-13 00:22:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:44,096 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-09-13 00:22:44,096 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 00:22:44,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-09-13 00:22:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-13 00:22:44,097 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:44,097 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:44,115 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 00:22:44,298 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 [2024-09-13 00:22:44,301 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:44,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash 789508930, now seen corresponding path program 1 times [2024-09-13 00:22:44,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:44,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698113801] [2024-09-13 00:22:44,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:44,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:22:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:22:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:22:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:22:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:22:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 00:22:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 00:22:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 00:22:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-13 00:22:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-13 00:22:44,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:44,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698113801] [2024-09-13 00:22:44,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698113801] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:22:44,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496934380] [2024-09-13 00:22:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:44,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:44,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:44,635 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) [2024-09-13 00:22:44,637 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 00:22:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:44,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 00:22:44,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-13 00:22:44,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 00:22:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496934380] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 00:22:44,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 00:22:44,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-13 00:22:44,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543443788] [2024-09-13 00:22:44,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:44,777 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 00:22:44,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 00:22:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-13 00:22:44,777 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 00:22:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:44,858 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2024-09-13 00:22:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 00:22:44,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 53 [2024-09-13 00:22:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:44,860 INFO L225 Difference]: With dead ends: 91 [2024-09-13 00:22:44,860 INFO L226 Difference]: Without dead ends: 87 [2024-09-13 00:22:44,860 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-09-13 00:22:44,861 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 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 [2024-09-13 00:22:44,861 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 00:22:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-13 00:22:44,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-09-13 00:22:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 50 states have internal predecessors, (55), 27 states have call successors, (27), 12 states have call predecessors, (27), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-13 00:22:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2024-09-13 00:22:44,872 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 53 [2024-09-13 00:22:44,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:44,873 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2024-09-13 00:22:44,873 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-13 00:22:44,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2024-09-13 00:22:44,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-13 00:22:44,874 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:44,874 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:44,888 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 00:22:45,078 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 [2024-09-13 00:22:45,079 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:45,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1427018501, now seen corresponding path program 2 times [2024-09-13 00:22:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:45,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92049465] [2024-09-13 00:22:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:45,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190123066] [2024-09-13 00:22:45,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 00:22:45,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:45,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:45,103 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) [2024-09-13 00:22:45,105 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 00:22:45,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 00:22:45,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 00:22:45,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-13 00:22:45,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-13 00:22:45,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:22:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-13 00:22:45,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:45,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92049465] [2024-09-13 00:22:45,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:45,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190123066] [2024-09-13 00:22:45,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190123066] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 00:22:45,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 00:22:45,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2024-09-13 00:22:45,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693963700] [2024-09-13 00:22:45,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 00:22:45,899 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 00:22:45,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:45,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 00:22:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-09-13 00:22:45,900 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-13 00:22:50,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 00:22:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:50,718 INFO L93 Difference]: Finished difference Result 132 states and 173 transitions. [2024-09-13 00:22:50,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 00:22:50,719 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 55 [2024-09-13 00:22:50,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:50,720 INFO L225 Difference]: With dead ends: 132 [2024-09-13 00:22:50,720 INFO L226 Difference]: Without dead ends: 130 [2024-09-13 00:22:50,721 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-09-13 00:22:50,721 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-09-13 00:22:50,722 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 253 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 319 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-09-13 00:22:50,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-13 00:22:50,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2024-09-13 00:22:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.150943396226415) internal successors, (61), 56 states have internal predecessors, (61), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-13 00:22:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2024-09-13 00:22:50,747 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 55 [2024-09-13 00:22:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:50,748 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2024-09-13 00:22:50,748 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-13 00:22:50,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2024-09-13 00:22:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-13 00:22:50,749 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:50,749 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:50,766 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 00:22:50,953 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 [2024-09-13 00:22:50,954 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:50,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:50,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1563984878, now seen corresponding path program 1 times [2024-09-13 00:22:50,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:50,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452202021] [2024-09-13 00:22:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:50,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:50,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125688533] [2024-09-13 00:22:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:50,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:50,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:50,969 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) [2024-09-13 00:22:50,971 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 00:22:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:51,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-13 00:22:51,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-13 00:22:51,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:22:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 00:22:51,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:51,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452202021] [2024-09-13 00:22:51,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:51,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125688533] [2024-09-13 00:22:51,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125688533] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 00:22:51,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 00:22:51,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2024-09-13 00:22:51,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176694467] [2024-09-13 00:22:51,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 00:22:51,688 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 00:22:51,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 00:22:51,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-09-13 00:22:51,689 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-09-13 00:22:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:52,606 INFO L93 Difference]: Finished difference Result 129 states and 165 transitions. [2024-09-13 00:22:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 00:22:52,606 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 60 [2024-09-13 00:22:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:52,609 INFO L225 Difference]: With dead ends: 129 [2024-09-13 00:22:52,609 INFO L226 Difference]: Without dead ends: 111 [2024-09-13 00:22:52,609 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-09-13 00:22:52,610 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-13 00:22:52,610 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 281 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-13 00:22:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-13 00:22:52,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2024-09-13 00:22:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 55 states have internal predecessors, (60), 23 states have call successors, (23), 14 states have call predecessors, (23), 13 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-13 00:22:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2024-09-13 00:22:52,646 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 60 [2024-09-13 00:22:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:52,647 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2024-09-13 00:22:52,648 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-09-13 00:22:52,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2024-09-13 00:22:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-13 00:22:52,652 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:52,652 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:52,673 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 00:22:52,852 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 [2024-09-13 00:22:52,853 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:52,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1657370914, now seen corresponding path program 1 times [2024-09-13 00:22:52,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:52,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018078] [2024-09-13 00:22:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:52,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 00:22:52,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424438780] [2024-09-13 00:22:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:52,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:52,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:52,878 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) [2024-09-13 00:22:52,883 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 00:22:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:52,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 00:22:52,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-13 00:22:53,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:22:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-09-13 00:22:53,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018078] [2024-09-13 00:22:53,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 00:22:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424438780] [2024-09-13 00:22:53,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424438780] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 00:22:53,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 00:22:53,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-09-13 00:22:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227349793] [2024-09-13 00:22:53,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 00:22:53,138 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 00:22:53,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 00:22:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-13 00:22:53,139 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 00:22:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:53,236 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2024-09-13 00:22:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 00:22:53,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-09-13 00:22:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:53,237 INFO L225 Difference]: With dead ends: 96 [2024-09-13 00:22:53,237 INFO L226 Difference]: Without dead ends: 91 [2024-09-13 00:22:53,238 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-13 00:22:53,238 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 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 [2024-09-13 00:22:53,239 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 00:22:53,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-13 00:22:53,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-09-13 00:22:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 20 states have call successors, (20), 15 states have call predecessors, (20), 13 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 00:22:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2024-09-13 00:22:53,260 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 68 [2024-09-13 00:22:53,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:53,261 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2024-09-13 00:22:53,261 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 00:22:53,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2024-09-13 00:22:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-13 00:22:53,262 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 00:22:53,262 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 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, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:53,279 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 00:22:53,463 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 [2024-09-13 00:22:53,463 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 00:22:53,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash -335668690, now seen corresponding path program 1 times [2024-09-13 00:22:53,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 00:22:53,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027309053] [2024-09-13 00:22:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:53,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 00:22:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 00:22:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 00:22:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 00:22:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 00:22:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-13 00:22:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 00:22:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 00:22:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-13 00:22:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 00:22:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 00:22:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 00:22:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 00:22:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-09-13 00:22:53,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 00:22:53,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027309053] [2024-09-13 00:22:53,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027309053] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 00:22:53,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036886121] [2024-09-13 00:22:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 00:22:53,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 00:22:53,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 00:22:53,689 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 00:22:53,700 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 00:22:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 00:22:53,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 00:22:53,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 00:22:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-09-13 00:22:53,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 00:22:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-09-13 00:22:53,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036886121] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 00:22:53,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 00:22:53,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-09-13 00:22:53,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831527593] [2024-09-13 00:22:53,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 00:22:53,855 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 00:22:53,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 00:22:53,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 00:22:53,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-13 00:22:53,856 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-13 00:22:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 00:22:53,975 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2024-09-13 00:22:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 00:22:53,976 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 71 [2024-09-13 00:22:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 00:22:53,977 INFO L225 Difference]: With dead ends: 96 [2024-09-13 00:22:53,977 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 00:22:53,977 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-13 00:22:53,978 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 00:22:53,978 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 121 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 00:22:53,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 00:22:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 00:22:53,978 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) [2024-09-13 00:22:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 00:22:53,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2024-09-13 00:22:53,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 00:22:53,979 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 00:22:53,979 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-13 00:22:53,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 00:22:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 00:22:53,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 00:22:53,984 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 00:22:54,002 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-13 00:22:54,188 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 00:22:54,192 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 00:22:54,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 00:23:05,554 WARN L293 SmtUtils]: Spent 11.04s on a formula simplification. DAG size of input: 85 DAG size of output: 36 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 00:23:20,135 WARN L293 SmtUtils]: Spent 14.50s on a formula simplification. DAG size of input: 85 DAG size of output: 36 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 00:23:25,860 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 00:23:25,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 12:23:25 BoogieIcfgContainer [2024-09-13 00:23:25,874 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 00:23:25,875 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 00:23:25,875 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 00:23:25,875 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 00:23:25,876 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 12:22:41" (3/4) ... [2024-09-13 00:23:25,877 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 00:23:25,881 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 00:23:25,881 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 00:23:25,881 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 00:23:25,881 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 00:23:25,884 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-09-13 00:23:25,885 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-09-13 00:23:25,885 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 00:23:25,885 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 00:23:25,885 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 00:23:25,961 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 00:23:25,962 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 00:23:25,962 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 00:23:25,962 INFO L158 Benchmark]: Toolchain (without parser) took 45254.46ms. Allocated memory was 155.2MB in the beginning and 216.0MB in the end (delta: 60.8MB). Free memory was 81.2MB in the beginning and 142.1MB in the end (delta: -60.9MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2024-09-13 00:23:25,963 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 155.2MB. Free memory was 106.0MB in the beginning and 105.8MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 00:23:25,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.34ms. Allocated memory is still 155.2MB. Free memory was 81.0MB in the beginning and 69.2MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 00:23:25,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.41ms. Allocated memory is still 155.2MB. Free memory was 69.1MB in the beginning and 68.2MB in the end (delta: 854.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 00:23:25,963 INFO L158 Benchmark]: Boogie Preprocessor took 37.33ms. Allocated memory is still 155.2MB. Free memory was 68.2MB in the beginning and 66.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 00:23:25,964 INFO L158 Benchmark]: RCFGBuilder took 343.23ms. Allocated memory was 155.2MB in the beginning and 216.0MB in the end (delta: 60.8MB). Free memory was 66.3MB in the beginning and 183.9MB in the end (delta: -117.6MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2024-09-13 00:23:25,964 INFO L158 Benchmark]: TraceAbstraction took 44511.46ms. Allocated memory is still 216.0MB. Free memory was 183.9MB in the beginning and 147.4MB in the end (delta: 36.6MB). Peak memory consumption was 126.7MB. Max. memory is 16.1GB. [2024-09-13 00:23:25,964 INFO L158 Benchmark]: Witness Printer took 87.15ms. Allocated memory is still 216.0MB. Free memory was 147.4MB in the beginning and 142.1MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 00:23:25,965 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 155.2MB. Free memory was 106.0MB in the beginning and 105.8MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.34ms. Allocated memory is still 155.2MB. Free memory was 81.0MB in the beginning and 69.2MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.41ms. Allocated memory is still 155.2MB. Free memory was 69.1MB in the beginning and 68.2MB in the end (delta: 854.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.33ms. Allocated memory is still 155.2MB. Free memory was 68.2MB in the beginning and 66.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 343.23ms. Allocated memory was 155.2MB in the beginning and 216.0MB in the end (delta: 60.8MB). Free memory was 66.3MB in the beginning and 183.9MB in the end (delta: -117.6MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 44511.46ms. Allocated memory is still 216.0MB. Free memory was 183.9MB in the beginning and 147.4MB in the end (delta: 36.6MB). Peak memory consumption was 126.7MB. Max. memory is 16.1GB. * Witness Printer took 87.15ms. Allocated memory is still 216.0MB. Free memory was 147.4MB in the beginning and 142.1MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.8s, OverallIterations: 11, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 1634 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1263 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1023 IncrementalHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 371 mSDtfsCounter, 1023 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 830 GetRequests, 734 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=8, InterpolantAutomatonStates: 79, 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, 11 MinimizatonAttempts, 64 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1016 NumberOfCodeBlocks, 1016 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 909 ConstructedInterpolants, 0 QuantifiedInterpolants, 2752 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1156 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 1091/1171 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: 35]: Loop Invariant Derived loop invariant: (((((b == (((__int128) q * x) + ((__int128) y * s))) && (1 <= x)) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (1 <= y)) && (((__int128) p * s) == (((__int128) q * r) + 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - 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! [2024-09-13 00:23:25,992 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