./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_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 f1d7dc9d 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/freire1_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 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 --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-f1d7dc9-m [2024-09-20 12:37:38,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 12:37:38,349 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 12:37:38,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 12:37:38,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 12:37:38,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 12:37:38,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 12:37:38,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 12:37:38,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 12:37:38,413 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 12:37:38,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 12:37:38,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 12:37:38,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 12:37:38,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 12:37:38,417 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 12:37:38,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 12:37:38,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 12:37:38,418 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 12:37:38,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 12:37:38,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 12:37:38,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 12:37:38,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 12:37:38,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 12:37:38,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 12:37:38,420 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 12:37:38,420 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 12:37:38,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 12:37:38,421 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 12:37:38,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 12:37:38,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 12:37:38,421 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 12:37:38,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 12:37:38,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:37:38,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 12:37:38,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 12:37:38,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 12:37:38,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 12:37:38,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 12:37:38,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 12:37:38,424 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 12:37:38,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 12:37:38,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 12:37:38,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 12:37:38,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 12:37:38,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 12:37:38,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 12:37:38,687 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 12:37:38,688 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 12:37:38,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2024-09-20 12:37:40,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 12:37:40,270 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 12:37:40,271 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2024-09-20 12:37:40,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/be56f4dbb/4b19502aeb8b42cb9afc276a3dacc929/FLAG32e9aa4d6 [2024-09-20 12:37:40,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/be56f4dbb/4b19502aeb8b42cb9afc276a3dacc929 [2024-09-20 12:37:40,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 12:37:40,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 12:37:40,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 12:37:40,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 12:37:40,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 12:37:40,297 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35bd97b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40, skipping insertion in model container [2024-09-20 12:37:40,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,317 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 12:37:40,454 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/freire1_valuebound50.c[712,725] [2024-09-20 12:37:40,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:37:40,492 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 12:37:40,509 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/freire1_valuebound50.c[712,725] [2024-09-20 12:37:40,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:37:40,530 INFO L204 MainTranslator]: Completed translation [2024-09-20 12:37:40,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40 WrapperNode [2024-09-20 12:37:40,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 12:37:40,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 12:37:40,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 12:37:40,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 12:37:40,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,552 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 12:37:40,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 12:37:40,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 12:37:40,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 12:37:40,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 12:37:40,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,579 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]. [2024-09-20 12:37:40,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 12:37:40,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 12:37:40,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 12:37:40,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 12:37:40,598 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (1/1) ... [2024-09-20 12:37:40,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:37:40,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:37:40,636 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) [2024-09-20 12:37:40,642 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 [2024-09-20 12:37:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 12:37:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 12:37:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 12:37:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 12:37:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 12:37:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 12:37:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 12:37:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 12:37:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 12:37:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 12:37:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 12:37:40,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 12:37:40,757 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 12:37:40,760 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 12:37:40,901 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-20 12:37:40,902 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 12:37:40,928 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 12:37:40,928 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 12:37:40,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:37:40 BoogieIcfgContainer [2024-09-20 12:37:40,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 12:37:40,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 12:37:40,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 12:37:40,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 12:37:40,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:37:40" (1/3) ... [2024-09-20 12:37:40,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1758063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:37:40, skipping insertion in model container [2024-09-20 12:37:40,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:40" (2/3) ... [2024-09-20 12:37:40,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1758063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:37:40, skipping insertion in model container [2024-09-20 12:37:40,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:37:40" (3/3) ... [2024-09-20 12:37:40,938 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound50.c [2024-09-20 12:37:40,955 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 12:37:40,955 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 12:37:41,010 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 12:37:41,015 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;@21b05d21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 12:37:41,016 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 12:37:41,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 12:37:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 12:37:41,027 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:37:41,028 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:37:41,029 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:37:41,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:37:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1065431329, now seen corresponding path program 1 times [2024-09-20 12:37:41,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:37:41,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963434336] [2024-09-20 12:37:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:37:41,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:37:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:37:41,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:37:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:37:41,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:37:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:37:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:37:41,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:37:41,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963434336] [2024-09-20 12:37:41,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963434336] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:37:41,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:37:41,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 12:37:41,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869301414] [2024-09-20 12:37:41,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:37:41,210 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 12:37:41,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:37:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 12:37:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:37:41,238 INFO L87 Difference]: Start difference. First operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:37:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:37:41,258 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-09-20 12:37:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 12:37:41,260 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 12:37:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:37:41,265 INFO L225 Difference]: With dead ends: 42 [2024-09-20 12:37:41,265 INFO L226 Difference]: Without dead ends: 21 [2024-09-20 12:37:41,268 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:37:41,270 INFO L434 NwaCegarLoop]: 24 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, 24 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 [2024-09-20 12:37:41,271 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:37:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-20 12:37:41,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-20 12:37:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 12:37:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-20 12:37:41,299 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2024-09-20 12:37:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:37:41,299 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-20 12:37:41,300 INFO L475 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:37:41,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:37:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-20 12:37:41,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 12:37:41,301 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:37:41,301 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:37:41,302 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 12:37:41,302 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:37:41,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:37:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash -392820709, now seen corresponding path program 1 times [2024-09-20 12:37:41,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:37:41,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638457741] [2024-09-20 12:37:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:37:41,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:37:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-20 12:37:41,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-20 12:37:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-20 12:37:41,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-20 12:37:41,364 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-20 12:37:41,365 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 12:37:41,367 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 12:37:41,369 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1] [2024-09-20 12:37:41,381 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 12:37:41,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:37:41 BoogieIcfgContainer [2024-09-20 12:37:41,384 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 12:37:41,385 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 12:37:41,385 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 12:37:41,385 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 12:37:41,386 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:37:40" (3/4) ... [2024-09-20 12:37:41,388 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-09-20 12:37:41,389 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 12:37:41,390 INFO L158 Benchmark]: Toolchain (without parser) took 1099.65ms. Allocated memory is still 157.3MB. Free memory was 106.9MB in the beginning and 53.9MB in the end (delta: 53.1MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-09-20 12:37:41,390 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 157.3MB. Free memory is still 122.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 12:37:41,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.79ms. Allocated memory is still 157.3MB. Free memory was 106.9MB in the beginning and 94.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 12:37:41,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.52ms. Allocated memory is still 157.3MB. Free memory was 94.3MB in the beginning and 93.3MB in the end (delta: 914.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:37:41,392 INFO L158 Benchmark]: Boogie Preprocessor took 39.84ms. Allocated memory is still 157.3MB. Free memory was 93.3MB in the beginning and 91.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:37:41,393 INFO L158 Benchmark]: RCFGBuilder took 335.43ms. Allocated memory is still 157.3MB. Free memory was 91.6MB in the beginning and 79.6MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 12:37:41,394 INFO L158 Benchmark]: TraceAbstraction took 452.75ms. Allocated memory is still 157.3MB. Free memory was 79.0MB in the beginning and 54.2MB in the end (delta: 24.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-09-20 12:37:41,394 INFO L158 Benchmark]: Witness Printer took 3.88ms. Allocated memory is still 157.3MB. Free memory was 54.2MB in the beginning and 53.9MB in the end (delta: 360.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 12:37:41,397 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 157.3MB. Free memory is still 122.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.79ms. Allocated memory is still 157.3MB. Free memory was 106.9MB in the beginning and 94.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.52ms. Allocated memory is still 157.3MB. Free memory was 94.3MB in the beginning and 93.3MB in the end (delta: 914.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.84ms. Allocated memory is still 157.3MB. Free memory was 93.3MB in the beginning and 91.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 335.43ms. Allocated memory is still 157.3MB. Free memory was 91.6MB in the beginning and 79.6MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 452.75ms. Allocated memory is still 157.3MB. Free memory was 79.0MB in the beginning and 54.2MB in the end (delta: 24.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.88ms. Allocated memory is still 157.3MB. Free memory was 54.2MB in the beginning and 53.9MB in the end (delta: 360.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=50) VAL [\old(cond)=1] [L14] COND FALSE !(!cond) VAL [\old(cond)=1] [L28] RET assume_abort_if_not(a>=0 && a<=50) [L29] x = a / 2.0 [L30] r = 0 VAL [r=0] [L32] COND TRUE 1 VAL [r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0] [L19] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-09-20 12:37:41,424 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/freire1_valuebound50.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.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 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 --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-f1d7dc9-m [2024-09-20 12:37:43,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 12:37:43,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-20 12:37:43,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 12:37:43,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 12:37:43,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 12:37:43,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 12:37:43,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 12:37:43,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 12:37:43,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 12:37:43,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 12:37:43,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 12:37:43,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 12:37:43,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 12:37:43,686 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 12:37:43,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 12:37:43,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 12:37:43,687 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 12:37:43,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 12:37:43,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 12:37:43,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 12:37:43,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 12:37:43,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 12:37:43,689 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-20 12:37:43,689 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-20 12:37:43,690 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 12:37:43,690 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-20 12:37:43,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 12:37:43,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 12:37:43,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 12:37:43,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 12:37:43,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 12:37:43,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 12:37:43,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 12:37:43,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:37:43,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 12:37:43,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 12:37:43,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 12:37:43,694 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-20 12:37:43,694 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-20 12:37:43,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 12:37:43,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 12:37:43,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 12:37:43,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 12:37:43,695 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-20 12:37:43,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 12:37:43,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 12:37:44,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 12:37:44,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 12:37:44,024 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 12:37:44,024 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 12:37:44,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2024-09-20 12:37:45,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 12:37:45,699 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 12:37:45,700 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2024-09-20 12:37:45,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/fcab24ec2/83f308574eb54a238ad6a8d5a8524298/FLAG704e77c59 [2024-09-20 12:37:45,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/fcab24ec2/83f308574eb54a238ad6a8d5a8524298 [2024-09-20 12:37:45,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 12:37:45,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 12:37:45,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 12:37:45,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 12:37:45,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 12:37:45,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:37:45" (1/1) ... [2024-09-20 12:37:45,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68dc665b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:45, skipping insertion in model container [2024-09-20 12:37:45,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:37:45" (1/1) ... [2024-09-20 12:37:45,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 12:37:45,936 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/freire1_valuebound50.c[712,725] [2024-09-20 12:37:45,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:37:45,979 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 12:37:45,994 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/freire1_valuebound50.c[712,725] [2024-09-20 12:37:46,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:37:46,020 INFO L204 MainTranslator]: Completed translation [2024-09-20 12:37:46,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46 WrapperNode [2024-09-20 12:37:46,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 12:37:46,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 12:37:46,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 12:37:46,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 12:37:46,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,046 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 12:37:46,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 12:37:46,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 12:37:46,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 12:37:46,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 12:37:46,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,060 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,077 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]. [2024-09-20 12:37:46,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,096 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 12:37:46,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 12:37:46,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 12:37:46,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 12:37:46,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (1/1) ... [2024-09-20 12:37:46,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:37:46,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:37:46,138 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) [2024-09-20 12:37:46,141 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 [2024-09-20 12:37:46,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 12:37:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-20 12:37:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 12:37:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 12:37:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 12:37:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 12:37:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 12:37:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 12:37:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 12:37:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 12:37:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 12:37:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 12:37:46,259 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 12:37:46,263 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 12:37:47,211 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-20 12:37:47,212 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 12:37:47,249 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 12:37:47,249 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 12:37:47,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:37:47 BoogieIcfgContainer [2024-09-20 12:37:47,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 12:37:47,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 12:37:47,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 12:37:47,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 12:37:47,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:37:45" (1/3) ... [2024-09-20 12:37:47,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b3f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:37:47, skipping insertion in model container [2024-09-20 12:37:47,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:37:46" (2/3) ... [2024-09-20 12:37:47,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b3f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:37:47, skipping insertion in model container [2024-09-20 12:37:47,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:37:47" (3/3) ... [2024-09-20 12:37:47,261 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound50.c [2024-09-20 12:37:47,278 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 12:37:47,279 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 12:37:47,345 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 12:37:47,352 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;@773153e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 12:37:47,353 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 12:37:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 12:37:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 12:37:47,365 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:37:47,366 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:37:47,367 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:37:47,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:37:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1065431329, now seen corresponding path program 1 times [2024-09-20 12:37:47,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-20 12:37:47,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341141835] [2024-09-20 12:37:47,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:37:47,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-20 12:37:47,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-20 12:37:47,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-20 12:37:47,395 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-09-20 12:37:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:37:47,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-09-20 12:37:47,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:37:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:37:47,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:37:47,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-20 12:37:47,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341141835] [2024-09-20 12:37:47,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341141835] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:37:47,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:37:47,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 12:37:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30619191] [2024-09-20 12:37:47,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:37:47,703 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 12:37:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-20 12:37:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 12:37:47,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:37:47,728 INFO L87 Difference]: Start difference. First operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:37:47,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:37:47,765 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-09-20 12:37:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 12:37:47,768 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 12:37:47,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:37:47,775 INFO L225 Difference]: With dead ends: 42 [2024-09-20 12:37:47,775 INFO L226 Difference]: Without dead ends: 21 [2024-09-20 12:37:47,779 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:37:47,785 INFO L434 NwaCegarLoop]: 24 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, 24 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 [2024-09-20 12:37:47,786 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:37:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-20 12:37:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-20 12:37:47,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 12:37:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-20 12:37:47,816 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2024-09-20 12:37:47,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:37:47,816 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-20 12:37:47,816 INFO L475 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 12:37:47,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:37:47,817 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-20 12:37:47,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 12:37:47,818 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:37:47,818 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:37:47,834 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-09-20 12:37:48,019 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-20 12:37:48,019 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:37:48,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:37:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash -392820709, now seen corresponding path program 1 times [2024-09-20 12:37:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-20 12:37:48,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498889899] [2024-09-20 12:37:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:37:48,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-20 12:37:48,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-20 12:37:48,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-20 12:37:48,026 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-09-20 12:37:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-20 12:37:48,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-20 12:37:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-20 12:37:48,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-09-20 12:37:48,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1979196246] [2024-09-20 12:37:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:37:48,560 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-09-20 12:37:48,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/cvc4 [2024-09-20 12:37:48,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-09-20 12:37:48,586 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-09-20 12:37:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:37:49,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 12:37:49,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:38:10,971 WARN L293 SmtUtils]: Spent 6.87s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 12:38:19,091 WARN L293 SmtUtils]: Spent 8.12s 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) [2024-09-20 12:38:42,707 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv50 32))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (and (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 .cse2)))) (_ bv0 32))) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0) (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse3))) (= (_ bv0 32) |c___VERIFIER_assert_#in~cond|)) (and (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|) (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (and (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0) (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse3) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 .cse2)))) (_ bv0 32))))))) is different from false [2024-09-20 12:38:59,884 WARN L293 SmtUtils]: Spent 8.11s 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) [2024-09-20 12:39:53,983 WARN L293 SmtUtils]: Spent 28.52s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-20 12:40:06,080 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 12:40:14,202 WARN L293 SmtUtils]: Spent 8.12s 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) [2024-09-20 12:40:20,486 WARN L293 SmtUtils]: Spent 6.28s 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) [2024-09-20 12:40:24,517 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0) (fp.leq v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv50 32)))))) is different from false [2024-09-20 12:40:28,541 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0) (fp.leq v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv50 32)))))) is different from true [2024-09-20 12:40:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:40:28,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:40:28,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-20 12:40:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498889899] [2024-09-20 12:40:28,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:40:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1979196246] [2024-09-20 12:40:28,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1979196246] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:40:28,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:40:28,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-20 12:40:28,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514171710] [2024-09-20 12:40:28,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:40:28,544 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 12:40:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-20 12:40:28,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 12:40:28,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=50, Unknown=5, NotChecked=30, Total=110 [2024-09-20 12:40:28,545 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 12:40:42,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:40:46,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:40:50,627 WARN L854 $PredicateComparison]: unable to prove that (and (= ((_ sign_extend 24) (_ bv0 8)) (select (select |c_#memory_int#0| (_ bv1 32)) (_ bv1 32))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv50 32))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (and (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 .cse2)))) (_ bv0 32))) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0) (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse3))) (= (_ bv0 32) |c___VERIFIER_assert_#in~cond|)) (and (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|) (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (and (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0) (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse3) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 .cse2)))) (_ bv0 32))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-09-20 12:40:54,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 12:40:58,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 12:41:02,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-20 12:41:06,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 12:41:10,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 12:41:14,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 12:41:18,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 12:41:22,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 12:41:27,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:41:31,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:41:33,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:41:37,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:41:43,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:41:47,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:41:51,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:41:55,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:41:59,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:42:03,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-20 12:42:04,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:42:08,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 12:42:08,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:42:08,562 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2024-09-20 12:42:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 12:42:08,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-09-20 12:42:08,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:42:08,608 INFO L225 Difference]: With dead ends: 31 [2024-09-20 12:42:08,608 INFO L226 Difference]: Without dead ends: 29 [2024-09-20 12:42:08,608 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 75.9s TimeCoverageRelationStatistics Valid=49, Invalid=112, Unknown=7, NotChecked=72, Total=240 [2024-09-20 12:42:08,609 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 87.4s IncrementalHoareTripleChecker+Time [2024-09-20 12:42:08,609 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 61 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 19 Unknown, 64 Unchecked, 87.4s Time] [2024-09-20 12:42:08,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-20 12:42:08,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-20 12:42:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 12:42:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-20 12:42:08,622 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2024-09-20 12:42:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:42:08,624 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-20 12:42:08,626 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 12:42:08,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:42:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-20 12:42:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 12:42:08,628 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:42:08,628 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:42:08,649 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-09-20 12:42:08,837 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-09-20 12:42:09,028 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt [2024-09-20 12:42:09,029 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:42:09,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:42:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash -711167633, now seen corresponding path program 1 times [2024-09-20 12:42:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-20 12:42:09,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541725981] [2024-09-20 12:42:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:42:09,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-20 12:42:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-20 12:42:09,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-20 12:42:09,032 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-09-20 12:42:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:42:09,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 12:42:09,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:42:17,509 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 12:42:21,560 WARN L854 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_main_~r~0 c_main_~r~0)) c_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_main_~x~0)))) is different from false