./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound50.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --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/hard-u_valuebound50.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64261cdf4de80f70fe2d4ad7338f6b0821a851ad9c048667535af1ece80ec49c --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 19:03:16,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:03:16,915 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:03:16,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:03:16,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:03:16,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:03:16,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:03:16,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:03:16,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:03:16,947 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:03:16,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:03:16,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:03:16,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:03:16,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:03:16,949 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:03:16,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:03:16,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:03:16,950 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:03:16,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:03:16,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:03:16,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:03:16,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:03:16,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:03:16,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:03:16,956 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:03:16,956 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:03:16,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:03:16,957 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:03:16,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:03:16,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:03:16,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:03:16,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:03:16,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:03:16,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:03:16,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:03:16,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:03:16,962 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:03:16,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:03:16,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:03:16,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:03:16,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:03:16,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:03:16,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64261cdf4de80f70fe2d4ad7338f6b0821a851ad9c048667535af1ece80ec49c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 19:03:17,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:03:17,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:03:17,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:03:17,229 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:03:17,229 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:03:17,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound50.c [2024-09-17 19:03:18,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:03:18,781 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:03:18,781 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound50.c [2024-09-17 19:03:18,787 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f530b8871/42bb5cdab3024c518c6a24f200592644/FLAG54369a881 [2024-09-17 19:03:19,185 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f530b8871/42bb5cdab3024c518c6a24f200592644 [2024-09-17 19:03:19,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:03:19,189 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 19:03:19,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:03:19,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:03:19,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:03:19,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bdf9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19, skipping insertion in model container [2024-09-17 19:03:19,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,218 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:03:19,353 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/hard-u_valuebound50.c[537,550] [2024-09-17 19:03:19,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:03:19,392 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 19:03:19,406 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/hard-u_valuebound50.c[537,550] [2024-09-17 19:03:19,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:03:19,438 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:03:19,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19 WrapperNode [2024-09-17 19:03:19,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:03:19,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:03:19,440 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:03:19,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:03:19,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,461 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 19:03:19,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:03:19,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:03:19,462 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:03:19,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:03:19,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,478 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,497 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 19:03:19,498 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,498 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,505 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:03:19,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:03:19,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:03:19,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:03:19,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (1/1) ... [2024-09-17 19:03:19,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:03:19,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:19,554 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 19:03:19,557 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 19:03:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:03:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 19:03:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 19:03:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 19:03:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 19:03:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:03:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 19:03:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 19:03:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:03:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:03:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 19:03:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 19:03:19,658 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:03:19,659 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:03:19,822 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-17 19:03:19,822 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:03:19,846 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:03:19,847 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-17 19:03:19,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:03:19 BoogieIcfgContainer [2024-09-17 19:03:19,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:03:19,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:03:19,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:03:19,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:03:19,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:03:19" (1/3) ... [2024-09-17 19:03:19,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b025b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:03:19, skipping insertion in model container [2024-09-17 19:03:19,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:19" (2/3) ... [2024-09-17 19:03:19,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b025b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:03:19, skipping insertion in model container [2024-09-17 19:03:19,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:03:19" (3/3) ... [2024-09-17 19:03:19,857 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound50.c [2024-09-17 19:03:19,873 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:03:19,873 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 19:03:19,917 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:03:19,923 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;@2b6b7b66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:03:19,923 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 19:03:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-17 19:03:19,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-17 19:03:19,933 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:19,934 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:19,934 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:19,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash 367441184, now seen corresponding path program 1 times [2024-09-17 19:03:19,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:19,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855956130] [2024-09-17 19:03:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:19,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:20,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:20,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:20,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 19:03:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:20,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 19:03:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 19:03:20,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855956130] [2024-09-17 19:03:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855956130] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:20,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:20,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:03:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485234526] [2024-09-17 19:03:20,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:20,117 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 19:03:20,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:20,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 19:03:20,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:03:20,136 INFO L87 Difference]: Start difference. First operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:03:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:20,167 INFO L93 Difference]: Finished difference Result 66 states and 107 transitions. [2024-09-17 19:03:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 19:03:20,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-17 19:03:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:20,180 INFO L225 Difference]: With dead ends: 66 [2024-09-17 19:03:20,180 INFO L226 Difference]: Without dead ends: 32 [2024-09-17 19:03:20,182 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:03:20,185 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:20,186 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-17 19:03:20,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-17 19:03:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 19:03:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-09-17 19:03:20,223 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 27 [2024-09-17 19:03:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:20,224 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-09-17 19:03:20,224 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:03:20,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:20,225 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-09-17 19:03:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-17 19:03:20,226 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:20,226 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:20,226 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:03:20,227 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:20,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:20,227 INFO L85 PathProgramCache]: Analyzing trace with hash -781266146, now seen corresponding path program 1 times [2024-09-17 19:03:20,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:20,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300445976] [2024-09-17 19:03:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:20,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:20,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:20,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:20,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 19:03:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:20,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 19:03:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 19:03:20,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:20,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300445976] [2024-09-17 19:03:20,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300445976] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:20,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:20,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:20,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705767688] [2024-09-17 19:03:20,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:20,575 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:20,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:20,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:20,576 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:03:20,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:20,656 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2024-09-17 19:03:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:20,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-17 19:03:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:20,659 INFO L225 Difference]: With dead ends: 45 [2024-09-17 19:03:20,659 INFO L226 Difference]: Without dead ends: 43 [2024-09-17 19:03:20,660 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:20,661 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:20,663 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 134 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-17 19:03:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2024-09-17 19:03:20,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 19:03:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-09-17 19:03:20,683 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 27 [2024-09-17 19:03:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:20,683 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-09-17 19:03:20,683 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-17 19:03:20,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:20,685 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-09-17 19:03:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-17 19:03:20,686 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:20,686 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:20,687 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 19:03:20,688 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:20,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:20,688 INFO L85 PathProgramCache]: Analyzing trace with hash 992341126, now seen corresponding path program 1 times [2024-09-17 19:03:20,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:20,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23061495] [2024-09-17 19:03:20,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:20,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:21,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:21,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:21,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 19:03:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:21,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 19:03:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:21,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:03:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 19:03:21,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:21,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23061495] [2024-09-17 19:03:21,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23061495] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:21,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:21,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:21,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584423752] [2024-09-17 19:03:21,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:21,098 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:21,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:21,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:21,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:21,100 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:03:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:21,235 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-09-17 19:03:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:21,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-17 19:03:21,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:21,237 INFO L225 Difference]: With dead ends: 49 [2024-09-17 19:03:21,237 INFO L226 Difference]: Without dead ends: 47 [2024-09-17 19:03:21,237 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:21,238 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:21,239 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 131 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:03:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-17 19:03:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-17 19:03:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 19:03:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-09-17 19:03:21,259 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 32 [2024-09-17 19:03:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:21,260 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-09-17 19:03:21,261 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:03:21,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:21,261 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-09-17 19:03:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-17 19:03:21,262 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:21,263 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:21,263 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-17 19:03:21,263 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:21,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:21,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1500804130, now seen corresponding path program 1 times [2024-09-17 19:03:21,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:21,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93045778] [2024-09-17 19:03:21,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:21,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:21,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017584965] [2024-09-17 19:03:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:21,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:21,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:21,302 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 19:03:21,304 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 19:03:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:21,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-17 19:03:21,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-17 19:03:21,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:03:21,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:21,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93045778] [2024-09-17 19:03:21,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:21,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017584965] [2024-09-17 19:03:21,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017584965] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:21,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:21,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-17 19:03:21,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347305704] [2024-09-17 19:03:21,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:21,621 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-17 19:03:21,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-17 19:03:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-09-17 19:03:21,625 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-17 19:03:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:21,927 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2024-09-17 19:03:21,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 19:03:21,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2024-09-17 19:03:21,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:21,929 INFO L225 Difference]: With dead ends: 66 [2024-09-17 19:03:21,929 INFO L226 Difference]: Without dead ends: 53 [2024-09-17 19:03:21,930 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-09-17 19:03:21,931 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 25 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:21,934 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 183 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 19:03:21,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-17 19:03:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-09-17 19:03:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-17 19:03:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2024-09-17 19:03:21,960 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 37 [2024-09-17 19:03:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:21,960 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2024-09-17 19:03:21,960 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-17 19:03:21,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2024-09-17 19:03:21,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-17 19:03:21,962 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:21,963 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:21,980 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 19:03:22,167 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:22,168 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:22,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1357220557, now seen corresponding path program 1 times [2024-09-17 19:03:22,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:22,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436486749] [2024-09-17 19:03:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:22,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:22,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123571321] [2024-09-17 19:03:22,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:22,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:22,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:22,197 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 19:03:22,200 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 19:03:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:22,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-17 19:03:22,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 19:03:22,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:03:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-17 19:03:23,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436486749] [2024-09-17 19:03:23,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123571321] [2024-09-17 19:03:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123571321] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:03:23,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:03:23,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2024-09-17 19:03:23,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400425158] [2024-09-17 19:03:23,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:03:23,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-17 19:03:23,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:23,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-17 19:03:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-09-17 19:03:23,481 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-17 19:03:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:24,326 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-09-17 19:03:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-17 19:03:24,327 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 44 [2024-09-17 19:03:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:24,330 INFO L225 Difference]: With dead ends: 71 [2024-09-17 19:03:24,331 INFO L226 Difference]: Without dead ends: 63 [2024-09-17 19:03:24,331 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2024-09-17 19:03:24,333 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:24,334 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 188 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-17 19:03:24,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-17 19:03:24,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-17 19:03:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 39 states have internal predecessors, (41), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-17 19:03:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2024-09-17 19:03:24,355 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 44 [2024-09-17 19:03:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:24,356 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2024-09-17 19:03:24,356 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-17 19:03:24,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:24,358 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2024-09-17 19:03:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-17 19:03:24,360 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:24,360 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:24,377 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 19:03:24,564 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:24,565 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:24,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:24,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1728018148, now seen corresponding path program 1 times [2024-09-17 19:03:24,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:24,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618107319] [2024-09-17 19:03:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:24,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:24,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024863039] [2024-09-17 19:03:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:24,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:24,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:24,611 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 19:03:24,612 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 19:03:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:24,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-17 19:03:24,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-17 19:03:24,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:03:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-17 19:03:24,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:24,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618107319] [2024-09-17 19:03:24,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:24,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024863039] [2024-09-17 19:03:24,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024863039] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-17 19:03:24,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:03:24,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-09-17 19:03:24,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063528728] [2024-09-17 19:03:24,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:24,924 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 19:03:24,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:24,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 19:03:24,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:03:24,925 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-17 19:03:27,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 19:03:27,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:27,306 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-09-17 19:03:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:27,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2024-09-17 19:03:27,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:27,308 INFO L225 Difference]: With dead ends: 73 [2024-09-17 19:03:27,308 INFO L226 Difference]: Without dead ends: 71 [2024-09-17 19:03:27,308 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-17 19:03:27,309 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:27,309 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 125 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-09-17 19:03:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-17 19:03:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-09-17 19:03:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 44 states have internal predecessors, (45), 18 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 19:03:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2024-09-17 19:03:27,325 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 54 [2024-09-17 19:03:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:27,325 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2024-09-17 19:03:27,326 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-17 19:03:27,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:27,326 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2024-09-17 19:03:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-17 19:03:27,327 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:27,327 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 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, 1, 1, 1] [2024-09-17 19:03:27,334 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 19:03:27,528 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 19:03:27,529 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:27,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:27,529 INFO L85 PathProgramCache]: Analyzing trace with hash -752924724, now seen corresponding path program 1 times [2024-09-17 19:03:27,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:27,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663694072] [2024-09-17 19:03:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:27,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 19:03:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 19:03:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-17 19:03:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-17 19:03:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-17 19:03:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 19:03:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-17 19:03:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-17 19:03:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-17 19:03:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-17 19:03:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,670 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-17 19:03:27,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:27,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663694072] [2024-09-17 19:03:27,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663694072] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:03:27,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404182789] [2024-09-17 19:03:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:27,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:27,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:27,673 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 19:03:27,675 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 19:03:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:27,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-17 19:03:27,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-09-17 19:03:27,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:03:27,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404182789] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:03:27,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:03:27,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 10 [2024-09-17 19:03:27,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267087583] [2024-09-17 19:03:27,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:03:27,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-17 19:03:27,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:27,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-17 19:03:27,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-17 19:03:27,899 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-17 19:03:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:28,134 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2024-09-17 19:03:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 19:03:28,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 72 [2024-09-17 19:03:28,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:28,136 INFO L225 Difference]: With dead ends: 102 [2024-09-17 19:03:28,137 INFO L226 Difference]: Without dead ends: 94 [2024-09-17 19:03:28,138 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-09-17 19:03:28,138 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:28,139 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 232 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:03:28,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-17 19:03:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2024-09-17 19:03:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 58 states have internal predecessors, (61), 26 states have call successors, (26), 13 states have call predecessors, (26), 12 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-17 19:03:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2024-09-17 19:03:28,165 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 72 [2024-09-17 19:03:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:28,165 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2024-09-17 19:03:28,165 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-17 19:03:28,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2024-09-17 19:03:28,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-17 19:03:28,167 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:28,167 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:28,186 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 19:03:28,371 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:28,372 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:28,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1452252536, now seen corresponding path program 1 times [2024-09-17 19:03:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:28,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076361756] [2024-09-17 19:03:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:28,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:28,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761949972] [2024-09-17 19:03:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:28,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:28,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:28,412 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 19:03:28,413 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 19:03:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:28,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-17 19:03:28,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 54 proven. 23 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-17 19:03:29,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:04:14,806 WARN L293 SmtUtils]: Spent 16.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:04:26,966 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_main_~d~0 4294967296))) (let ((.cse0 (mod c_main_~A~0 4294967296)) (.cse3 (div .cse2 2)) (.cse1 (* c_main_~q~0 c_main_~B~0)) (.cse4 (mod c_main_~p~0 4294967296))) (or (not (= .cse0 (mod (+ c_main_~r~0 .cse1) 4294967296))) (not (= (mod (* c_main_~p~0 c_main_~B~0) 4294967296) .cse2)) (< (mod c_main_~r~0 4294967296) .cse3) (= .cse4 1) (= .cse0 (mod (+ (* 4294967295 .cse3) c_main_~r~0 .cse1 (* c_main_~B~0 (div .cse4 2))) 4294967296))))) is different from true [2024-09-17 19:04:35,423 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:04:51,438 WARN L293 SmtUtils]: Spent 16.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:05:19,762 WARN L293 SmtUtils]: Spent 16.05s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:05:27,806 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:05:33,049 WARN L293 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:05:57,084 WARN L293 SmtUtils]: Spent 24.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:06:13,136 WARN L293 SmtUtils]: Spent 16.05s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:06:17,149 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_main_~d~0 4294967296))) (let ((.cse0 (mod c_main_~A~0 4294967296)) (.cse4 (div .cse2 2)) (.cse1 (* c_main_~q~0 c_main_~B~0)) (.cse5 (mod c_main_~p~0 4294967296)) (.cse3 (mod c_main_~r~0 4294967296))) (or (not (= .cse0 (mod (+ c_main_~r~0 .cse1) 4294967296))) (not (= (mod (* c_main_~p~0 c_main_~B~0) 4294967296) .cse2)) (< .cse3 .cse4) (= .cse5 1) (= .cse0 (mod (+ (* 4294967295 .cse4) c_main_~r~0 .cse1 (* c_main_~B~0 (div .cse5 2))) 4294967296)) (< .cse2 (+ 1 .cse3))))) is different from true [2024-09-17 19:06:32,829 WARN L293 SmtUtils]: Spent 14.89s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:06:49,253 WARN L293 SmtUtils]: Spent 16.17s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:07:08,914 WARN L293 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:07:16,958 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:07:32,983 WARN L293 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:07:49,003 WARN L293 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)