./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound5.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 e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/ps5-ll_valuebound5.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 e14135f4afb726bf8552a88de51bf2d1eeb5945775070b599f71e8288a74bc87 --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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:06:32,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:06:33,021 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 15:06:33,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:06:33,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:06:33,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:06:33,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:06:33,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:06:33,065 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:06:33,065 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:06:33,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 15:06:33,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 15:06:33,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:06:33,067 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:06:33,067 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:06:33,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:06:33,068 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:06:33,068 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:06:33,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:06:33,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:06:33,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:06:33,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:06:33,074 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:06:33,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:06:33,074 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:06:33,074 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:06:33,075 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:06:33,075 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:06:33,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:06:33,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:06:33,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:06:33,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:06:33,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:06:33,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 15:06:33,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 15:06:33,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 15:06:33,080 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 15:06:33,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 15:06:33,080 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 15:06:33,080 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 15:06:33,081 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 15:06:33,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 15:06:33,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e14135f4afb726bf8552a88de51bf2d1eeb5945775070b599f71e8288a74bc87 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 15:06:33,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:06:33,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:06:33,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:06:33,370 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:06:33,370 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:06:33,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound5.c [2024-10-15 15:06:34,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:06:34,960 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:06:34,960 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound5.c [2024-10-15 15:06:34,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3245e7384/c8f93b7e32fb454ab7cdc8248b69aa5f/FLAG5368210a8 [2024-10-15 15:06:34,977 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3245e7384/c8f93b7e32fb454ab7cdc8248b69aa5f [2024-10-15 15:06:34,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:06:34,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 15:06:34,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:06:34,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:06:34,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:06:34,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:34" (1/1) ... [2024-10-15 15:06:34,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a3a9d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:34, skipping insertion in model container [2024-10-15 15:06:34,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:34" (1/1) ... [2024-10-15 15:06:35,006 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:06:35,153 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/ps5-ll_valuebound5.c[458,471] [2024-10-15 15:06:35,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:06:35,175 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 15:06:35,186 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/ps5-ll_valuebound5.c[458,471] [2024-10-15 15:06:35,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:06:35,207 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:06:35,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35 WrapperNode [2024-10-15 15:06:35,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:06:35,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:06:35,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:06:35,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:06:35,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,231 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:06:35,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:06:35,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:06:35,232 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:06:35,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:06:35,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,253 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]. [2024-10-15 15:06:35,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:06:35,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:06:35,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:06:35,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:06:35,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (1/1) ... [2024-10-15 15:06:35,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:06:35,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:35,302 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) [2024-10-15 15:06:35,309 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 [2024-10-15 15:06:35,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:06:35,345 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-15 15:06:35,345 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-15 15:06:35,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:06:35,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:06:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 15:06:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:06:35,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:06:35,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:06:35,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:06:35,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 15:06:35,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 15:06:35,399 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:06:35,401 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:06:35,576 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-15 15:06:35,577 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:06:35,599 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:06:35,603 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 15:06:35,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:35 BoogieIcfgContainer [2024-10-15 15:06:35,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:06:35,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 15:06:35,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 15:06:35,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 15:06:35,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:34" (1/3) ... [2024-10-15 15:06:35,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b88ff82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:35, skipping insertion in model container [2024-10-15 15:06:35,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:35" (2/3) ... [2024-10-15 15:06:35,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b88ff82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:35, skipping insertion in model container [2024-10-15 15:06:35,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:35" (3/3) ... [2024-10-15 15:06:35,615 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound5.c [2024-10-15 15:06:35,629 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 15:06:35,629 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 15:06:35,671 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 15:06:35,676 INFO L333 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;@6cc9d066, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 15:06:35,676 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 15:06:35,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 15:06:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-15 15:06:35,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:35,685 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:35,686 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:35,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-10-15 15:06:35,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:35,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744916911] [2024-10-15 15:06:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:35,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:35,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:06:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:35,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:06:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:35,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:06:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:06:35,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:35,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744916911] [2024-10-15 15:06:35,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744916911] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:06:35,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:06:35,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 15:06:35,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530353957] [2024-10-15 15:06:35,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:06:35,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-15 15:06:35,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:06:35,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-15 15:06:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 15:06:35,920 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 15:06:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:06:35,948 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-10-15 15:06:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 15:06:35,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-10-15 15:06:35,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:06:35,958 INFO L225 Difference]: With dead ends: 48 [2024-10-15 15:06:35,958 INFO L226 Difference]: Without dead ends: 23 [2024-10-15 15:06:35,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 15:06:35,965 INFO L432 NwaCegarLoop]: 28 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, 28 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 [2024-10-15 15:06:35,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:06:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-15 15:06:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-15 15:06:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 15:06:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-10-15 15:06:36,006 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-10-15 15:06:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:06:36,006 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-10-15 15:06:36,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 15:06:36,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-10-15 15:06:36,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-15 15:06:36,011 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:36,011 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:36,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 15:06:36,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:36,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:36,013 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-10-15 15:06:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278239779] [2024-10-15 15:06:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:06:36,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862465122] [2024-10-15 15:06:36,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:36,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:36,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:36,055 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) [2024-10-15 15:06:36,057 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 15:06:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:36,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 15:06:36,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:06:36,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:06:36,229 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 15:06:36,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:36,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278239779] [2024-10-15 15:06:36,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:06:36,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862465122] [2024-10-15 15:06:36,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862465122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:06:36,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:06:36,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:06:36,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467967319] [2024-10-15 15:06:36,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:06:36,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:06:36,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:06:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:06:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:06:36,233 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-15 15:06:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:06:36,310 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-10-15 15:06:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:06:36,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-10-15 15:06:36,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:06:36,312 INFO L225 Difference]: With dead ends: 34 [2024-10-15 15:06:36,312 INFO L226 Difference]: Without dead ends: 30 [2024-10-15 15:06:36,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 15:06:36,314 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:06:36,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:06:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-15 15:06:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-15 15:06:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 15:06:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-10-15 15:06:36,342 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-10-15 15:06:36,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:06:36,343 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-10-15 15:06:36,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-15 15:06:36,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:36,343 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-10-15 15:06:36,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-15 15:06:36,345 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:36,345 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:36,361 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 15:06:36,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:36,546 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:36,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-10-15 15:06:36,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:36,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798603207] [2024-10-15 15:06:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:36,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:06:36,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591276082] [2024-10-15 15:06:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:36,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:36,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:36,592 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) [2024-10-15 15:06:36,596 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 15:06:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:36,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 15:06:36,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:06:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:06:36,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:06:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:06:36,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798603207] [2024-10-15 15:06:36,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:06:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591276082] [2024-10-15 15:06:36,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591276082] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 15:06:36,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 15:06:36,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-15 15:06:36,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828666266] [2024-10-15 15:06:36,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:06:36,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:06:36,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:06:36,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:06:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 15:06:36,868 INFO L87 Difference]: Start difference. First operand 30 states and 33 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-15 15:06:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:06:36,920 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-10-15 15:06:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:06:36,920 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-10-15 15:06:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:06:36,921 INFO L225 Difference]: With dead ends: 36 [2024-10-15 15:06:36,922 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 15:06:36,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 15:06:36,923 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 15:06:36,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:06:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 15:06:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-15 15:06:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 15:06:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-10-15 15:06:36,935 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-10-15 15:06:36,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:06:36,935 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-10-15 15:06:36,936 INFO L472 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-15 15:06:36,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-10-15 15:06:36,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-15 15:06:36,937 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:36,937 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:36,957 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 15:06:37,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:37,142 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:37,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:37,142 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-10-15 15:06:37,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:37,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287192451] [2024-10-15 15:06:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:37,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:06:37,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186149399] [2024-10-15 15:06:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:37,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:37,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:37,175 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) [2024-10-15 15:06:37,177 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 15:06:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:37,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 15:06:37,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:06:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-15 15:06:37,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:06:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-15 15:06:37,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287192451] [2024-10-15 15:06:37,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:06:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186149399] [2024-10-15 15:06:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186149399] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:06:37,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 15:06:37,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-10-15 15:06:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192358394] [2024-10-15 15:06:37,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 15:06:37,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 15:06:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:06:37,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 15:06:37,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-15 15:06:37,468 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-15 15:06:37,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:06:37,600 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-10-15 15:06:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 15:06:37,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-10-15 15:06:37,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:06:37,602 INFO L225 Difference]: With dead ends: 49 [2024-10-15 15:06:37,602 INFO L226 Difference]: Without dead ends: 41 [2024-10-15 15:06:37,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-15 15:06:37,604 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:06:37,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 135 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:06:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-15 15:06:37,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-15 15:06:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 15:06:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-10-15 15:06:37,636 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 39 [2024-10-15 15:06:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:06:37,636 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-10-15 15:06:37,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-15 15:06:37,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-10-15 15:06:37,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-15 15:06:37,638 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:37,639 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:37,656 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 15:06:37,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:37,844 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:37,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-10-15 15:06:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:37,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273643351] [2024-10-15 15:06:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:37,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:06:37,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467852413] [2024-10-15 15:06:37,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:06:37,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:37,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:37,912 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) [2024-10-15 15:06:37,913 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 15:06:37,994 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:06:37,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:06:37,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-15 15:06:38,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:06:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-15 15:06:38,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:06:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-15 15:06:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273643351] [2024-10-15 15:06:38,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:06:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467852413] [2024-10-15 15:06:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467852413] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:06:38,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 15:06:38,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-10-15 15:06:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867652667] [2024-10-15 15:06:38,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 15:06:38,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 15:06:38,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:06:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 15:06:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-10-15 15:06:38,595 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 21 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-10-15 15:06:39,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:06:39,133 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2024-10-15 15:06:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 15:06:39,134 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) Word has length 60 [2024-10-15 15:06:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:06:39,136 INFO L225 Difference]: With dead ends: 66 [2024-10-15 15:06:39,137 INFO L226 Difference]: Without dead ends: 58 [2024-10-15 15:06:39,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2024-10-15 15:06:39,139 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:06:39,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 387 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:06:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-15 15:06:39,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-10-15 15:06:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 16 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 15:06:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-10-15 15:06:39,173 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 60 [2024-10-15 15:06:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:06:39,174 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-10-15 15:06:39,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-10-15 15:06:39,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:39,174 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-10-15 15:06:39,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-15 15:06:39,177 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:39,177 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:39,194 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 15:06:39,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:39,382 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:39,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:39,382 INFO L85 PathProgramCache]: Analyzing trace with hash -235169010, now seen corresponding path program 3 times [2024-10-15 15:06:39,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:39,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16416821] [2024-10-15 15:06:39,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:39,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:39,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:06:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:39,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:06:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:39,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:06:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:39,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 15:06:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:39,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 15:06:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:39,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 15:06:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:39,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 15:06:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:40,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 15:06:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:40,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 15:06:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:40,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 15:06:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:40,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 15:06:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:40,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 15:06:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:40,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 15:06:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:40,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 15:06:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 133 proven. 27 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-10-15 15:06:40,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:40,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16416821] [2024-10-15 15:06:40,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16416821] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:06:40,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208103170] [2024-10-15 15:06:40,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 15:06:40,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:40,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:40,051 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) [2024-10-15 15:06:40,053 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process