./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/geo1-u_valuebound10.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 f5913f104892d2161c7fca45f1b4b94f25718ce08a5c1f24a1d3fced8b0f4ce5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:41:11,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:41:11,625 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:41:11,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:41:11,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:41:11,660 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:41:11,660 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:41:11,661 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:41:11,661 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:41:11,664 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:41:11,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:41:11,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:41:11,664 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:41:11,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:41:11,665 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:41:11,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:41:11,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:41:11,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:41:11,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:41:11,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:41:11,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:41:11,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:41:11,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:41:11,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:41:11,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:41:11,668 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:41:11,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:41:11,668 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:41:11,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:41:11,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:41:11,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:41:11,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:41:11,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:41:11,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:41:11,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:41:11,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:41:11,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:41:11,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:41:11,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:41:11,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:41:11,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:41:11,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:41:11,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5913f104892d2161c7fca45f1b4b94f25718ce08a5c1f24a1d3fced8b0f4ce5 [2024-11-18 13:41:11,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:41:11,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:41:11,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:41:11,862 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:41:11,865 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:41:11,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound10.c [2024-11-18 13:41:13,044 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:41:13,186 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:41:13,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound10.c [2024-11-18 13:41:13,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9482bc04e/87e9faa892df47c58c7fdc86aada91a3/FLAGcd9d13b11 [2024-11-18 13:41:13,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9482bc04e/87e9faa892df47c58c7fdc86aada91a3 [2024-11-18 13:41:13,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:41:13,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:41:13,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:41:13,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:41:13,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:41:13,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7559c47a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13, skipping insertion in model container [2024-11-18 13:41:13,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:41:13,760 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/geo1-u_valuebound10.c[555,568] [2024-11-18 13:41:13,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:41:13,784 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:41:13,795 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/geo1-u_valuebound10.c[555,568] [2024-11-18 13:41:13,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:41:13,820 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:41:13,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13 WrapperNode [2024-11-18 13:41:13,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:41:13,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:41:13,822 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:41:13,822 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:41:13,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,846 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2024-11-18 13:41:13,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:41:13,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:41:13,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:41:13,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:41:13,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,875 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]. [2024-11-18 13:41:13,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:41:13,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:41:13,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:41:13,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:41:13,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (1/1) ... [2024-11-18 13:41:13,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:41:13,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:41:13,916 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) [2024-11-18 13:41:13,918 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 [2024-11-18 13:41:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:41:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 13:41:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 13:41:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:41:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:41:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:41:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 13:41:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 13:41:14,006 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:41:14,010 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:41:14,121 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-18 13:41:14,122 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:41:14,130 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:41:14,130 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:41:14,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:41:14 BoogieIcfgContainer [2024-11-18 13:41:14,130 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:41:14,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:41:14,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:41:14,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:41:14,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:41:13" (1/3) ... [2024-11-18 13:41:14,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201f3ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:41:14, skipping insertion in model container [2024-11-18 13:41:14,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:41:13" (2/3) ... [2024-11-18 13:41:14,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201f3ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:41:14, skipping insertion in model container [2024-11-18 13:41:14,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:41:14" (3/3) ... [2024-11-18 13:41:14,139 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound10.c [2024-11-18 13:41:14,151 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:41:14,151 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:41:14,191 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:41:14,196 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;@5497f6d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:41:14,196 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:41:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 13:41:14,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 13:41:14,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:41:14,204 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:41:14,205 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:41:14,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:41:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1975646755, now seen corresponding path program 1 times [2024-11-18 13:41:14,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:41:14,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106250435] [2024-11-18 13:41:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:41:14,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:41:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:41:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:41:14,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:41:14,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106250435] [2024-11-18 13:41:14,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106250435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:41:14,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997354071] [2024-11-18 13:41:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:41:14,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:41:14,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:41:14,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:41:14,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:41:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:41:14,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 13:41:14,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:41:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:41:14,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:41:14,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997354071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:41:14,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:41:14,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 13:41:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67258167] [2024-11-18 13:41:14,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:41:14,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:41:14,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:41:14,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:41:14,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:41:14,450 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:41:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:41:14,466 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2024-11-18 13:41:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:41:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-18 13:41:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:41:14,474 INFO L225 Difference]: With dead ends: 47 [2024-11-18 13:41:14,474 INFO L226 Difference]: Without dead ends: 21 [2024-11-18 13:41:14,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:41:14,480 INFO L432 NwaCegarLoop]: 27 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, 27 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 [2024-11-18 13:41:14,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:41:14,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-18 13:41:14,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-18 13:41:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:41:14,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-18 13:41:14,511 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2024-11-18 13:41:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:41:14,512 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-18 13:41:14,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:41:14,513 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-18 13:41:14,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-18 13:41:14,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:41:14,514 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:41:14,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:41:14,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 13:41:14,715 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:41:14,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:41:14,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1719515233, now seen corresponding path program 1 times [2024-11-18 13:41:14,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:41:14,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291401070] [2024-11-18 13:41:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:41:14,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:41:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:41:14,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106598573] [2024-11-18 13:41:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:41:14,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:41:14,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:41:14,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:41:14,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:41:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:41:14,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:41:14,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:41:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:41:14,895 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:41:14,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:41:14,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291401070] [2024-11-18 13:41:14,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:41:14,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106598573] [2024-11-18 13:41:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106598573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:41:14,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:41:14,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:41:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746651097] [2024-11-18 13:41:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:41:14,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:41:14,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:41:14,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:41:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:41:14,897 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 13:41:14,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:41:14,932 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-11-18 13:41:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:41:14,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-18 13:41:14,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:41:14,934 INFO L225 Difference]: With dead ends: 31 [2024-11-18 13:41:14,934 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 13:41:14,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:41:14,935 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:41:14,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 69 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:41:14,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 13:41:14,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 13:41:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 13:41:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-18 13:41:14,943 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2024-11-18 13:41:14,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:41:14,944 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-18 13:41:14,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-18 13:41:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-18 13:41:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 13:41:14,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:41:14,945 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:41:14,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:41:15,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 13:41:15,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:41:15,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:41:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1670281901, now seen corresponding path program 1 times [2024-11-18 13:41:15,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:41:15,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757964106] [2024-11-18 13:41:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:41:15,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:41:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:41:15,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179965239] [2024-11-18 13:41:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:41:15,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:41:15,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:41:15,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:41:15,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:41:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 13:41:15,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-18 13:41:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 13:41:15,255 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-18 13:41:15,255 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-18 13:41:15,256 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 13:41:15,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 13:41:15,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:41:15,460 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-18 13:41:15,473 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 13:41:15,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:41:15 BoogieIcfgContainer [2024-11-18 13:41:15,476 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 13:41:15,476 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 13:41:15,476 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 13:41:15,476 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 13:41:15,476 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:41:14" (3/4) ... [2024-11-18 13:41:15,477 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-18 13:41:15,509 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 13:41:15,511 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 13:41:15,512 INFO L158 Benchmark]: Toolchain (without parser) took 1908.87ms. Allocated memory is still 161.5MB. Free memory was 104.9MB in the beginning and 113.0MB in the end (delta: -8.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:41:15,512 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 161.5MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:41:15,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.78ms. Allocated memory is still 161.5MB. Free memory was 104.9MB in the beginning and 92.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:41:15,512 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.79ms. Allocated memory is still 161.5MB. Free memory was 92.3MB in the beginning and 90.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:41:15,513 INFO L158 Benchmark]: Boogie Preprocessor took 39.79ms. Allocated memory is still 161.5MB. Free memory was 90.6MB in the beginning and 88.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:41:15,513 INFO L158 Benchmark]: RCFGBuilder took 242.82ms. Allocated memory is still 161.5MB. Free memory was 88.9MB in the beginning and 77.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-18 13:41:15,513 INFO L158 Benchmark]: TraceAbstraction took 1343.47ms. Allocated memory is still 161.5MB. Free memory was 76.7MB in the beginning and 115.1MB in the end (delta: -38.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:41:15,513 INFO L158 Benchmark]: Witness Printer took 35.56ms. Allocated memory is still 161.5MB. Free memory was 115.1MB in the beginning and 113.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:41:15,514 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 161.5MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.78ms. Allocated memory is still 161.5MB. Free memory was 104.9MB in the beginning and 92.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.79ms. Allocated memory is still 161.5MB. Free memory was 92.3MB in the beginning and 90.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.79ms. Allocated memory is still 161.5MB. Free memory was 90.6MB in the beginning and 88.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 242.82ms. Allocated memory is still 161.5MB. Free memory was 88.9MB in the beginning and 77.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1343.47ms. Allocated memory is still 161.5MB. Free memory was 76.7MB in the beginning and 115.1MB in the end (delta: -38.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 35.56ms. Allocated memory is still 161.5MB. Free memory was 115.1MB in the beginning and 113.0MB in the end (delta: 2.1MB). 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L26] CALL assume_abort_if_not(z>=0 && z<=10) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1] [L26] RET assume_abort_if_not(z>=0 && z<=10) VAL [z=0] [L27] k = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(k>=0 && k<=10) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1] [L28] RET assume_abort_if_not(k>=0 && k<=10) VAL [k=0, z=0] [L30] x = 1 [L31] y = z [L32] c = 1 VAL [c=1, k=0, x=1, y=0, z=0] [L34] COND TRUE 1 VAL [c=1, k=0, x=1, y=0, z=0] [L35] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L35] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, k=0, x=1, y=0, z=0] [L37] COND TRUE !(c < k) VAL [x=1, y=0, z=0] [L46] x = x * (z - 1) VAL [x=4294967295, y=0] [L48] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0] [L18] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 96 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 45 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 74 SizeOfPredicates, 1 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 10/12 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 proved your program to be incorrect! [2024-11-18 13:41:15,538 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE