./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --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/hard-ll_valuebound2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 --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 01:46:25,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 01:46:25,579 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 01:46:25,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 01:46:25,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 01:46:25,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 01:46:25,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 01:46:25,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 01:46:25,616 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 01:46:25,617 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 01:46:25,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 01:46:25,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 01:46:25,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 01:46:25,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 01:46:25,620 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 01:46:25,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 01:46:25,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 01:46:25,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 01:46:25,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 01:46:25,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 01:46:25,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 01:46:25,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 01:46:25,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 01:46:25,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 01:46:25,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 01:46:25,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 01:46:25,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 01:46:25,627 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 01:46:25,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 01:46:25,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 01:46:25,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 01:46:25,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 01:46:25,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 01:46:25,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 01:46:25,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 01:46:25,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 01:46:25,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 01:46:25,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 01:46:25,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 01:46:25,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 01:46:25,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 01:46:25,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 01:46:25,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 01:46:25,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 01:46:25,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 01:46:25,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 01:46:25,870 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 01:46:25,871 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 01:46:25,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2024-09-13 01:46:27,259 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 01:46:27,417 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 01:46:27,418 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2024-09-13 01:46:27,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c79ab288b/98b2c653b4404ee29694e3166c191056/FLAG58e058ee4 [2024-09-13 01:46:27,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c79ab288b/98b2c653b4404ee29694e3166c191056 [2024-09-13 01:46:27,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 01:46:27,441 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 01:46:27,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 01:46:27,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 01:46:27,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 01:46:27,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5843f1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27, skipping insertion in model container [2024-09-13 01:46:27,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,469 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 01:46:27,605 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/hard-ll_valuebound2.c[538,551] [2024-09-13 01:46:27,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 01:46:27,636 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 01:46:27,647 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/hard-ll_valuebound2.c[538,551] [2024-09-13 01:46:27,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 01:46:27,670 INFO L204 MainTranslator]: Completed translation [2024-09-13 01:46:27,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27 WrapperNode [2024-09-13 01:46:27,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 01:46:27,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 01:46:27,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 01:46:27,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 01:46:27,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,693 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 01:46:27,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 01:46:27,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 01:46:27,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 01:46:27,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 01:46:27,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,705 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,715 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 01:46:27,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,718 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 01:46:27,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 01:46:27,728 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 01:46:27,728 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 01:46:27,729 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (1/1) ... [2024-09-13 01:46:27,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 01:46:27,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:27,763 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 01:46:27,770 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 01:46:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 01:46:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 01:46:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 01:46:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 01:46:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 01:46:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 01:46:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 01:46:27,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 01:46:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 01:46:27,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 01:46:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 01:46:27,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 01:46:27,884 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 01:46:27,886 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 01:46:28,153 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 01:46:28,154 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 01:46:28,181 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 01:46:28,182 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 01:46:28,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 01:46:28 BoogieIcfgContainer [2024-09-13 01:46:28,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 01:46:28,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 01:46:28,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 01:46:28,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 01:46:28,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 01:46:27" (1/3) ... [2024-09-13 01:46:28,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca1d787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 01:46:28, skipping insertion in model container [2024-09-13 01:46:28,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 01:46:27" (2/3) ... [2024-09-13 01:46:28,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca1d787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 01:46:28, skipping insertion in model container [2024-09-13 01:46:28,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 01:46:28" (3/3) ... [2024-09-13 01:46:28,192 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound2.c [2024-09-13 01:46:28,209 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 01:46:28,210 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 01:46:28,262 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 01:46:28,269 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;@6e2a6dca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 01:46:28,269 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 01:46:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-13 01:46:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 01:46:28,279 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:28,280 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:28,280 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:28,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:28,285 INFO L85 PathProgramCache]: Analyzing trace with hash 367441184, now seen corresponding path program 1 times [2024-09-13 01:46:28,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:28,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630150104] [2024-09-13 01:46:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:28,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:28,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:46:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:28,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:46:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:28,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:46:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:28,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:46:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 01:46:28,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630150104] [2024-09-13 01:46:28,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630150104] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:46:28,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 01:46:28,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 01:46:28,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123719034] [2024-09-13 01:46:28,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:46:28,467 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 01:46:28,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:28,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 01:46:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 01:46:28,487 INFO L87 Difference]: Start difference. First operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 01:46:28,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:28,511 INFO L93 Difference]: Finished difference Result 66 states and 107 transitions. [2024-09-13 01:46:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 01:46:28,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-13 01:46:28,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:28,522 INFO L225 Difference]: With dead ends: 66 [2024-09-13 01:46:28,522 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 01:46:28,525 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 01:46:28,528 INFO L434 NwaCegarLoop]: 44 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, 44 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 01:46:28,529 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 01:46:28,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 01:46:28,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-13 01:46:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 01:46:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-09-13 01:46:28,592 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 27 [2024-09-13 01:46:28,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:28,594 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-09-13 01:46:28,594 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 01:46:28,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-09-13 01:46:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 01:46:28,597 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:28,597 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:28,598 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 01:46:28,598 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:28,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash -781266146, now seen corresponding path program 1 times [2024-09-13 01:46:28,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:28,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112600779] [2024-09-13 01:46:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:28,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:28,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:46:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:28,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:46:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:28,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:46:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:28,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:46:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 01:46:28,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:28,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112600779] [2024-09-13 01:46:28,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112600779] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:46:28,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 01:46:28,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 01:46:28,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864607831] [2024-09-13 01:46:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:46:28,804 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:46:28,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:28,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:46:28,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:46:28,806 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 01:46:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:28,875 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2024-09-13 01:46:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:46:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-13 01:46:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:28,879 INFO L225 Difference]: With dead ends: 45 [2024-09-13 01:46:28,879 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 01:46:28,879 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 01:46:28,882 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:28,883 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 134 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 01:46:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 01:46:28,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2024-09-13 01:46:28,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 01:46:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-09-13 01:46:28,901 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 27 [2024-09-13 01:46:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:28,902 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-09-13 01:46:28,902 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 01:46:28,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-09-13 01:46:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 01:46:28,904 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:28,904 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:28,904 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 01:46:28,904 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:28,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:28,905 INFO L85 PathProgramCache]: Analyzing trace with hash 992341126, now seen corresponding path program 1 times [2024-09-13 01:46:28,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:28,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704545284] [2024-09-13 01:46:28,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:28,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:29,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:46:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:29,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:46:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:29,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:46:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:29,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:46:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:29,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:46:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 01:46:29,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:29,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704545284] [2024-09-13 01:46:29,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704545284] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:46:29,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 01:46:29,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 01:46:29,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655550031] [2024-09-13 01:46:29,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:46:29,046 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:46:29,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:29,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:46:29,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:46:29,047 INFO L87 Difference]: Start difference. First operand 36 states and 45 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 01:46:29,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:29,119 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-09-13 01:46:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:46:29,120 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-13 01:46:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:29,121 INFO L225 Difference]: With dead ends: 49 [2024-09-13 01:46:29,121 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 01:46:29,121 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 01:46:29,122 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:29,123 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 131 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 01:46:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 01:46:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-13 01:46:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 01:46:29,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-09-13 01:46:29,138 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 32 [2024-09-13 01:46:29,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:29,139 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-09-13 01:46:29,139 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 01:46:29,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:29,140 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-09-13 01:46:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-13 01:46:29,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:29,141 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-09-13 01:46:29,142 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 01:46:29,142 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:29,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1500804130, now seen corresponding path program 1 times [2024-09-13 01:46:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:29,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979243859] [2024-09-13 01:46:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:46:29,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313317788] [2024-09-13 01:46:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:29,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:29,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:29,181 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 01:46:29,182 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 01:46:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:29,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 01:46:29,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 01:46:29,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 01:46:29,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:29,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979243859] [2024-09-13 01:46:29,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:46:29,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313317788] [2024-09-13 01:46:29,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313317788] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:46:29,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 01:46:29,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 01:46:29,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346934097] [2024-09-13 01:46:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:46:29,384 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:46:29,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:46:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:46:29,385 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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 01:46:29,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:29,473 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2024-09-13 01:46:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:46:29,474 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 01:46:29,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:29,476 INFO L225 Difference]: With dead ends: 66 [2024-09-13 01:46:29,478 INFO L226 Difference]: Without dead ends: 53 [2024-09-13 01:46:29,479 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 01:46:29,480 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:29,480 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 132 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 01:46:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-13 01:46:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-09-13 01:46:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-13 01:46:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2024-09-13 01:46:29,499 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 37 [2024-09-13 01:46:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:29,499 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2024-09-13 01:46:29,500 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 01:46:29,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:29,501 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2024-09-13 01:46:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-13 01:46:29,503 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:29,503 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2024-09-13 01:46:29,522 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 01:46:29,707 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:29,708 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:29,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1357220557, now seen corresponding path program 1 times [2024-09-13 01:46:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:29,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355171305] [2024-09-13 01:46:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:29,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:46:29,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095715637] [2024-09-13 01:46:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:29,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:29,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:29,740 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 01:46:29,743 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 01:46:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:29,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-13 01:46:29,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-13 01:46:29,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:46:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-13 01:46:30,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:30,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355171305] [2024-09-13 01:46:30,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:46:30,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095715637] [2024-09-13 01:46:30,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095715637] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:46:30,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 01:46:30,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-13 01:46:30,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978873945] [2024-09-13 01:46:30,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 01:46:30,128 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 01:46:30,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 01:46:30,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-13 01:46:30,129 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 01:46:30,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:30,248 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2024-09-13 01:46:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 01:46:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 44 [2024-09-13 01:46:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:30,251 INFO L225 Difference]: With dead ends: 68 [2024-09-13 01:46:30,251 INFO L226 Difference]: Without dead ends: 66 [2024-09-13 01:46:30,252 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-13 01:46:30,255 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:30,255 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 147 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 01:46:30,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-13 01:46:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2024-09-13 01:46:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 01:46:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2024-09-13 01:46:30,284 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 44 [2024-09-13 01:46:30,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:30,285 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2024-09-13 01:46:30,285 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 01:46:30,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:30,285 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2024-09-13 01:46:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-13 01:46:30,286 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:30,287 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:30,310 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 01:46:30,490 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:30,495 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:30,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:30,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1728018148, now seen corresponding path program 1 times [2024-09-13 01:46:30,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:30,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136728669] [2024-09-13 01:46:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:30,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:46:30,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121924858] [2024-09-13 01:46:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:30,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:30,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:30,539 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 01:46:30,540 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 01:46:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:30,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 01:46:30,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-13 01:46:30,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:46:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-13 01:46:30,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:30,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136728669] [2024-09-13 01:46:30,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:46:30,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121924858] [2024-09-13 01:46:30,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121924858] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 01:46:30,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 01:46:30,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-13 01:46:30,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43591543] [2024-09-13 01:46:30,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:46:30,832 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:46:30,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:30,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:46:30,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 01:46:30,834 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (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 01:46:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:30,945 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-09-13 01:46:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:46:30,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (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 54 [2024-09-13 01:46:30,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:30,947 INFO L225 Difference]: With dead ends: 73 [2024-09-13 01:46:30,947 INFO L226 Difference]: Without dead ends: 71 [2024-09-13 01:46:30,947 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-13 01:46:30,948 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:30,948 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 125 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 01:46:30,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-13 01:46:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-09-13 01:46:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-13 01:46:30,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2024-09-13 01:46:30,982 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 54 [2024-09-13 01:46:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:30,982 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2024-09-13 01:46:30,982 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (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 01:46:30,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2024-09-13 01:46:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-13 01:46:30,984 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:30,984 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:31,002 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 01:46:31,189 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 01:46:31,190 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:31,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:31,191 INFO L85 PathProgramCache]: Analyzing trace with hash 515743006, now seen corresponding path program 1 times [2024-09-13 01:46:31,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:31,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021053397] [2024-09-13 01:46:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:31,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:46:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:46:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:46:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:46:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:46:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:46:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:46:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:46:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:46:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 01:46:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-13 01:46:31,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:31,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021053397] [2024-09-13 01:46:31,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021053397] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:46:31,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 01:46:31,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 01:46:31,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526350756] [2024-09-13 01:46:31,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:46:31,384 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:46:31,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:31,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:46:31,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:46:31,386 INFO L87 Difference]: Start difference. First operand 70 states and 88 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-13 01:46:31,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:31,460 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-09-13 01:46:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:46:31,460 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2024-09-13 01:46:31,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:31,462 INFO L225 Difference]: With dead ends: 78 [2024-09-13 01:46:31,462 INFO L226 Difference]: Without dead ends: 66 [2024-09-13 01:46:31,462 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 01:46:31,463 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:31,463 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 01:46:31,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-13 01:46:31,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-13 01:46:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 01:46:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2024-09-13 01:46:31,482 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 60 [2024-09-13 01:46:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:31,483 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2024-09-13 01:46:31,483 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-13 01:46:31,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2024-09-13 01:46:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-13 01:46:31,484 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:31,485 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:31,485 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 01:46:31,485 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:31,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1452252536, now seen corresponding path program 1 times [2024-09-13 01:46:31,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:31,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136008125] [2024-09-13 01:46:31,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:31,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:46:31,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135761368] [2024-09-13 01:46:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:31,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:31,526 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 01:46:31,528 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 01:46:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:31,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-13 01:46:31,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-09-13 01:46:32,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:46:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-13 01:46:34,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:34,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136008125] [2024-09-13 01:46:34,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:46:34,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135761368] [2024-09-13 01:46:34,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135761368] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:46:34,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 01:46:34,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-09-13 01:46:34,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371355263] [2024-09-13 01:46:34,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 01:46:34,026 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 01:46:34,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:34,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 01:46:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2024-09-13 01:46:34,028 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 9 states have call predecessors, (23), 8 states have call successors, (23) [2024-09-13 01:46:35,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:35,280 INFO L93 Difference]: Finished difference Result 152 states and 208 transitions. [2024-09-13 01:46:35,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 01:46:35,281 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 9 states have call predecessors, (23), 8 states have call successors, (23) Word has length 74 [2024-09-13 01:46:35,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:35,284 INFO L225 Difference]: With dead ends: 152 [2024-09-13 01:46:35,286 INFO L226 Difference]: Without dead ends: 129 [2024-09-13 01:46:35,287 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2024-09-13 01:46:35,288 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 73 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:35,288 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 308 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-13 01:46:35,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-13 01:46:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 105. [2024-09-13 01:46:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.180327868852459) internal successors, (72), 65 states have internal predecessors, (72), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-13 01:46:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 132 transitions. [2024-09-13 01:46:35,340 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 132 transitions. Word has length 74 [2024-09-13 01:46:35,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:35,340 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 132 transitions. [2024-09-13 01:46:35,341 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 9 states have call predecessors, (23), 8 states have call successors, (23) [2024-09-13 01:46:35,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:35,341 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 132 transitions. [2024-09-13 01:46:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-13 01:46:35,342 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:35,343 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:35,360 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 01:46:35,546 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:35,547 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:35,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:35,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1571705391, now seen corresponding path program 1 times [2024-09-13 01:46:35,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:35,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229237184] [2024-09-13 01:46:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:35,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:46:35,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084435121] [2024-09-13 01:46:35,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:35,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:35,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:35,587 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 01:46:35,588 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 01:46:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:35,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-13 01:46:35,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-13 01:46:36,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:46:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-13 01:46:36,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229237184] [2024-09-13 01:46:36,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:46:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084435121] [2024-09-13 01:46:36,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084435121] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:46:36,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 01:46:36,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-09-13 01:46:36,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917590995] [2024-09-13 01:46:36,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 01:46:36,813 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 01:46:36,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:36,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 01:46:36,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-09-13 01:46:36,815 INFO L87 Difference]: Start difference. First operand 105 states and 132 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-13 01:46:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:37,373 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2024-09-13 01:46:37,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 01:46:37,374 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) Word has length 85 [2024-09-13 01:46:37,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:37,377 INFO L225 Difference]: With dead ends: 145 [2024-09-13 01:46:37,377 INFO L226 Difference]: Without dead ends: 111 [2024-09-13 01:46:37,381 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-09-13 01:46:37,381 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:37,382 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 350 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 01:46:37,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-13 01:46:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2024-09-13 01:46:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 27 states have call successors, (27), 13 states have call predecessors, (27), 12 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-13 01:46:37,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 118 transitions. [2024-09-13 01:46:37,420 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 118 transitions. Word has length 85 [2024-09-13 01:46:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:37,420 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 118 transitions. [2024-09-13 01:46:37,421 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-13 01:46:37,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:37,421 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 118 transitions. [2024-09-13 01:46:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-13 01:46:37,422 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:37,423 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:37,439 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 01:46:37,623 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:37,624 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:37,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1973508941, now seen corresponding path program 2 times [2024-09-13 01:46:37,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:37,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448204640] [2024-09-13 01:46:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:37,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:46:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:46:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:46:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:46:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:46:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:46:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:46:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:46:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:46:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 01:46:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 01:46:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 01:46:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-13 01:46:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-13 01:46:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-13 01:46:37,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:37,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448204640] [2024-09-13 01:46:37,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448204640] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:46:37,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033606573] [2024-09-13 01:46:37,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 01:46:37,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:37,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:37,841 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 01:46:37,843 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 01:46:37,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 01:46:37,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 01:46:37,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 01:46:37,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-13 01:46:37,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:46:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-13 01:46:38,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033606573] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:46:38,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 01:46:38,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-09-13 01:46:38,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365115878] [2024-09-13 01:46:38,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 01:46:38,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:46:38,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:46:38,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:46:38,021 INFO L87 Difference]: Start difference. First operand 97 states and 118 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-09-13 01:46:38,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:38,097 INFO L93 Difference]: Finished difference Result 124 states and 155 transitions. [2024-09-13 01:46:38,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 01:46:38,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 87 [2024-09-13 01:46:38,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:38,099 INFO L225 Difference]: With dead ends: 124 [2024-09-13 01:46:38,099 INFO L226 Difference]: Without dead ends: 102 [2024-09-13 01:46:38,100 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-13 01:46:38,101 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:38,102 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 01:46:38,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-13 01:46:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-09-13 01:46:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-13 01:46:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2024-09-13 01:46:38,144 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 87 [2024-09-13 01:46:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:38,145 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2024-09-13 01:46:38,145 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-09-13 01:46:38,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:38,145 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2024-09-13 01:46:38,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-13 01:46:38,148 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:38,148 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:38,164 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 01:46:38,349 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 01:46:38,349 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:38,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash -637517709, now seen corresponding path program 1 times [2024-09-13 01:46:38,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:38,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262542036] [2024-09-13 01:46:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:46:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:46:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:46:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:46:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:46:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:46:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:46:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:46:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:46:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 01:46:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 01:46:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 01:46:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-13 01:46:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-13 01:46:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-13 01:46:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 01:46:38,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:38,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262542036] [2024-09-13 01:46:38,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262542036] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:46:38,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817592114] [2024-09-13 01:46:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:38,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:38,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:38,622 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 01:46:38,625 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 01:46:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:38,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-13 01:46:38,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-09-13 01:46:38,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:46:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-13 01:46:39,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817592114] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:46:39,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 01:46:39,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 18 [2024-09-13 01:46:39,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139905532] [2024-09-13 01:46:39,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 01:46:39,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 01:46:39,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 01:46:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-13 01:46:39,418 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) [2024-09-13 01:46:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:39,780 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2024-09-13 01:46:39,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 01:46:39,781 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) Word has length 90 [2024-09-13 01:46:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:39,782 INFO L225 Difference]: With dead ends: 117 [2024-09-13 01:46:39,782 INFO L226 Difference]: Without dead ends: 100 [2024-09-13 01:46:39,783 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-09-13 01:46:39,783 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 22 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:39,784 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 389 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 01:46:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-13 01:46:39,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2024-09-13 01:46:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 57 states have internal predecessors, (63), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-13 01:46:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2024-09-13 01:46:39,816 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 90 [2024-09-13 01:46:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:39,816 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2024-09-13 01:46:39,817 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) [2024-09-13 01:46:39,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2024-09-13 01:46:39,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-09-13 01:46:39,818 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:39,818 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:39,835 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 01:46:40,018 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:40,019 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:40,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:40,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1204328542, now seen corresponding path program 1 times [2024-09-13 01:46:40,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:40,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083978575] [2024-09-13 01:46:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:40,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:46:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:46:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:46:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:46:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:46:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:46:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:46:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:46:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:46:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 01:46:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 01:46:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 01:46:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-13 01:46:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 01:46:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 01:46:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-13 01:46:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-13 01:46:40,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083978575] [2024-09-13 01:46:40,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083978575] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:46:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858303408] [2024-09-13 01:46:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:40,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:40,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:40,141 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 01:46:40,144 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 01:46:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:40,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-13 01:46:40,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-09-13 01:46:40,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 01:46:40,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858303408] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 01:46:40,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 01:46:40,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-09-13 01:46:40,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963607391] [2024-09-13 01:46:40,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 01:46:40,240 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 01:46:40,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:40,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 01:46:40,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-13 01:46:40,241 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-09-13 01:46:40,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:40,308 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2024-09-13 01:46:40,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 01:46:40,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 94 [2024-09-13 01:46:40,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:40,310 INFO L225 Difference]: With dead ends: 100 [2024-09-13 01:46:40,310 INFO L226 Difference]: Without dead ends: 88 [2024-09-13 01:46:40,311 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-13 01:46:40,311 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:40,312 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 01:46:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-13 01:46:40,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-13 01:46:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 24 states have call successors, (24), 12 states have call predecessors, (24), 11 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-13 01:46:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2024-09-13 01:46:40,343 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 94 [2024-09-13 01:46:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:40,344 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2024-09-13 01:46:40,344 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-09-13 01:46:40,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2024-09-13 01:46:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-13 01:46:40,345 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:40,345 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:40,359 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 01:46:40,546 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:40,546 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:40,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash -588826413, now seen corresponding path program 3 times [2024-09-13 01:46:40,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:40,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008252764] [2024-09-13 01:46:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:40,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:46:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:46:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:46:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:46:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:46:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:46:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:46:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:46:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:46:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 01:46:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 01:46:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 01:46:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-13 01:46:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 01:46:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 01:46:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-13 01:46:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-13 01:46:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-09-13 01:46:41,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:41,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008252764] [2024-09-13 01:46:41,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008252764] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:46:41,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827154938] [2024-09-13 01:46:41,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 01:46:41,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:41,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:41,207 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 01:46:41,208 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 01:46:41,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 01:46:41,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 01:46:41,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-13 01:46:41,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-09-13 01:46:41,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:46:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-09-13 01:46:42,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827154938] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:46:42,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 01:46:42,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-09-13 01:46:42,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849186406] [2024-09-13 01:46:42,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 01:46:42,586 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 01:46:42,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:42,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 01:46:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2024-09-13 01:46:42,587 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 23 states have internal predecessors, (57), 16 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 17 states have call predecessors, (45), 15 states have call successors, (45) [2024-09-13 01:46:43,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:43,211 INFO L93 Difference]: Finished difference Result 153 states and 189 transitions. [2024-09-13 01:46:43,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 01:46:43,212 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 23 states have internal predecessors, (57), 16 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 17 states have call predecessors, (45), 15 states have call successors, (45) Word has length 104 [2024-09-13 01:46:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:43,215 INFO L225 Difference]: With dead ends: 153 [2024-09-13 01:46:43,215 INFO L226 Difference]: Without dead ends: 101 [2024-09-13 01:46:43,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 229 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2024-09-13 01:46:43,217 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 50 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:43,217 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 502 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 01:46:43,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-13 01:46:43,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2024-09-13 01:46:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 54 states have internal predecessors, (58), 24 states have call successors, (24), 12 states have call predecessors, (24), 11 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-13 01:46:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2024-09-13 01:46:43,258 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 104 [2024-09-13 01:46:43,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:43,258 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2024-09-13 01:46:43,259 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 23 states have internal predecessors, (57), 16 states have call successors, (45), 2 states have call predecessors, (45), 2 states have return successors, (45), 17 states have call predecessors, (45), 15 states have call successors, (45) [2024-09-13 01:46:43,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2024-09-13 01:46:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-13 01:46:43,261 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:43,261 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:43,270 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 01:46:43,466 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-13 01:46:43,467 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:43,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:43,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1394769075, now seen corresponding path program 1 times [2024-09-13 01:46:43,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:43,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346501771] [2024-09-13 01:46:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:43,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:46:43,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752986832] [2024-09-13 01:46:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:43,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:43,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:43,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 01:46:43,498 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 01:46:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:43,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-13 01:46:43,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 27 proven. 72 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-09-13 01:46:44,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:46:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 27 proven. 72 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-09-13 01:46:46,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:46,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346501771] [2024-09-13 01:46:46,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:46:46,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752986832] [2024-09-13 01:46:46,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752986832] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:46:46,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 01:46:46,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 29 [2024-09-13 01:46:46,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676982159] [2024-09-13 01:46:46,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 01:46:46,385 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-13 01:46:46,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:46,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-13 01:46:46,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2024-09-13 01:46:46,387 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 14 states have call predecessors, (35), 16 states have call successors, (35) [2024-09-13 01:46:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:47,270 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2024-09-13 01:46:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 01:46:47,271 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 14 states have call predecessors, (35), 16 states have call successors, (35) Word has length 109 [2024-09-13 01:46:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:47,272 INFO L225 Difference]: With dead ends: 117 [2024-09-13 01:46:47,272 INFO L226 Difference]: Without dead ends: 95 [2024-09-13 01:46:47,273 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2024-09-13 01:46:47,273 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 28 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:47,273 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 473 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 01:46:47,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-13 01:46:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-09-13 01:46:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 59 states have internal predecessors, (59), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-13 01:46:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2024-09-13 01:46:47,313 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 109 [2024-09-13 01:46:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:47,313 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2024-09-13 01:46:47,314 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 14 states have call predecessors, (35), 16 states have call successors, (35) [2024-09-13 01:46:47,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2024-09-13 01:46:47,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-09-13 01:46:47,316 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:47,316 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:46:47,329 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-13 01:46:47,517 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 01:46:47,517 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:47,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash 733497000, now seen corresponding path program 1 times [2024-09-13 01:46:47,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:47,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603006038] [2024-09-13 01:46:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:47,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 01:46:47,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106738184] [2024-09-13 01:46:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:47,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:47,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:47,550 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 01:46:47,557 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 01:46:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:47,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-13 01:46:47,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 64 proven. 72 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-09-13 01:46:48,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:46:49,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:49,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603006038] [2024-09-13 01:46:49,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 01:46:49,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106738184] [2024-09-13 01:46:49,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106738184] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:46:49,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 01:46:49,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-13 01:46:49,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380399131] [2024-09-13 01:46:49,464 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 01:46:49,465 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 01:46:49,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 01:46:49,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-09-13 01:46:49,466 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2024-09-13 01:46:49,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:49,836 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2024-09-13 01:46:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 01:46:49,837 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) Word has length 115 [2024-09-13 01:46:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:49,840 INFO L225 Difference]: With dead ends: 101 [2024-09-13 01:46:49,840 INFO L226 Difference]: Without dead ends: 97 [2024-09-13 01:46:49,840 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2024-09-13 01:46:49,841 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:49,841 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 405 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 01:46:49,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-13 01:46:49,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-09-13 01:46:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 60 states have (on average 1.0) internal successors, (60), 60 states have internal predecessors, (60), 22 states have call successors, (22), 16 states have call predecessors, (22), 14 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-13 01:46:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2024-09-13 01:46:49,875 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 115 [2024-09-13 01:46:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:49,877 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2024-09-13 01:46:49,877 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2024-09-13 01:46:49,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:49,879 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2024-09-13 01:46:49,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-13 01:46:49,880 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 01:46:49,880 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-09-13 01:46:49,896 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-13 01:46:50,081 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 01:46:50,081 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 01:46:50,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash 265983484, now seen corresponding path program 1 times [2024-09-13 01:46:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 01:46:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139518010] [2024-09-13 01:46:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:50,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 01:46:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 01:46:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 01:46:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 01:46:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 01:46:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 01:46:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 01:46:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 01:46:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 01:46:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-13 01:46:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-13 01:46:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-13 01:46:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-13 01:46:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-13 01:46:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-13 01:46:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-13 01:46:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-13 01:46:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-13 01:46:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-13 01:46:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-13 01:46:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-13 01:46:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-09-13 01:46:50,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 01:46:50,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139518010] [2024-09-13 01:46:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139518010] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 01:46:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625633202] [2024-09-13 01:46:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 01:46:50,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 01:46:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 01:46:50,507 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 01:46:50,509 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 01:46:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 01:46:50,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-13 01:46:50,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 01:46:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 31 proven. 74 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-09-13 01:46:50,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 01:46:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 31 proven. 74 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-09-13 01:46:51,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625633202] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 01:46:51,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 01:46:51,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 26 [2024-09-13 01:46:51,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343676320] [2024-09-13 01:46:51,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 01:46:51,686 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-13 01:46:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 01:46:51,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-13 01:46:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-09-13 01:46:51,687 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 23 states have internal predecessors, (61), 19 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 17 states have call predecessors, (49), 19 states have call successors, (49) [2024-09-13 01:46:52,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 01:46:52,032 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2024-09-13 01:46:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 01:46:52,033 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 23 states have internal predecessors, (61), 19 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 17 states have call predecessors, (49), 19 states have call successors, (49) Word has length 120 [2024-09-13 01:46:52,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 01:46:52,033 INFO L225 Difference]: With dead ends: 97 [2024-09-13 01:46:52,033 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 01:46:52,034 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2024-09-13 01:46:52,034 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 01:46:52,034 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 354 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 01:46:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 01:46:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 01:46:52,035 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 01:46:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 01:46:52,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2024-09-13 01:46:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 01:46:52,035 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 01:46:52,035 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 23 states have internal predecessors, (61), 19 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 17 states have call predecessors, (49), 19 states have call successors, (49) [2024-09-13 01:46:52,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 01:46:52,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 01:46:52,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 01:46:52,038 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 01:46:52,054 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-13 01:46:52,242 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-13 01:46:52,245 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 01:46:52,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 01:46:54,205 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 01:46:54,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 01:46:54 BoogieIcfgContainer [2024-09-13 01:46:54,233 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 01:46:54,233 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 01:46:54,233 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 01:46:54,233 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 01:46:54,234 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 01:46:28" (3/4) ... [2024-09-13 01:46:54,238 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 01:46:54,241 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 01:46:54,241 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 01:46:54,241 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 01:46:54,241 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 01:46:54,246 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-09-13 01:46:54,247 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-09-13 01:46:54,247 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 01:46:54,247 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 01:46:54,344 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 01:46:54,344 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 01:46:54,344 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 01:46:54,345 INFO L158 Benchmark]: Toolchain (without parser) took 26904.08ms. Allocated memory was 146.8MB in the beginning and 245.4MB in the end (delta: 98.6MB). Free memory was 75.6MB in the beginning and 138.9MB in the end (delta: -63.3MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2024-09-13 01:46:54,345 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 01:46:54,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.56ms. Allocated memory is still 146.8MB. Free memory was 75.4MB in the beginning and 63.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 01:46:54,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.56ms. Allocated memory is still 146.8MB. Free memory was 63.4MB in the beginning and 62.5MB in the end (delta: 852.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 01:46:54,346 INFO L158 Benchmark]: Boogie Preprocessor took 32.67ms. Allocated memory is still 146.8MB. Free memory was 62.5MB in the beginning and 60.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 01:46:54,347 INFO L158 Benchmark]: RCFGBuilder took 454.29ms. Allocated memory was 146.8MB in the beginning and 203.4MB in the end (delta: 56.6MB). Free memory was 60.7MB in the beginning and 172.0MB in the end (delta: -111.4MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2024-09-13 01:46:54,347 INFO L158 Benchmark]: TraceAbstraction took 26048.31ms. Allocated memory was 203.4MB in the beginning and 245.4MB in the end (delta: 41.9MB). Free memory was 172.0MB in the beginning and 144.1MB in the end (delta: 27.9MB). Peak memory consumption was 144.8MB. Max. memory is 16.1GB. [2024-09-13 01:46:54,348 INFO L158 Benchmark]: Witness Printer took 111.23ms. Allocated memory is still 245.4MB. Free memory was 144.1MB in the beginning and 138.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 01:46:54,349 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.56ms. Allocated memory is still 146.8MB. Free memory was 75.4MB in the beginning and 63.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.56ms. Allocated memory is still 146.8MB. Free memory was 63.4MB in the beginning and 62.5MB in the end (delta: 852.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.67ms. Allocated memory is still 146.8MB. Free memory was 62.5MB in the beginning and 60.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 454.29ms. Allocated memory was 146.8MB in the beginning and 203.4MB in the end (delta: 56.6MB). Free memory was 60.7MB in the beginning and 172.0MB in the end (delta: -111.4MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 26048.31ms. Allocated memory was 203.4MB in the beginning and 245.4MB in the end (delta: 41.9MB). Free memory was 172.0MB in the beginning and 144.1MB in the end (delta: 27.9MB). Peak memory consumption was 144.8MB. Max. memory is 16.1GB. * Witness Printer took 111.23ms. Allocated memory is still 245.4MB. Free memory was 144.1MB in the beginning and 138.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.0s, OverallIterations: 16, TraceHistogramMax: 17, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 313 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 262 mSDsluCounter, 3912 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3270 mSDsCounter, 326 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2541 IncrementalHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 326 mSolverCounterUnsat, 642 mSDtfsCounter, 2541 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2120 GetRequests, 1881 SyntacticMatches, 9 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=8, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 75 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 2172 NumberOfCodeBlocks, 2145 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2391 ConstructedInterpolants, 0 QuantifiedInterpolants, 16611 SizeOfPredicates, 34 NumberOfNonLiveVariables, 2175 ConjunctsInSsa, 277 ConjunctsInUnsatCore, 30 InterpolantComputations, 7 PerfectInterpolantSequences, 6714/7295 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((((((0 <= r) && (((__int128) r + 1) <= d)) && ((d + r) == (A % 4294967296))) && ((r + ((long long) 2 * (B % 4294967296))) == ((A % 4294967296) + d))) && (q == 1)) && ((A % 4294967296) <= 2)) && (p == 1)) || ((((((r == 0) && (q == 2)) && (p == 2)) && ((((B / 4294967296) * 4294967296) + 1) == B)) && ((A % 4294967296) == 2)) && (d == 2))) || ((((((((A % 4294967296) == r) && (d == ((long long) 2 * (B % 4294967296)))) && (((__int128) r + 1) <= d)) && (p == 2)) && (q == 0)) && ((A % 4294967296) <= 2)) && ((B % 4294967296) <= r))) || (((((((B % 4294967296) == 1) && (r == 0)) && (q == 2)) && ((A % 4294967296) == 2)) && (d == 1)) && (p == 1))) || (((((A % 4294967296) == r) && ((d + ((B / 4294967296) * 4294967296)) == B)) && (q == 0)) && (p == 1))) || (((((((0 <= (r + (((__int128) -1 * d) / 2))) && (((A % 4294967296) + d) == (((long long) (B % 4294967296) * 4) + r))) && (q == 0)) && (p == 4)) && (((A % 4294967296) + (d / 2)) == (r + ((long long) 2 * (B % 4294967296))))) && (1 <= d)) && ((A % 4294967296) <= 2))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((((A % 4294967296) == r) && ((d + ((B / 4294967296) * 4294967296)) == B)) && (q == 0)) && (1 <= d)) && ((A % 4294967296) <= 2)) && (p == 1)) || ((((((((A % 4294967296) == r) && (d == ((long long) 2 * (B % 4294967296)))) && (p == 2)) && (q == 0)) && (1 <= d)) && ((A % 4294967296) <= 2)) && ((B % 4294967296) <= r))) || (((((((0 <= (r + (((__int128) -1 * d) / 2))) && (((A % 4294967296) + d) == (((long long) (B % 4294967296) * 4) + r))) && (q == 0)) && (p == 4)) && (((A % 4294967296) + (d / 2)) == (r + ((long long) 2 * (B % 4294967296))))) && (1 <= d)) && ((A % 4294967296) <= 2))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-13 01:46:54,401 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