./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6d1ee9b66acccde8e4802bcc3b75479d1ab3cc8ee3ff178f121f64cc868a595d --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:27:59,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:27:59,073 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:27:59,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:27:59,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:27:59,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:27:59,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:27:59,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:27:59,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:27:59,099 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:27:59,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:27:59,099 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:27:59,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:27:59,100 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:27:59,102 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:27:59,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:27:59,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:27:59,102 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:27:59,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:27:59,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:27:59,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:27:59,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:27:59,106 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:27:59,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:27:59,106 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:27:59,107 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:27:59,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:27:59,107 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:27:59,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:27:59,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:27:59,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:27:59,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:27:59,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:27:59,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:27:59,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:27:59,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:27:59,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:27:59,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:27:59,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:27:59,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:27:59,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:27:59,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:27:59,110 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d1ee9b66acccde8e4802bcc3b75479d1ab3cc8ee3ff178f121f64cc868a595d [2024-11-08 14:27:59,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:27:59,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:27:59,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:27:59,309 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:27:59,310 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:27:59,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c [2024-11-08 14:28:00,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:28:00,643 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:28:00,644 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c [2024-11-08 14:28:00,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7143fa732/3f6fe395f39d4e3593ad2bfab2485bd1/FLAG0b9478dae [2024-11-08 14:28:00,661 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7143fa732/3f6fe395f39d4e3593ad2bfab2485bd1 [2024-11-08 14:28:00,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:28:00,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:28:00,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:28:00,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:28:00,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:28:00,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51dabf56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00, skipping insertion in model container [2024-11-08 14:28:00,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:28:00,861 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c[712,725] [2024-11-08 14:28:00,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:28:00,881 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:28:00,892 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c[712,725] [2024-11-08 14:28:00,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:28:00,909 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:28:00,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00 WrapperNode [2024-11-08 14:28:00,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:28:00,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:28:00,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:28:00,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:28:00,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,932 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2024-11-08 14:28:00,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:28:00,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:28:00,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:28:00,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:28:00,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,955 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]. [2024-11-08 14:28:00,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,960 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,964 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:28:00,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:28:00,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:28:00,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:28:00,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (1/1) ... [2024-11-08 14:28:00,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:28:00,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:28:00,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 14:28:00,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 14:28:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:28:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:28:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:28:01,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:28:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 14:28:01,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 14:28:01,078 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:28:01,080 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:28:01,171 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-08 14:28:01,172 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:28:01,182 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:28:01,182 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 14:28:01,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:28:01 BoogieIcfgContainer [2024-11-08 14:28:01,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:28:01,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:28:01,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:28:01,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:28:01,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:28:00" (1/3) ... [2024-11-08 14:28:01,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650e7453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:28:01, skipping insertion in model container [2024-11-08 14:28:01,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:00" (2/3) ... [2024-11-08 14:28:01,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650e7453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:28:01, skipping insertion in model container [2024-11-08 14:28:01,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:28:01" (3/3) ... [2024-11-08 14:28:01,189 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound100.c [2024-11-08 14:28:01,201 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:28:01,201 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:28:01,243 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:28:01,249 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@c477633, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:28:01,250 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:28:01,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 14:28:01,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 14:28:01,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:28:01,261 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:28:01,261 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:28:01,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:28:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2024-11-08 14:28:01,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:28:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740697697] [2024-11-08 14:28:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:28:01,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:28:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:28:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:28:01,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:28:01,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740697697] [2024-11-08 14:28:01,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740697697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:28:01,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:28:01,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:28:01,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464514449] [2024-11-08 14:28:01,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:28:01,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:28:01,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:28:01,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:28:01,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:28:01,405 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:28:01,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:28:01,416 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2024-11-08 14:28:01,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:28:01,417 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 14:28:01,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:28:01,422 INFO L225 Difference]: With dead ends: 33 [2024-11-08 14:28:01,422 INFO L226 Difference]: Without dead ends: 14 [2024-11-08 14:28:01,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:28:01,426 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:28:01,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:28:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-08 14:28:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-08 14:28:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 14:28:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-08 14:28:01,451 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2024-11-08 14:28:01,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:28:01,452 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-08 14:28:01,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:28:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-08 14:28:01,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 14:28:01,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:28:01,452 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:28:01,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:28:01,453 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:28:01,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:28:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2024-11-08 14:28:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:28:01,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162693976] [2024-11-08 14:28:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:28:01,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:28:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 14:28:01,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 14:28:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 14:28:01,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 14:28:01,487 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 14:28:01,489 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 14:28:01,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 14:28:01,493 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 14:28:01,504 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 14:28:01,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 02:28:01 BoogieIcfgContainer [2024-11-08 14:28:01,506 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 14:28:01,506 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 14:28:01,506 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 14:28:01,506 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 14:28:01,507 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:28:01" (3/4) ... [2024-11-08 14:28:01,508 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 14:28:01,509 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 14:28:01,510 INFO L158 Benchmark]: Toolchain (without parser) took 844.12ms. Allocated memory is still 169.9MB. Free memory was 99.5MB in the beginning and 92.6MB in the end (delta: 6.9MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2024-11-08 14:28:01,510 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 169.9MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 14:28:01,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.66ms. Allocated memory is still 169.9MB. Free memory was 99.3MB in the beginning and 131.5MB in the end (delta: -32.2MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2024-11-08 14:28:01,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.11ms. Allocated memory is still 169.9MB. Free memory was 131.5MB in the beginning and 129.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:28:01,511 INFO L158 Benchmark]: Boogie Preprocessor took 32.70ms. Allocated memory is still 169.9MB. Free memory was 129.5MB in the beginning and 128.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:28:01,511 INFO L158 Benchmark]: RCFGBuilder took 215.37ms. Allocated memory is still 169.9MB. Free memory was 128.2MB in the beginning and 117.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-08 14:28:01,511 INFO L158 Benchmark]: TraceAbstraction took 321.57ms. Allocated memory is still 169.9MB. Free memory was 116.9MB in the beginning and 93.4MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-08 14:28:01,512 INFO L158 Benchmark]: Witness Printer took 3.27ms. Allocated memory is still 169.9MB. Free memory was 93.4MB in the beginning and 92.6MB in the end (delta: 819.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 14:28:01,514 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 169.9MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.66ms. Allocated memory is still 169.9MB. Free memory was 99.3MB in the beginning and 131.5MB in the end (delta: -32.2MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.11ms. Allocated memory is still 169.9MB. Free memory was 131.5MB in the beginning and 129.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.70ms. Allocated memory is still 169.9MB. Free memory was 129.5MB in the beginning and 128.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 215.37ms. Allocated memory is still 169.9MB. Free memory was 128.2MB in the beginning and 117.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 321.57ms. Allocated memory is still 169.9MB. Free memory was 116.9MB in the beginning and 93.4MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.27ms. Allocated memory is still 169.9MB. Free memory was 93.4MB in the beginning and 92.6MB in the end (delta: 819.6kB). Peak memory consumption was 2.1MB. 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<=100) [L14] COND FALSE !(!cond) [L28] RET assume_abort_if_not(a>=0 && a<=100) [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 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 19 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2024-11-08 14:28:01,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6d1ee9b66acccde8e4802bcc3b75479d1ab3cc8ee3ff178f121f64cc868a595d --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:28:03,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:28:03,296 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-08 14:28:03,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:28:03,302 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:28:03,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:28:03,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:28:03,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:28:03,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:28:03,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:28:03,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:28:03,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:28:03,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:28:03,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:28:03,329 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:28:03,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:28:03,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:28:03,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:28:03,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:28:03,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:28:03,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:28:03,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:28:03,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:28:03,333 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 14:28:03,334 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 14:28:03,334 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:28:03,334 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 14:28:03,334 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:28:03,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:28:03,334 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:28:03,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:28:03,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:28:03,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:28:03,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:28:03,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:28:03,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:28:03,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:28:03,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:28:03,339 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-08 14:28:03,339 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 14:28:03,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:28:03,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:28:03,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:28:03,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:28:03,341 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d1ee9b66acccde8e4802bcc3b75479d1ab3cc8ee3ff178f121f64cc868a595d [2024-11-08 14:28:03,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:28:03,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:28:03,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:28:03,599 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:28:03,600 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:28:03,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c [2024-11-08 14:28:04,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:28:04,938 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:28:04,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c [2024-11-08 14:28:04,948 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec7f9a22/dab633d4692949c0b1033863254293c5/FLAG7424c4321 [2024-11-08 14:28:04,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec7f9a22/dab633d4692949c0b1033863254293c5 [2024-11-08 14:28:04,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:28:04,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:28:04,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:28:04,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:28:04,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:28:04,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:28:04" (1/1) ... [2024-11-08 14:28:04,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634db50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:04, skipping insertion in model container [2024-11-08 14:28:04,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:28:04" (1/1) ... [2024-11-08 14:28:05,002 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:28:05,140 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c[712,725] [2024-11-08 14:28:05,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:28:05,167 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:28:05,178 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound100.c[712,725] [2024-11-08 14:28:05,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:28:05,198 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:28:05,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05 WrapperNode [2024-11-08 14:28:05,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:28:05,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:28:05,200 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:28:05,200 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:28:05,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,232 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-11-08 14:28:05,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:28:05,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:28:05,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:28:05,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:28:05,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,260 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]. [2024-11-08 14:28:05,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:28:05,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:28:05,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:28:05,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:28:05,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (1/1) ... [2024-11-08 14:28:05,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:28:05,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:28:05,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 14:28:05,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 14:28:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:28:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 14:28:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:28:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:28:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 14:28:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 14:28:05,393 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:28:05,395 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:28:06,749 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-08 14:28:06,750 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:28:06,758 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:28:06,759 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 14:28:06,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:28:06 BoogieIcfgContainer [2024-11-08 14:28:06,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:28:06,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:28:06,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:28:06,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:28:06,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:28:04" (1/3) ... [2024-11-08 14:28:06,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dd1e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:28:06, skipping insertion in model container [2024-11-08 14:28:06,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:28:05" (2/3) ... [2024-11-08 14:28:06,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dd1e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:28:06, skipping insertion in model container [2024-11-08 14:28:06,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:28:06" (3/3) ... [2024-11-08 14:28:06,765 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound100.c [2024-11-08 14:28:06,776 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:28:06,776 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:28:06,819 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:28:06,828 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@491c5e6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:28:06,828 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:28:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 14:28:06,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 14:28:06,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:28:06,836 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:28:06,836 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:28:06,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:28:06,842 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2024-11-08 14:28:06,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-08 14:28:06,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279176595] [2024-11-08 14:28:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:28:06,852 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 [2024-11-08 14:28:06,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-08 14:28:06,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2024-11-08 14:28:06,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-08 14:28:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:28:07,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 14:28:07,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:28:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:28:07,174 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:28:07,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-08 14:28:07,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279176595] [2024-11-08 14:28:07,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279176595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:28:07,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:28:07,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:28:07,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101942079] [2024-11-08 14:28:07,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:28:07,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:28:07,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-08 14:28:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:28:07,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:28:07,202 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:28:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:28:07,216 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2024-11-08 14:28:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:28:07,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 14:28:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:28:07,222 INFO L225 Difference]: With dead ends: 33 [2024-11-08 14:28:07,222 INFO L226 Difference]: Without dead ends: 14 [2024-11-08 14:28:07,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:28:07,240 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:28:07,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:28:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-08 14:28:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-08 14:28:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 14:28:07,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-08 14:28:07,267 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2024-11-08 14:28:07,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:28:07,267 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-08 14:28:07,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 14:28:07,268 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-08 14:28:07,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 14:28:07,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:28:07,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:28:07,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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)] Ended with exit code 0 [2024-11-08 14:28:07,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-08 14:28:07,476 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:28:07,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:28:07,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2024-11-08 14:28:07,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-08 14:28:07,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517475504] [2024-11-08 14:28:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:28:07,478 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 [2024-11-08 14:28:07,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-08 14:28:07,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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) [2024-11-08 14:28:07,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2024-11-08 14:28:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 14:28:07,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 14:28:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 14:28:07,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-11-08 14:28:07,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [436288434] [2024-11-08 14:28:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:28:07,945 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 14:28:07,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-08 14:28:07,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 14:28:07,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-08 14:28:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:28:08,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 14:28:08,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:28:27,099 WARN L286 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 14:28:35,159 WARN L286 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 14:28:40,577 WARN L286 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 14:29:23,776 WARN L286 SmtUtils]: Spent 28.82s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 14:29:35,968 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 14:29:42,705 WARN L286 SmtUtils]: Spent 6.74s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 14:29:48,401 WARN L286 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)