./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn4f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn4f.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 43c1de0381eac57fc6f4c99677f9636747c4cd8593c98dc51f3f286f262ef0fa --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 22:30:38,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 22:30:38,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 22:30:38,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 22:30:38,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 22:30:38,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 22:30:38,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 22:30:38,401 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 22:30:38,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 22:30:38,403 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 22:30:38,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 22:30:38,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 22:30:38,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 22:30:38,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 22:30:38,406 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 22:30:38,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 22:30:38,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 22:30:38,407 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 22:30:38,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 22:30:38,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 22:30:38,407 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 22:30:38,408 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 22:30:38,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 22:30:38,408 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 22:30:38,408 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 22:30:38,408 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 22:30:38,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 22:30:38,409 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 22:30:38,409 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 22:30:38,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 22:30:38,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 22:30:38,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 22:30:38,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:30:38,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 22:30:38,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 22:30:38,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 22:30:38,411 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 22:30:38,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 22:30:38,412 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 22:30:38,412 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 22:30:38,412 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 22:30:38,413 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 22:30:38,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c1de0381eac57fc6f4c99677f9636747c4cd8593c98dc51f3f286f262ef0fa [2024-10-13 22:30:38,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 22:30:38,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 22:30:38,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 22:30:38,650 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 22:30:38,650 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 22:30:38,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn4f.c [2024-10-13 22:30:39,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 22:30:40,033 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 22:30:40,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn4f.c [2024-10-13 22:30:40,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8583854cf/3afda7e0b2a3428ebf4fbbee768d6da1/FLAGc0ec74f9a [2024-10-13 22:30:40,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8583854cf/3afda7e0b2a3428ebf4fbbee768d6da1 [2024-10-13 22:30:40,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 22:30:40,454 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 22:30:40,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 22:30:40,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 22:30:40,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 22:30:40,462 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b57606c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40, skipping insertion in model container [2024-10-13 22:30:40,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,479 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 22:30:40,592 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn4f.c[588,601] [2024-10-13 22:30:40,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:30:40,631 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 22:30:40,643 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn4f.c[588,601] [2024-10-13 22:30:40,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:30:40,665 INFO L204 MainTranslator]: Completed translation [2024-10-13 22:30:40,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40 WrapperNode [2024-10-13 22:30:40,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 22:30:40,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 22:30:40,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 22:30:40,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 22:30:40,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,693 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2024-10-13 22:30:40,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 22:30:40,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 22:30:40,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 22:30:40,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 22:30:40,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,732 INFO L175 MemorySlicer]: Split 18 memory accesses to 4 slices as follows [2, 8, 4, 4]. 44 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-10-13 22:30:40,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 22:30:40,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 22:30:40,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 22:30:40,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 22:30:40,747 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (1/1) ... [2024-10-13 22:30:40,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:30:40,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:30:40,788 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) [2024-10-13 22:30:40,792 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 [2024-10-13 22:30:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 22:30:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 22:30:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 22:30:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 22:30:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 22:30:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 22:30:40,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 22:30:40,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 22:30:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 22:30:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 22:30:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 22:30:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 22:30:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 22:30:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 22:30:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 22:30:40,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 22:30:40,896 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 22:30:40,898 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 22:30:41,024 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-13 22:30:41,024 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 22:30:41,050 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 22:30:41,051 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 22:30:41,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:30:41 BoogieIcfgContainer [2024-10-13 22:30:41,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 22:30:41,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 22:30:41,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 22:30:41,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 22:30:41,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:30:40" (1/3) ... [2024-10-13 22:30:41,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce126bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:30:41, skipping insertion in model container [2024-10-13 22:30:41,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:40" (2/3) ... [2024-10-13 22:30:41,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce126bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:30:41, skipping insertion in model container [2024-10-13 22:30:41,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:30:41" (3/3) ... [2024-10-13 22:30:41,057 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2024-10-13 22:30:41,069 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 22:30:41,070 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 22:30:41,109 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 22:30:41,114 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;@4e344746, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 22:30:41,115 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 22:30:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:30:41,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-13 22:30:41,121 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:30:41,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:30:41,122 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:30:41,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:30:41,126 INFO L85 PathProgramCache]: Analyzing trace with hash 955298750, now seen corresponding path program 1 times [2024-10-13 22:30:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:30:41,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397085924] [2024-10-13 22:30:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:30:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:30:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:30:41,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:30:41,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397085924] [2024-10-13 22:30:41,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397085924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:30:41,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:30:41,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:30:41,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97512564] [2024-10-13 22:30:41,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:30:41,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 22:30:41,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:30:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 22:30:41,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:30:41,310 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:30:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:30:41,339 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2024-10-13 22:30:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 22:30:41,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-13 22:30:41,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:30:41,347 INFO L225 Difference]: With dead ends: 29 [2024-10-13 22:30:41,347 INFO L226 Difference]: Without dead ends: 13 [2024-10-13 22:30:41,350 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 [2024-10-13 22:30:41,353 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:30:41,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:30:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-13 22:30:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-13 22:30:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:30:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-10-13 22:30:41,377 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 11 [2024-10-13 22:30:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:30:41,377 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-10-13 22:30:41,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 22:30:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-10-13 22:30:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-13 22:30:41,379 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:30:41,380 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:30:41,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 22:30:41,380 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:30:41,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:30:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1635357120, now seen corresponding path program 1 times [2024-10-13 22:30:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:30:41,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919879166] [2024-10-13 22:30:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:30:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 22:30:41,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774011335] [2024-10-13 22:30:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:30:41,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:41,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:30:41,453 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) [2024-10-13 22:30:41,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 22:30:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 22:30:41,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 22:30:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 22:30:41,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 22:30:41,548 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 22:30:41,549 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-13 22:30:41,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 22:30:41,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:30:41,753 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 22:30:41,809 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 22:30:41,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:30:41 BoogieIcfgContainer [2024-10-13 22:30:41,813 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 22:30:41,815 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 22:30:41,815 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 22:30:41,816 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 22:30:41,816 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:30:41" (3/4) ... [2024-10-13 22:30:41,817 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-13 22:30:41,846 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 22:30:41,847 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 22:30:41,847 INFO L158 Benchmark]: Toolchain (without parser) took 1392.97ms. Allocated memory was 163.6MB in the beginning and 230.7MB in the end (delta: 67.1MB). Free memory was 91.7MB in the beginning and 198.0MB in the end (delta: -106.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 22:30:41,847 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 163.6MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 22:30:41,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.65ms. Allocated memory is still 163.6MB. Free memory was 91.4MB in the beginning and 79.5MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 22:30:41,848 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.23ms. Allocated memory is still 163.6MB. Free memory was 79.5MB in the beginning and 77.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 22:30:41,848 INFO L158 Benchmark]: Boogie Preprocessor took 50.92ms. Allocated memory is still 163.6MB. Free memory was 77.9MB in the beginning and 132.7MB in the end (delta: -54.8MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2024-10-13 22:30:41,849 INFO L158 Benchmark]: RCFGBuilder took 304.66ms. Allocated memory is still 163.6MB. Free memory was 132.6MB in the beginning and 121.2MB in the end (delta: 11.4MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2024-10-13 22:30:41,849 INFO L158 Benchmark]: TraceAbstraction took 762.19ms. Allocated memory was 163.6MB in the beginning and 230.7MB in the end (delta: 67.1MB). Free memory was 120.0MB in the beginning and 200.0MB in the end (delta: -79.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-10-13 22:30:41,849 INFO L158 Benchmark]: Witness Printer took 31.39ms. Allocated memory is still 230.7MB. Free memory was 200.0MB in the beginning and 198.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 22:30:41,851 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 163.6MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.65ms. Allocated memory is still 163.6MB. Free memory was 91.4MB in the beginning and 79.5MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.23ms. Allocated memory is still 163.6MB. Free memory was 79.5MB in the beginning and 77.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.92ms. Allocated memory is still 163.6MB. Free memory was 77.9MB in the beginning and 132.7MB in the end (delta: -54.8MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.66ms. Allocated memory is still 163.6MB. Free memory was 132.6MB in the beginning and 121.2MB in the end (delta: 11.4MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * TraceAbstraction took 762.19ms. Allocated memory was 163.6MB in the beginning and 230.7MB in the end (delta: 67.1MB). Free memory was 120.0MB in the beginning and 200.0MB in the end (delta: -79.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 31.39ms. Allocated memory is still 230.7MB. Free memory was 200.0MB in the beginning and 198.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 8 [L32] b[0] = 0 [L33] i=1 VAL [N=1, a={-1:0}, b={-2:0}, i=1] [L33] COND FALSE !(i