./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-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 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 18:47:12,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 18:47:12,322 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 18:47:12,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 18:47:12,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 18:47:12,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 18:47:12,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 18:47:12,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 18:47:12,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 18:47:12,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 18:47:12,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 18:47:12,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 18:47:12,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 18:47:12,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 18:47:12,362 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 18:47:12,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 18:47:12,362 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 18:47:12,363 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 18:47:12,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 18:47:12,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 18:47:12,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 18:47:12,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 18:47:12,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 18:47:12,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 18:47:12,368 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 18:47:12,368 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 18:47:12,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 18:47:12,369 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 18:47:12,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 18:47:12,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 18:47:12,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 18:47:12,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 18:47:12,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:47:12,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 18:47:12,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 18:47:12,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 18:47:12,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 18:47:12,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 18:47:12,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 18:47:12,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 18:47:12,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 18:47:12,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 18:47:12,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 18:47:12,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 18:47:12,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 18:47:12,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 18:47:12,652 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 18:47:12,653 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 18:47:12,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-09-17 18:47:14,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 18:47:14,257 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 18:47:14,258 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-09-17 18:47:14,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/52ded0ee2/0ebac7e8500343e598e96230c93ac914/FLAGb8cc7535f [2024-09-17 18:47:14,277 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/52ded0ee2/0ebac7e8500343e598e96230c93ac914 [2024-09-17 18:47:14,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 18:47:14,280 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 18:47:14,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 18:47:14,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 18:47:14,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 18:47:14,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64dc36b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14, skipping insertion in model container [2024-09-17 18:47:14,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,312 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 18:47:14,480 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2024-09-17 18:47:14,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:47:14,525 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 18:47:14,537 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2024-09-17 18:47:14,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:47:14,560 INFO L204 MainTranslator]: Completed translation [2024-09-17 18:47:14,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14 WrapperNode [2024-09-17 18:47:14,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 18:47:14,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 18:47:14,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 18:47:14,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 18:47:14,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,582 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 18:47:14,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 18:47:14,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 18:47:14,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 18:47:14,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 18:47:14,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,593 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,604 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-17 18:47:14,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,608 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 18:47:14,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 18:47:14,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 18:47:14,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 18:47:14,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (1/1) ... [2024-09-17 18:47:14,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:47:14,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:14,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-17 18:47:14,647 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-17 18:47:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 18:47:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 18:47:14,679 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 18:47:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 18:47:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 18:47:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 18:47:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 18:47:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 18:47:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 18:47:14,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 18:47:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 18:47:14,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 18:47:14,736 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 18:47:14,739 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 18:47:14,926 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-17 18:47:14,926 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 18:47:14,948 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 18:47:14,949 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-17 18:47:14,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:47:14 BoogieIcfgContainer [2024-09-17 18:47:14,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 18:47:14,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 18:47:14,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 18:47:14,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 18:47:14,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 06:47:14" (1/3) ... [2024-09-17 18:47:14,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ca3d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:47:14, skipping insertion in model container [2024-09-17 18:47:14,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:47:14" (2/3) ... [2024-09-17 18:47:14,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ca3d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:47:14, skipping insertion in model container [2024-09-17 18:47:14,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:47:14" (3/3) ... [2024-09-17 18:47:14,961 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2024-09-17 18:47:14,976 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 18:47:14,976 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 18:47:15,042 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 18:47:15,051 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;@63f8bdf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 18:47:15,052 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 18:47:15,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-17 18:47:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-17 18:47:15,069 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:15,070 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:15,071 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:15,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2011850563, now seen corresponding path program 1 times [2024-09-17 18:47:15,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:15,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933751746] [2024-09-17 18:47:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:15,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:47:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:47:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:47:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:47:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:47:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:47:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-17 18:47:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:47:15,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:15,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933751746] [2024-09-17 18:47:15,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933751746] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:47:15,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:47:15,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 18:47:15,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895168019] [2024-09-17 18:47:15,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:47:15,313 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 18:47:15,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 18:47:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:47:15,334 INFO L87 Difference]: Start difference. First operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-17 18:47:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:15,370 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2024-09-17 18:47:15,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 18:47:15,375 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-17 18:47:15,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:15,384 INFO L225 Difference]: With dead ends: 70 [2024-09-17 18:47:15,384 INFO L226 Difference]: Without dead ends: 34 [2024-09-17 18:47:15,388 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:47:15,391 INFO L434 NwaCegarLoop]: 47 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, 47 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 [2024-09-17 18:47:15,391 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:47:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-17 18:47:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-17 18:47:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-17 18:47:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-09-17 18:47:15,425 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 42 [2024-09-17 18:47:15,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:15,426 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-09-17 18:47:15,426 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-17 18:47:15,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-09-17 18:47:15,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-17 18:47:15,428 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:15,429 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:15,429 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 18:47:15,429 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:15,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:15,442 INFO L85 PathProgramCache]: Analyzing trace with hash -213832741, now seen corresponding path program 1 times [2024-09-17 18:47:15,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:15,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011236216] [2024-09-17 18:47:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:15,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:47:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:47:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:47:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:47:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:47:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:47:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-17 18:47:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-17 18:47:15,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:15,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011236216] [2024-09-17 18:47:15,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011236216] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:15,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349068061] [2024-09-17 18:47:15,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:15,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:15,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:15,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:15,799 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 18:47:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:15,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-17 18:47:15,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-17 18:47:16,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:16,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349068061] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:16,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:47:16,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-09-17 18:47:16,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080952210] [2024-09-17 18:47:16,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:16,270 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-17 18:47:16,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:16,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-17 18:47:16,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-09-17 18:47:16,271 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-17 18:47:16,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:16,521 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2024-09-17 18:47:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 18:47:16,522 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 43 [2024-09-17 18:47:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:16,524 INFO L225 Difference]: With dead ends: 55 [2024-09-17 18:47:16,525 INFO L226 Difference]: Without dead ends: 47 [2024-09-17 18:47:16,526 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-17 18:47:16,527 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:16,528 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 233 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:47:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-17 18:47:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-09-17 18:47:16,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 18:47:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2024-09-17 18:47:16,550 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 43 [2024-09-17 18:47:16,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:16,550 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2024-09-17 18:47:16,550 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-17 18:47:16,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2024-09-17 18:47:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-17 18:47:16,554 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:16,554 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:16,567 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 18:47:16,755 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:16,755 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:16,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:16,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1967462229, now seen corresponding path program 1 times [2024-09-17 18:47:16,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:16,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402408607] [2024-09-17 18:47:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:16,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:47:16,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090408136] [2024-09-17 18:47:16,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:16,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:16,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:16,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:16,814 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 18:47:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:16,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:47:16,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:47:16,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:47:16,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:16,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402408607] [2024-09-17 18:47:16,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:47:16,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090408136] [2024-09-17 18:47:16,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090408136] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:47:16,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:47:16,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:47:16,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558594787] [2024-09-17 18:47:16,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:47:16,900 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:47:16,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:16,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:47:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:47:16,901 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-17 18:47:16,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:16,948 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2024-09-17 18:47:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:47:16,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2024-09-17 18:47:16,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:16,950 INFO L225 Difference]: With dead ends: 65 [2024-09-17 18:47:16,950 INFO L226 Difference]: Without dead ends: 63 [2024-09-17 18:47:16,950 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:47:16,951 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:16,952 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:47:16,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-17 18:47:16,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-09-17 18:47:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 18:47:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-09-17 18:47:16,969 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 44 [2024-09-17 18:47:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:16,971 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-09-17 18:47:16,972 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-17 18:47:16,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2024-09-17 18:47:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-17 18:47:16,973 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:16,973 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:16,992 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-17 18:47:17,174 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:17,174 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:17,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash -189867411, now seen corresponding path program 1 times [2024-09-17 18:47:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:17,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358813912] [2024-09-17 18:47:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:47:17,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194652612] [2024-09-17 18:47:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:17,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:17,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:17,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:17,197 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 18:47:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:17,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 18:47:17,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 18:47:17,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:47:17,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:17,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358813912] [2024-09-17 18:47:17,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:47:17,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194652612] [2024-09-17 18:47:17,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194652612] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:47:17,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:47:17,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:47:17,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484316335] [2024-09-17 18:47:17,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:47:17,336 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:47:17,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:47:17,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:47:17,337 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-17 18:47:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:17,390 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-09-17 18:47:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:47:17,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-17 18:47:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:17,397 INFO L225 Difference]: With dead ends: 61 [2024-09-17 18:47:17,397 INFO L226 Difference]: Without dead ends: 59 [2024-09-17 18:47:17,397 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:47:17,398 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:17,400 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 154 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:47:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-17 18:47:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-09-17 18:47:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 18:47:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-09-17 18:47:17,419 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 49 [2024-09-17 18:47:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:17,419 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-09-17 18:47:17,423 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-17 18:47:17,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-09-17 18:47:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-17 18:47:17,425 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:17,425 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:17,441 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 18:47:17,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:17,626 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:17,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash -470549715, now seen corresponding path program 1 times [2024-09-17 18:47:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:17,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503430829] [2024-09-17 18:47:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:17,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:47:17,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691972049] [2024-09-17 18:47:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:17,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:17,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:17,664 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:17,666 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 18:47:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:17,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-17 18:47:17,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-17 18:47:17,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:47:17,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:17,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503430829] [2024-09-17 18:47:17,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:47:17,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691972049] [2024-09-17 18:47:17,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691972049] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:47:17,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:47:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:47:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968623110] [2024-09-17 18:47:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:47:17,881 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:47:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:47:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:47:17,882 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (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) [2024-09-17 18:47:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:17,954 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2024-09-17 18:47:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:47:17,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (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 59 [2024-09-17 18:47:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:17,956 INFO L225 Difference]: With dead ends: 65 [2024-09-17 18:47:17,958 INFO L226 Difference]: Without dead ends: 63 [2024-09-17 18:47:17,958 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:47:17,959 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:17,959 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 141 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:47:17,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-17 18:47:17,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-09-17 18:47:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 18:47:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-09-17 18:47:17,984 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 59 [2024-09-17 18:47:17,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:17,985 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-09-17 18:47:17,985 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (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) [2024-09-17 18:47:17,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-09-17 18:47:17,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-17 18:47:17,989 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:17,989 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:18,006 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 18:47:18,190 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:18,190 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:18,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash 487403380, now seen corresponding path program 1 times [2024-09-17 18:47:18,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:18,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448780238] [2024-09-17 18:47:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:18,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:47:18,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236313670] [2024-09-17 18:47:18,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:18,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:18,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:18,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:18,237 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 18:47:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:18,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-17 18:47:18,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-17 18:47:18,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-17 18:47:18,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:18,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448780238] [2024-09-17 18:47:18,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:47:18,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236313670] [2024-09-17 18:47:18,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236313670] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:47:18,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:47:18,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2024-09-17 18:47:18,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101373615] [2024-09-17 18:47:18,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:18,493 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-17 18:47:18,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:18,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-17 18:47:18,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-17 18:47:18,495 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-17 18:47:18,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:18,611 INFO L93 Difference]: Finished difference Result 90 states and 121 transitions. [2024-09-17 18:47:18,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 18:47:18,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2024-09-17 18:47:18,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:18,614 INFO L225 Difference]: With dead ends: 90 [2024-09-17 18:47:18,615 INFO L226 Difference]: Without dead ends: 88 [2024-09-17 18:47:18,615 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-17 18:47:18,616 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:18,616 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 233 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:47:18,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-17 18:47:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2024-09-17 18:47:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 18:47:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-09-17 18:47:18,634 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 66 [2024-09-17 18:47:18,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:18,635 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-09-17 18:47:18,635 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-17 18:47:18,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:18,635 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-09-17 18:47:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-17 18:47:18,636 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:18,636 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:18,653 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-17 18:47:18,840 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 18:47:18,841 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:18,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:18,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2098403842, now seen corresponding path program 1 times [2024-09-17 18:47:18,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:18,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952513019] [2024-09-17 18:47:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:18,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:47:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:47:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:47:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:47:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:47:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:47:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-17 18:47:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 18:47:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:47:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-17 18:47:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:47:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-17 18:47:19,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:19,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952513019] [2024-09-17 18:47:19,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952513019] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:19,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323631781] [2024-09-17 18:47:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:19,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:19,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:19,097 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:19,098 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 18:47:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 18:47:19,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-17 18:47:19,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-17 18:47:19,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323631781] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:47:19,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:47:19,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-09-17 18:47:19,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85636002] [2024-09-17 18:47:19,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:19,275 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-17 18:47:19,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:19,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-17 18:47:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-09-17 18:47:19,277 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-17 18:47:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:19,476 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2024-09-17 18:47:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 18:47:19,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 68 [2024-09-17 18:47:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:19,478 INFO L225 Difference]: With dead ends: 105 [2024-09-17 18:47:19,478 INFO L226 Difference]: Without dead ends: 97 [2024-09-17 18:47:19,478 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:47:19,479 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 32 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:19,479 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 311 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:47:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-17 18:47:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2024-09-17 18:47:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-17 18:47:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 121 transitions. [2024-09-17 18:47:19,518 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 121 transitions. Word has length 68 [2024-09-17 18:47:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:19,518 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 121 transitions. [2024-09-17 18:47:19,519 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-17 18:47:19,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 121 transitions. [2024-09-17 18:47:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-17 18:47:19,520 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:19,520 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1] [2024-09-17 18:47:19,537 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-17 18:47:19,722 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:19,722 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:19,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:19,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1520512592, now seen corresponding path program 1 times [2024-09-17 18:47:19,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:19,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681995277] [2024-09-17 18:47:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:19,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:47:19,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935635534] [2024-09-17 18:47:19,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:19,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:19,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:19,745 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:19,746 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 18:47:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:19,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-17 18:47:19,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-17 18:47:19,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:19,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:19,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681995277] [2024-09-17 18:47:19,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:47:19,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935635534] [2024-09-17 18:47:19,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935635534] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:19,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-17 18:47:19,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-09-17 18:47:19,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668007730] [2024-09-17 18:47:19,975 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:19,976 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 18:47:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 18:47:19,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-17 18:47:19,976 INFO L87 Difference]: Start difference. First operand 88 states and 121 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-17 18:47:20,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:20,110 INFO L93 Difference]: Finished difference Result 123 states and 172 transitions. [2024-09-17 18:47:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 18:47:20,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2024-09-17 18:47:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:20,112 INFO L225 Difference]: With dead ends: 123 [2024-09-17 18:47:20,112 INFO L226 Difference]: Without dead ends: 120 [2024-09-17 18:47:20,113 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-17 18:47:20,113 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:20,114 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 208 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:47:20,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-17 18:47:20,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2024-09-17 18:47:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 63 states have internal predecessors, (74), 47 states have call successors, (47), 9 states have call predecessors, (47), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-17 18:47:20,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 165 transitions. [2024-09-17 18:47:20,169 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 165 transitions. Word has length 74 [2024-09-17 18:47:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:20,170 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 165 transitions. [2024-09-17 18:47:20,170 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-17 18:47:20,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:20,172 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 165 transitions. [2024-09-17 18:47:20,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-17 18:47:20,172 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:20,173 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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, 1, 1, 1] [2024-09-17 18:47:20,190 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-17 18:47:20,373 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:20,374 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:20,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:20,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1071513618, now seen corresponding path program 2 times [2024-09-17 18:47:20,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:20,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413309259] [2024-09-17 18:47:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:20,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:47:20,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281974297] [2024-09-17 18:47:20,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:47:20,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:20,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:20,395 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) [2024-09-17 18:47:20,396 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-17 18:47:20,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:47:20,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:47:20,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-17 18:47:20,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-17 18:47:20,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:20,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:20,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413309259] [2024-09-17 18:47:20,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:47:20,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281974297] [2024-09-17 18:47:20,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281974297] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:20,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-17 18:47:20,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-17 18:47:20,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903178409] [2024-09-17 18:47:20,745 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:20,746 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-17 18:47:20,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-17 18:47:20,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:47:20,747 INFO L87 Difference]: Start difference. First operand 117 states and 165 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-17 18:47:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:20,928 INFO L93 Difference]: Finished difference Result 129 states and 175 transitions. [2024-09-17 18:47:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 18:47:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 79 [2024-09-17 18:47:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:20,930 INFO L225 Difference]: With dead ends: 129 [2024-09-17 18:47:20,930 INFO L226 Difference]: Without dead ends: 127 [2024-09-17 18:47:20,930 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-09-17 18:47:20,931 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:20,931 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 229 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:47:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-17 18:47:20,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-09-17 18:47:20,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 69 states have internal predecessors, (80), 47 states have call successors, (47), 11 states have call predecessors, (47), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-17 18:47:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions. [2024-09-17 18:47:20,968 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 79 [2024-09-17 18:47:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:20,969 INFO L474 AbstractCegarLoop]: Abstraction has 125 states and 171 transitions. [2024-09-17 18:47:20,970 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-17 18:47:20,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions. [2024-09-17 18:47:20,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-17 18:47:20,973 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:20,974 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 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, 1] [2024-09-17 18:47:20,990 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-17 18:47:21,178 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:21,179 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:21,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:21,180 INFO L85 PathProgramCache]: Analyzing trace with hash 807735120, now seen corresponding path program 3 times [2024-09-17 18:47:21,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:21,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622541115] [2024-09-17 18:47:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:21,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:47:21,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638840167] [2024-09-17 18:47:21,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:47:21,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:21,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:21,198 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) [2024-09-17 18:47:21,200 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-17 18:47:21,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-17 18:47:21,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:47:21,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-17 18:47:21,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-09-17 18:47:22,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:35,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:35,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622541115] [2024-09-17 18:47:35,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:47:35,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638840167] [2024-09-17 18:47:35,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638840167] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:35,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-17 18:47:35,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-17 18:47:35,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731907421] [2024-09-17 18:47:35,629 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:35,629 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-17 18:47:35,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:35,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-17 18:47:35,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=539, Unknown=1, NotChecked=0, Total=650 [2024-09-17 18:47:35,630 INFO L87 Difference]: Start difference. First operand 125 states and 171 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-17 18:47:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:36,097 INFO L93 Difference]: Finished difference Result 133 states and 178 transitions. [2024-09-17 18:47:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-17 18:47:36,098 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 84 [2024-09-17 18:47:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:36,100 INFO L225 Difference]: With dead ends: 133 [2024-09-17 18:47:36,100 INFO L226 Difference]: Without dead ends: 131 [2024-09-17 18:47:36,101 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=163, Invalid=706, Unknown=1, NotChecked=0, Total=870 [2024-09-17 18:47:36,101 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:36,101 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 271 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:47:36,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-17 18:47:36,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-09-17 18:47:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 72 states have internal predecessors, (83), 47 states have call successors, (47), 12 states have call predecessors, (47), 11 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-17 18:47:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2024-09-17 18:47:36,157 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 84 [2024-09-17 18:47:36,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:36,157 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2024-09-17 18:47:36,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-17 18:47:36,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:36,158 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2024-09-17 18:47:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-17 18:47:36,159 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:36,159 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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, 1, 1, 1, 1] [2024-09-17 18:47:36,171 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-17 18:47:36,359 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-17 18:47:36,359 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:36,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:36,360 INFO L85 PathProgramCache]: Analyzing trace with hash -607760099, now seen corresponding path program 1 times [2024-09-17 18:47:36,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:36,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712508830] [2024-09-17 18:47:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:36,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:47:36,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267196538] [2024-09-17 18:47:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:36,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:36,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:36,389 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) [2024-09-17 18:47:36,390 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-17 18:47:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:36,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-17 18:47:36,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-17 18:47:36,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-17 18:47:37,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:37,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712508830] [2024-09-17 18:47:37,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:47:37,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267196538] [2024-09-17 18:47:37,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267196538] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:47:37,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:47:37,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-09-17 18:47:37,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242851969] [2024-09-17 18:47:37,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:37,675 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-17 18:47:37,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:37,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-17 18:47:37,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-09-17 18:47:37,676 INFO L87 Difference]: Start difference. First operand 129 states and 174 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-17 18:47:40,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:40,355 INFO L93 Difference]: Finished difference Result 229 states and 337 transitions. [2024-09-17 18:47:40,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-17 18:47:40,356 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 90 [2024-09-17 18:47:40,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:40,358 INFO L225 Difference]: With dead ends: 229 [2024-09-17 18:47:40,358 INFO L226 Difference]: Without dead ends: 225 [2024-09-17 18:47:40,359 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-09-17 18:47:40,359 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 75 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:40,359 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 451 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-17 18:47:40,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-09-17 18:47:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2024-09-17 18:47:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 112 states have (on average 1.2410714285714286) internal successors, (139), 115 states have internal predecessors, (139), 96 states have call successors, (96), 14 states have call predecessors, (96), 13 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2024-09-17 18:47:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 328 transitions. [2024-09-17 18:47:40,454 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 328 transitions. Word has length 90 [2024-09-17 18:47:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:40,455 INFO L474 AbstractCegarLoop]: Abstraction has 222 states and 328 transitions. [2024-09-17 18:47:40,455 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-17 18:47:40,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:40,455 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 328 transitions. [2024-09-17 18:47:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-17 18:47:40,456 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:40,456 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2024-09-17 18:47:40,469 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-17 18:47:40,657 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-17 18:47:40,657 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:40,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:40,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1117188045, now seen corresponding path program 4 times [2024-09-17 18:47:40,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:40,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871108774] [2024-09-17 18:47:40,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:40,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:47:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:47:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:47:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:47:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:47:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:47:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-17 18:47:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 18:47:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:47:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-17 18:47:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:47:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-17 18:47:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-17 18:47:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:47:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-17 18:47:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-17 18:47:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-09-17 18:47:40,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871108774] [2024-09-17 18:47:40,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871108774] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:47:40,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:47:40,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:47:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823055375] [2024-09-17 18:47:40,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:47:40,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:47:40,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:40,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:47:40,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:47:40,765 INFO L87 Difference]: Start difference. First operand 222 states and 328 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-17 18:47:40,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:40,914 INFO L93 Difference]: Finished difference Result 275 states and 404 transitions. [2024-09-17 18:47:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 18:47:40,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 99 [2024-09-17 18:47:40,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:40,916 INFO L225 Difference]: With dead ends: 275 [2024-09-17 18:47:40,916 INFO L226 Difference]: Without dead ends: 201 [2024-09-17 18:47:40,917 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-17 18:47:40,918 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:40,918 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 179 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:47:40,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-17 18:47:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2024-09-17 18:47:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 98 states have internal predecessors, (112), 80 states have call successors, (80), 14 states have call predecessors, (80), 13 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2024-09-17 18:47:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 269 transitions. [2024-09-17 18:47:40,986 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 269 transitions. Word has length 99 [2024-09-17 18:47:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:40,987 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 269 transitions. [2024-09-17 18:47:40,987 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-17 18:47:40,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 269 transitions. [2024-09-17 18:47:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-09-17 18:47:40,988 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:40,989 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:40,989 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-17 18:47:40,989 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:40,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2069519471, now seen corresponding path program 1 times [2024-09-17 18:47:40,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:40,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061354081] [2024-09-17 18:47:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:40,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:47:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:47:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:47:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:47:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:47:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:47:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-17 18:47:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 18:47:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:47:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-17 18:47:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:47:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-17 18:47:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:47:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-17 18:47:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-17 18:47:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:47:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-17 18:47:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:47:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-09-17 18:47:41,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:41,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061354081] [2024-09-17 18:47:41,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061354081] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:41,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796321456] [2024-09-17 18:47:41,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:41,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:41,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:41,274 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) [2024-09-17 18:47:41,275 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-17 18:47:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:41,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-17 18:47:41,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-09-17 18:47:41,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-09-17 18:47:41,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796321456] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:47:41,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:47:41,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-17 18:47:41,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129581551] [2024-09-17 18:47:41,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:41,559 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 18:47:41,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:41,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 18:47:41,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:47:41,560 INFO L87 Difference]: Start difference. First operand 189 states and 269 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-09-17 18:47:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:41,862 INFO L93 Difference]: Finished difference Result 255 states and 363 transitions. [2024-09-17 18:47:41,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-17 18:47:41,862 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 106 [2024-09-17 18:47:41,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:41,865 INFO L225 Difference]: With dead ends: 255 [2024-09-17 18:47:41,865 INFO L226 Difference]: Without dead ends: 168 [2024-09-17 18:47:41,866 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 243 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-09-17 18:47:41,867 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 31 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:41,868 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 303 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:47:41,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-17 18:47:41,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-17 18:47:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 89 states have internal predecessors, (99), 68 states have call successors, (68), 14 states have call predecessors, (68), 13 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-17 18:47:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 232 transitions. [2024-09-17 18:47:41,939 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 232 transitions. Word has length 106 [2024-09-17 18:47:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:41,940 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 232 transitions. [2024-09-17 18:47:41,940 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-09-17 18:47:41,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 232 transitions. [2024-09-17 18:47:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-17 18:47:41,943 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:41,943 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:41,960 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-17 18:47:42,147 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:42,148 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:42,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:42,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1527784632, now seen corresponding path program 1 times [2024-09-17 18:47:42,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:42,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226368744] [2024-09-17 18:47:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:42,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:47:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:47:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:47:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:47:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:47:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:47:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-17 18:47:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 18:47:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:47:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-17 18:47:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:47:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-17 18:47:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-17 18:47:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:47:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-17 18:47:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:47:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-17 18:47:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:47:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-17 18:47:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:47:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-09-17 18:47:42,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:42,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226368744] [2024-09-17 18:47:42,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226368744] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:42,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825042390] [2024-09-17 18:47:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:42,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:42,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:42,309 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) [2024-09-17 18:47:42,311 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-17 18:47:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:42,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:47:42,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 88 proven. 9 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-09-17 18:47:42,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-09-17 18:47:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825042390] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:47:42,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:47:42,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-09-17 18:47:42,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742768545] [2024-09-17 18:47:42,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:42,508 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-17 18:47:42,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-17 18:47:42,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-17 18:47:42,508 INFO L87 Difference]: Start difference. First operand 168 states and 232 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-17 18:47:42,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:42,714 INFO L93 Difference]: Finished difference Result 194 states and 271 transitions. [2024-09-17 18:47:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-17 18:47:42,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 120 [2024-09-17 18:47:42,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:42,716 INFO L225 Difference]: With dead ends: 194 [2024-09-17 18:47:42,716 INFO L226 Difference]: Without dead ends: 182 [2024-09-17 18:47:42,716 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 278 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-09-17 18:47:42,717 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 17 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:42,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 337 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:47:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-09-17 18:47:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 163. [2024-09-17 18:47:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 83 states have (on average 1.144578313253012) internal successors, (95), 85 states have internal predecessors, (95), 67 states have call successors, (67), 13 states have call predecessors, (67), 12 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-17 18:47:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 226 transitions. [2024-09-17 18:47:42,776 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 226 transitions. Word has length 120 [2024-09-17 18:47:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:42,776 INFO L474 AbstractCegarLoop]: Abstraction has 163 states and 226 transitions. [2024-09-17 18:47:42,776 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-17 18:47:42,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 226 transitions. [2024-09-17 18:47:42,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-17 18:47:42,777 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:42,778 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 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] [2024-09-17 18:47:42,794 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-17 18:47:42,978 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-17 18:47:42,978 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:42,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:42,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2141824020, now seen corresponding path program 2 times [2024-09-17 18:47:42,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:42,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250416704] [2024-09-17 18:47:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:42,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:47:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:47:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:47:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:47:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:47:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:47:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-17 18:47:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 18:47:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:47:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-17 18:47:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:47:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-17 18:47:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-17 18:47:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:47:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-17 18:47:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:47:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-17 18:47:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:47:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-17 18:47:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-17 18:47:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-09-17 18:47:43,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:43,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250416704] [2024-09-17 18:47:43,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250416704] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:43,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091518338] [2024-09-17 18:47:43,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:47:43,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:43,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:43,226 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:43,227 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-17 18:47:43,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:47:43,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:47:43,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-17 18:47:43,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 103 proven. 18 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-09-17 18:47:43,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-09-17 18:47:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091518338] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:47:43,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:47:43,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-09-17 18:47:43,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198440093] [2024-09-17 18:47:43,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:43,574 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-17 18:47:43,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-17 18:47:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-17 18:47:43,575 INFO L87 Difference]: Start difference. First operand 163 states and 226 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) [2024-09-17 18:47:43,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:43,841 INFO L93 Difference]: Finished difference Result 196 states and 273 transitions. [2024-09-17 18:47:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-17 18:47:43,841 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) Word has length 121 [2024-09-17 18:47:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:43,843 INFO L225 Difference]: With dead ends: 196 [2024-09-17 18:47:43,843 INFO L226 Difference]: Without dead ends: 160 [2024-09-17 18:47:43,843 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 271 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-09-17 18:47:43,844 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 25 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:43,847 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 413 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:47:43,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-17 18:47:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-17 18:47:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 80 states have (on average 1.1125) internal successors, (89), 82 states have internal predecessors, (89), 67 states have call successors, (67), 13 states have call predecessors, (67), 12 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-17 18:47:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2024-09-17 18:47:43,891 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 121 [2024-09-17 18:47:43,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:43,891 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2024-09-17 18:47:43,891 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) [2024-09-17 18:47:43,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2024-09-17 18:47:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-17 18:47:43,893 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:43,893 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-09-17 18:47:43,909 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-17 18:47:44,093 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-17 18:47:44,094 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:44,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash -83573063, now seen corresponding path program 2 times [2024-09-17 18:47:44,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:44,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587319132] [2024-09-17 18:47:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:44,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:47:44,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703937595] [2024-09-17 18:47:44,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:47:44,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:44,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:44,120 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:44,122 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-17 18:47:44,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:47:44,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:47:44,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-17 18:47:44,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-17 18:47:45,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-09-17 18:47:46,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:46,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587319132] [2024-09-17 18:47:46,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:47:46,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703937595] [2024-09-17 18:47:46,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703937595] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:47:46,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:47:46,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2024-09-17 18:47:46,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132354161] [2024-09-17 18:47:46,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:46,737 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-17 18:47:46,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:46,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-17 18:47:46,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-09-17 18:47:46,738 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2024-09-17 18:47:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:49,534 INFO L93 Difference]: Finished difference Result 270 states and 385 transitions. [2024-09-17 18:47:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-17 18:47:49,535 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) Word has length 137 [2024-09-17 18:47:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:49,537 INFO L225 Difference]: With dead ends: 270 [2024-09-17 18:47:49,537 INFO L226 Difference]: Without dead ends: 237 [2024-09-17 18:47:49,538 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2024-09-17 18:47:49,538 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 118 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:49,538 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 544 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-17 18:47:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-09-17 18:47:49,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 227. [2024-09-17 18:47:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 118 states have internal predecessors, (132), 96 states have call successors, (96), 16 states have call predecessors, (96), 15 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2024-09-17 18:47:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 321 transitions. [2024-09-17 18:47:49,642 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 321 transitions. Word has length 137 [2024-09-17 18:47:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:49,643 INFO L474 AbstractCegarLoop]: Abstraction has 227 states and 321 transitions. [2024-09-17 18:47:49,643 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2024-09-17 18:47:49,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 321 transitions. [2024-09-17 18:47:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-17 18:47:49,645 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:49,645 INFO L216 NwaCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:49,662 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-17 18:47:49,849 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-17 18:47:49,850 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:49,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:49,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2038270089, now seen corresponding path program 2 times [2024-09-17 18:47:49,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:49,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601504067] [2024-09-17 18:47:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:49,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:47:49,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441970080] [2024-09-17 18:47:49,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:47:49,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:49,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:49,874 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:49,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-17 18:47:49,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:47:49,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:47:49,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-17 18:47:49,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 84 proven. 56 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-09-17 18:47:50,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 86 proven. 7 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-09-17 18:47:50,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:50,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601504067] [2024-09-17 18:47:50,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:47:50,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441970080] [2024-09-17 18:47:50,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441970080] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:47:50,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:47:50,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 25 [2024-09-17 18:47:50,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358588264] [2024-09-17 18:47:50,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:50,812 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-17 18:47:50,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:50,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-17 18:47:50,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-09-17 18:47:50,813 INFO L87 Difference]: Start difference. First operand 227 states and 321 transitions. Second operand has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-17 18:47:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:52,551 INFO L93 Difference]: Finished difference Result 243 states and 335 transitions. [2024-09-17 18:47:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-17 18:47:52,551 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) Word has length 142 [2024-09-17 18:47:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:52,553 INFO L225 Difference]: With dead ends: 243 [2024-09-17 18:47:52,553 INFO L226 Difference]: Without dead ends: 230 [2024-09-17 18:47:52,554 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2024-09-17 18:47:52,554 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 68 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:52,554 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 447 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-17 18:47:52,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-09-17 18:47:52,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2024-09-17 18:47:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 118 states have (on average 1.11864406779661) internal successors, (132), 119 states have internal predecessors, (132), 93 states have call successors, (93), 18 states have call predecessors, (93), 17 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2024-09-17 18:47:52,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 316 transitions. [2024-09-17 18:47:52,647 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 316 transitions. Word has length 142 [2024-09-17 18:47:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:52,647 INFO L474 AbstractCegarLoop]: Abstraction has 229 states and 316 transitions. [2024-09-17 18:47:52,647 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-17 18:47:52,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 316 transitions. [2024-09-17 18:47:52,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-09-17 18:47:52,649 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:52,650 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:52,665 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-17 18:47:52,853 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-17 18:47:52,853 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:52,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1721913771, now seen corresponding path program 3 times [2024-09-17 18:47:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:52,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854603476] [2024-09-17 18:47:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:47:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:47:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:47:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:47:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:47:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:47:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-17 18:47:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 18:47:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:47:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-17 18:47:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:47:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-17 18:47:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:47:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-17 18:47:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-17 18:47:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-17 18:47:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 18:47:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-17 18:47:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:47:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-17 18:47:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:47:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-17 18:47:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:47:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:47:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-17 18:47:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 54 proven. 51 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-09-17 18:47:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854603476] [2024-09-17 18:47:53,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854603476] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010556160] [2024-09-17 18:47:53,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:47:53,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:53,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:53,167 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:53,170 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-17 18:47:53,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-17 18:47:53,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:47:53,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-17 18:47:53,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 121 proven. 62 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2024-09-17 18:47:53,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:47:54,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010556160] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:54,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:47:54,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 21 [2024-09-17 18:47:54,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108567999] [2024-09-17 18:47:54,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:47:54,800 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-17 18:47:54,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:47:54,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-17 18:47:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2024-09-17 18:47:54,801 INFO L87 Difference]: Start difference. First operand 229 states and 316 transitions. Second operand has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2024-09-17 18:47:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:47:55,842 INFO L93 Difference]: Finished difference Result 339 states and 470 transitions. [2024-09-17 18:47:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-17 18:47:55,842 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) Word has length 145 [2024-09-17 18:47:55,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:47:55,844 INFO L225 Difference]: With dead ends: 339 [2024-09-17 18:47:55,844 INFO L226 Difference]: Without dead ends: 274 [2024-09-17 18:47:55,845 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=266, Invalid=1540, Unknown=0, NotChecked=0, Total=1806 [2024-09-17 18:47:55,846 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 44 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 18:47:55,846 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 551 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 18:47:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-09-17 18:47:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 259. [2024-09-17 18:47:55,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 133 states have (on average 1.112781954887218) internal successors, (148), 134 states have internal predecessors, (148), 105 states have call successors, (105), 21 states have call predecessors, (105), 20 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2024-09-17 18:47:55,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 356 transitions. [2024-09-17 18:47:55,967 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 356 transitions. Word has length 145 [2024-09-17 18:47:55,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:47:55,967 INFO L474 AbstractCegarLoop]: Abstraction has 259 states and 356 transitions. [2024-09-17 18:47:55,968 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2024-09-17 18:47:55,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:55,968 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 356 transitions. [2024-09-17 18:47:55,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-17 18:47:55,969 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:47:55,970 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:47:55,987 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-17 18:47:56,170 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:56,171 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:47:56,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:47:56,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1362351366, now seen corresponding path program 3 times [2024-09-17 18:47:56,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:47:56,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780328951] [2024-09-17 18:47:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:47:56,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:47:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:47:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:47:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:47:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:47:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:47:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:47:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-17 18:47:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 18:47:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:47:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-17 18:47:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:47:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-17 18:47:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-17 18:47:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-17 18:47:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-17 18:47:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-17 18:47:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 18:47:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-17 18:47:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-17 18:47:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-17 18:47:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 18:47:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-17 18:47:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-17 18:47:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-17 18:47:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-17 18:47:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-17 18:47:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-17 18:47:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:47:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 102 proven. 24 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2024-09-17 18:47:56,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:47:56,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780328951] [2024-09-17 18:47:56,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780328951] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:47:56,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689456215] [2024-09-17 18:47:56,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:47:56,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:47:56,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:47:56,550 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:47:56,552 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-17 18:47:56,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-17 18:47:56,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:47:56,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-17 18:47:56,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:47:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 95 proven. 43 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-09-17 18:47:57,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:48:02,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689456215] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:48:02,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:48:02,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 22 [2024-09-17 18:48:02,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011596278] [2024-09-17 18:48:02,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:48:02,113 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-17 18:48:02,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:48:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-17 18:48:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=701, Unknown=1, NotChecked=0, Total=812 [2024-09-17 18:48:02,114 INFO L87 Difference]: Start difference. First operand 259 states and 356 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2024-09-17 18:48:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:48:02,790 INFO L93 Difference]: Finished difference Result 311 states and 415 transitions. [2024-09-17 18:48:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-17 18:48:02,790 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) Word has length 156 [2024-09-17 18:48:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:48:02,792 INFO L225 Difference]: With dead ends: 311 [2024-09-17 18:48:02,792 INFO L226 Difference]: Without dead ends: 173 [2024-09-17 18:48:02,793 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=214, Invalid=1045, Unknown=1, NotChecked=0, Total=1260 [2024-09-17 18:48:02,794 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 45 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-17 18:48:02,795 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 513 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-17 18:48:02,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-17 18:48:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-09-17 18:48:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 92 states have (on average 1.0978260869565217) internal successors, (101), 93 states have internal predecessors, (101), 65 states have call successors, (65), 16 states have call predecessors, (65), 15 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-09-17 18:48:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2024-09-17 18:48:02,893 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 156 [2024-09-17 18:48:02,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:48:02,893 INFO L474 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2024-09-17 18:48:02,894 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2024-09-17 18:48:02,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:48:02,894 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2024-09-17 18:48:02,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-17 18:48:02,896 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:48:02,896 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2024-09-17 18:48:02,911 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-17 18:48:03,096 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:48:03,097 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:48:03,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:48:03,097 INFO L85 PathProgramCache]: Analyzing trace with hash -593551816, now seen corresponding path program 4 times [2024-09-17 18:48:03,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:48:03,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758532015] [2024-09-17 18:48:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:48:03,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:48:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:48:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:48:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:48:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:48:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:48:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-17 18:48:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-17 18:48:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 18:48:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 18:48:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-17 18:48:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-17 18:48:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-17 18:48:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-17 18:48:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-17 18:48:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-17 18:48:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-17 18:48:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-17 18:48:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-17 18:48:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-17 18:48:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-17 18:48:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-17 18:48:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-17 18:48:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-17 18:48:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-17 18:48:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-17 18:48:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-17 18:48:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-17 18:48:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-17 18:48:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-17 18:48:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:48:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-09-17 18:48:03,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:48:03,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758532015] [2024-09-17 18:48:03,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758532015] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:48:03,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944564256] [2024-09-17 18:48:03,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-17 18:48:03,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:48:03,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:48:03,370 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:48:03,371 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-17 18:48:03,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-17 18:48:03,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:48:03,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-17 18:48:03,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:48:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 234 proven. 68 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2024-09-17 18:48:03,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:48:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-09-17 18:48:03,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944564256] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:48:03,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:48:03,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2024-09-17 18:48:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617168746] [2024-09-17 18:48:03,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:48:03,792 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-17 18:48:03,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:48:03,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-17 18:48:03,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-09-17 18:48:03,793 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2024-09-17 18:48:04,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:48:04,112 INFO L93 Difference]: Finished difference Result 177 states and 232 transitions. [2024-09-17 18:48:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-17 18:48:04,113 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) Word has length 170 [2024-09-17 18:48:04,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:48:04,114 INFO L225 Difference]: With dead ends: 177 [2024-09-17 18:48:04,114 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 18:48:04,115 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 389 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-09-17 18:48:04,115 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 22 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:48:04,116 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 541 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:48:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 18:48:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 18:48:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 18:48:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 18:48:04,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2024-09-17 18:48:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:48:04,117 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 18:48:04,117 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2024-09-17 18:48:04,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:48:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 18:48:04,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 18:48:04,120 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 18:48:04,137 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-17 18:48:04,320 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:48:04,323 INFO L408 BasicCegarLoop]: Path program histogram: [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:48:04,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 18:48:08,563 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 18:48:08,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 06:48:08 BoogieIcfgContainer [2024-09-17 18:48:08,598 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 18:48:08,598 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-17 18:48:08,598 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-17 18:48:08,598 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-17 18:48:08,598 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:47:14" (3/4) ... [2024-09-17 18:48:08,600 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-17 18:48:08,646 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-17 18:48:08,646 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-17 18:48:08,647 INFO L158 Benchmark]: Toolchain (without parser) took 54366.59ms. Allocated memory was 151.0MB in the beginning and 337.6MB in the end (delta: 186.6MB). Free memory was 103.5MB in the beginning and 286.0MB in the end (delta: -182.5MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-09-17 18:48:08,647 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 151.0MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:48:08,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.71ms. Allocated memory is still 151.0MB. Free memory was 103.5MB in the beginning and 91.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 18:48:08,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.23ms. Allocated memory is still 151.0MB. Free memory was 90.9MB in the beginning and 90.3MB in the end (delta: 628.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:48:08,648 INFO L158 Benchmark]: Boogie Preprocessor took 31.07ms. Allocated memory is still 151.0MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 18:48:08,648 INFO L158 Benchmark]: RCFGBuilder took 332.79ms. Allocated memory is still 151.0MB. Free memory was 88.2MB in the beginning and 74.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-17 18:48:08,648 INFO L158 Benchmark]: TraceAbstraction took 53643.62ms. Allocated memory was 151.0MB in the beginning and 337.6MB in the end (delta: 186.6MB). Free memory was 73.3MB in the beginning and 289.1MB in the end (delta: -215.8MB). Peak memory consumption was 159.8MB. Max. memory is 16.1GB. [2024-09-17 18:48:08,648 INFO L158 Benchmark]: Witness Printer took 48.50ms. Allocated memory is still 337.6MB. Free memory was 289.1MB in the beginning and 286.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-17 18:48:08,649 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 151.0MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.71ms. Allocated memory is still 151.0MB. Free memory was 103.5MB in the beginning and 91.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.23ms. Allocated memory is still 151.0MB. Free memory was 90.9MB in the beginning and 90.3MB in the end (delta: 628.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.07ms. Allocated memory is still 151.0MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 332.79ms. Allocated memory is still 151.0MB. Free memory was 88.2MB in the beginning and 74.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 53643.62ms. Allocated memory was 151.0MB in the beginning and 337.6MB in the end (delta: 186.6MB). Free memory was 73.3MB in the beginning and 289.1MB in the end (delta: -215.8MB). Peak memory consumption was 159.8MB. Max. memory is 16.1GB. * Witness Printer took 48.50ms. Allocated memory is still 337.6MB. Free memory was 289.1MB in the beginning and 286.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 49.3s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 676 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 581 mSDsluCounter, 6250 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5346 mSDsCounter, 702 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4957 IncrementalHoareTripleChecker+Invalid, 5659 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 702 mSolverCounterUnsat, 904 mSDtfsCounter, 4957 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3482 GetRequests, 3081 SyntacticMatches, 31 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 19.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=18, InterpolantAutomatonStates: 258, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 118 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 30.7s InterpolantComputationTime, 3647 NumberOfCodeBlocks, 3463 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3806 ConstructedInterpolants, 0 QuantifiedInterpolants, 13359 SizeOfPredicates, 52 NumberOfNonLiveVariables, 3793 ConjunctsInSsa, 460 ConjunctsInUnsatCore, 37 InterpolantComputations, 5 PerfectInterpolantSequences, 13865/14731 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: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((((r == 0) && (s == 1)) && (a == ((__int128) c + b))) && (0 <= c)) && (b == y)) && (k == 1)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (x <= 2)) && (p == 1)) || ((((((((((((((r == 0) && (a == (c + ((__int128) b * k)))) && (s == 1)) && (1 <= a)) && (0 <= c)) && (yy == ((long long) y * y))) && ((c + ((__int128) b * 2)) <= 2)) && (q == 0)) && (1 <= b)) && (xy == ((long long) y * x))) && (a == x)) && (x == (c + ((__int128) k * y)))) && (x <= 2)) && (p == 1))) || ((((((((((((((r == 0) && (y <= 2)) && (k == 0)) && (s == 1)) && (1 <= a)) && (b == y)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (c == x)) && (x <= 2)) && (p == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (k == 0)) && (2 == xy)) && (r == 1)) && (c == 2)) && (x == 1)) && (yy == 4)) && (a == 2)) && (q == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (2 == xy)) && (r == 1)) && (x == 1)) && (yy == 4)) && (k == 1)) && (a == 2)) && (q == 1)) && (c == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (2 == xy)) && (r == 1)) && (x == 1)) && (yy == 4)) && (k == 2)) && (a == 2)) && (c == 0)) && (q == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((b == 1) && (s == 0)) && (p == 0)) && (y == xy)) && (r == 1)) && (a == y)) && (x == 1)) && (yy == ((long long) y * y))) && (a == 2)) && (q == 1)) || (((((((((1 <= x) && (y <= 2)) && (b == 0)) && (p == 0)) && (r == 1)) && (a == y)) && (1 <= y)) && ((((__int128) q * x) + ((__int128) y * s)) == 0)) && (x <= 2))) || ((((((((((((r == 0) && (y <= 2)) && (s == 1)) && (1 <= a)) && (b == y)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (x <= 2)) && (p == 1))) || (((((((((((long long) x + 1) <= y) && (r == 0)) && (((__int128) ((long long) x * 2) + b) == y)) && (y <= 2)) && (s == 1)) && (((__int128) q + 2) == 0)) && (((__int128) b + 1) <= x)) && (a == x)) && (p == 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-17 18:48:08,690 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