./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 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 ../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.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 cfc9b98f01b5740214418c1e274ef62d42bd44052b6c9ba666982a6bcd7671c6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 19:10:14,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 19:10:14,739 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 19:10:14,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 19:10:14,745 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 19:10:14,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 19:10:14,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 19:10:14,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 19:10:14,769 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 19:10:14,772 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 19:10:14,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 19:10:14,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 19:10:14,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 19:10:14,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 19:10:14,774 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 19:10:14,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 19:10:14,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 19:10:14,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 19:10:14,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 19:10:14,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 19:10:14,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 19:10:14,777 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 19:10:14,777 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 19:10:14,777 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 19:10:14,777 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 19:10:14,777 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 19:10:14,778 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 19:10:14,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 19:10:14,778 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 19:10:14,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 19:10:14,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 19:10:14,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 19:10:14,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 19:10:14,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 19:10:14,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 19:10:14,780 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 19:10:14,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 19:10:14,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 19:10:14,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 19:10:14,781 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 19:10:14,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 19:10:14,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 19:10:14,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfc9b98f01b5740214418c1e274ef62d42bd44052b6c9ba666982a6bcd7671c6 [2023-11-22 19:10:14,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 19:10:14,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 19:10:14,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 19:10:14,983 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 19:10:14,983 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 19:10:14,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2023-11-22 19:10:16,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 19:10:16,209 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 19:10:16,209 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2023-11-22 19:10:16,215 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdcb5f899/fcbdd1322dab4ba3ac616c0555752508/FLAG8bd16bef2 [2023-11-22 19:10:16,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdcb5f899/fcbdd1322dab4ba3ac616c0555752508 [2023-11-22 19:10:16,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 19:10:16,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 19:10:16,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 19:10:16,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 19:10:16,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 19:10:16,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9a7fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16, skipping insertion in model container [2023-11-22 19:10:16,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,253 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 19:10:16,373 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c[373,386] [2023-11-22 19:10:16,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 19:10:16,406 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 19:10:16,414 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c[373,386] [2023-11-22 19:10:16,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 19:10:16,436 INFO L206 MainTranslator]: Completed translation [2023-11-22 19:10:16,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16 WrapperNode [2023-11-22 19:10:16,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 19:10:16,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 19:10:16,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 19:10:16,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 19:10:16,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,480 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2023-11-22 19:10:16,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 19:10:16,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 19:10:16,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 19:10:16,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 19:10:16,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,489 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,495 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-22 19:10:16,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 19:10:16,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 19:10:16,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 19:10:16,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 19:10:16,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (1/1) ... [2023-11-22 19:10:16,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 19:10:16,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:10:16,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 19:10:16,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 19:10:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 19:10:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 19:10:16,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 19:10:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 19:10:16,678 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 19:10:16,683 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 19:10:16,798 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 19:10:16,818 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 19:10:16,818 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-22 19:10:16,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:10:16 BoogieIcfgContainer [2023-11-22 19:10:16,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 19:10:16,820 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 19:10:16,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 19:10:16,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 19:10:16,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:10:16" (1/3) ... [2023-11-22 19:10:16,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b0dfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:10:16, skipping insertion in model container [2023-11-22 19:10:16,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:10:16" (2/3) ... [2023-11-22 19:10:16,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b0dfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:10:16, skipping insertion in model container [2023-11-22 19:10:16,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:10:16" (3/3) ... [2023-11-22 19:10:16,825 INFO L112 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2023-11-22 19:10:16,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 19:10:16,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 19:10:16,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 19:10:16,872 INFO L357 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, mHoare=true, 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;@18f7393e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 19:10:16,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 19:10:16,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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) [2023-11-22 19:10:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-22 19:10:16,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:16,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-22 19:10:16,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:16,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash 112088733, now seen corresponding path program 1 times [2023-11-22 19:10:16,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:16,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109505111] [2023-11-22 19:10:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:16,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:10:17,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:17,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109505111] [2023-11-22 19:10:17,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109505111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:17,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:10:17,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 19:10:17,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410552088] [2023-11-22 19:10:17,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:17,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 19:10:17,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:17,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 19:10:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 19:10:17,089 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-22 19:10:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:10:17,132 INFO L93 Difference]: Finished difference Result 26 states and 41 transitions. [2023-11-22 19:10:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 19:10:17,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-22 19:10:17,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:10:17,140 INFO L225 Difference]: With dead ends: 26 [2023-11-22 19:10:17,140 INFO L226 Difference]: Without dead ends: 18 [2023-11-22 19:10:17,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 19:10:17,144 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:10:17,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:10:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-22 19:10:17,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-11-22 19:10:17,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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) [2023-11-22 19:10:17,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2023-11-22 19:10:17,167 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 5 [2023-11-22 19:10:17,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:10:17,168 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2023-11-22 19:10:17,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-22 19:10:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2023-11-22 19:10:17,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-22 19:10:17,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:17,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:10:17,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 19:10:17,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:17,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:17,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1424693200, now seen corresponding path program 1 times [2023-11-22 19:10:17,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:17,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971388160] [2023-11-22 19:10:17,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:17,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 19:10:17,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:17,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971388160] [2023-11-22 19:10:17,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971388160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:17,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:10:17,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 19:10:17,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590946860] [2023-11-22 19:10:17,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:17,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 19:10:17,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:17,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 19:10:17,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 19:10:17,222 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-22 19:10:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:10:17,284 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2023-11-22 19:10:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 19:10:17,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-11-22 19:10:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:10:17,285 INFO L225 Difference]: With dead ends: 47 [2023-11-22 19:10:17,285 INFO L226 Difference]: Without dead ends: 32 [2023-11-22 19:10:17,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 19:10:17,286 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:10:17,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 20 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:10:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-22 19:10:17,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2023-11-22 19:10:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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) [2023-11-22 19:10:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2023-11-22 19:10:17,291 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 16 [2023-11-22 19:10:17,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:10:17,291 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2023-11-22 19:10:17,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-22 19:10:17,291 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2023-11-22 19:10:17,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-22 19:10:17,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:17,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:10:17,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 19:10:17,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:17,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:17,293 INFO L85 PathProgramCache]: Analyzing trace with hash 202269940, now seen corresponding path program 1 times [2023-11-22 19:10:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926665620] [2023-11-22 19:10:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:17,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 19:10:17,313 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-22 19:10:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 19:10:17,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-22 19:10:17,341 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-22 19:10:17,341 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-22 19:10:17,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 19:10:17,345 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-22 19:10:17,348 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-22 19:10:17,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 07:10:17 BoogieIcfgContainer [2023-11-22 19:10:17,362 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-22 19:10:17,362 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-22 19:10:17,362 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-22 19:10:17,363 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-22 19:10:17,363 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:10:16" (3/4) ... [2023-11-22 19:10:17,364 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-22 19:10:17,393 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-22 19:10:17,393 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-22 19:10:17,393 INFO L158 Benchmark]: Toolchain (without parser) took 1163.72ms. Allocated memory is still 180.4MB. Free memory was 112.4MB in the beginning and 101.6MB in the end (delta: 10.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2023-11-22 19:10:17,394 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory was 78.0MB in the beginning and 77.9MB in the end (delta: 71.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 19:10:17,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.72ms. Allocated memory is still 180.4MB. Free memory was 112.2MB in the beginning and 101.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-22 19:10:17,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.28ms. Allocated memory is still 180.4MB. Free memory was 101.5MB in the beginning and 100.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 19:10:17,395 INFO L158 Benchmark]: Boogie Preprocessor took 21.65ms. Allocated memory is still 180.4MB. Free memory was 100.0MB in the beginning and 98.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 19:10:17,395 INFO L158 Benchmark]: RCFGBuilder took 315.74ms. Allocated memory is still 180.4MB. Free memory was 98.2MB in the beginning and 143.1MB in the end (delta: -44.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-22 19:10:17,395 INFO L158 Benchmark]: TraceAbstraction took 541.90ms. Allocated memory is still 180.4MB. Free memory was 142.6MB in the beginning and 103.2MB in the end (delta: 39.4MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-22 19:10:17,395 INFO L158 Benchmark]: Witness Printer took 30.63ms. Allocated memory is still 180.4MB. Free memory was 103.2MB in the beginning and 101.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 19:10:17,397 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory was 78.0MB in the beginning and 77.9MB in the end (delta: 71.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.72ms. Allocated memory is still 180.4MB. Free memory was 112.2MB in the beginning and 101.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.28ms. Allocated memory is still 180.4MB. Free memory was 101.5MB in the beginning and 100.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.65ms. Allocated memory is still 180.4MB. Free memory was 100.0MB in the beginning and 98.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 315.74ms. Allocated memory is still 180.4MB. Free memory was 98.2MB in the beginning and 143.1MB in the end (delta: -44.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 541.90ms. Allocated memory is still 180.4MB. Free memory was 142.6MB in the beginning and 103.2MB in the end (delta: 39.4MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 30.63ms. Allocated memory is still 180.4MB. Free memory was 103.2MB in the beginning and 101.6MB in the end (delta: 1.6MB). 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: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 VAL [x=0] [L18] COND FALSE !(y % 2 == 0) [L19] x += 2 VAL [x=2, y=1] [L21] COND FALSE !(y % 2 == 0) [L22] x -= 2 VAL [x=0, y=1] [L24] COND FALSE !(y % 2 == 0) [L25] x += 2 VAL [x=2, y=1] [L27] COND FALSE !(y % 2 == 0) [L28] x -= 2 VAL [x=0, y=1] [L30] COND FALSE !(y % 2 == 0) [L31] x += 2 VAL [x=2, y=1] [L33] COND FALSE !(y % 2 == 0) [L34] x -= 4 VAL [x=4294967294, y=1] [L36] COND FALSE !(y % 2 == 0) [L37] x += 4 VAL [x=2, y=1] [L39] COND FALSE !(y % 2 == 0) [L40] x += 2 VAL [x=4, y=1] [L42] COND FALSE !(y % 2 == 0) [L43] x -= 4 VAL [x=0, y=1] [L45] COND FALSE !(y % 2 == 0) [L46] x -= 4 VAL [x=4294967292, y=1] [L17] COND FALSE !(x < 99) VAL [x=4294967292, y=1] [L49] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 39 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 6, 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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! [2023-11-22 19:10:17,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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