/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-fpi/nsqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 21:21:18,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 21:21:18,748 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 21:21:18,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 21:21:18,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 21:21:18,780 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 21:21:18,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 21:21:18,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 21:21:18,781 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 21:21:18,783 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 21:21:18,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 21:21:18,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 21:21:18,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 21:21:18,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 21:21:18,786 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 21:21:18,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 21:21:18,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 21:21:18,786 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 21:21:18,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 21:21:18,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 21:21:18,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 21:21:18,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 21:21:18,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 21:21:18,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 21:21:18,787 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 21:21:18,787 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 21:21:18,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 21:21:18,788 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 21:21:18,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 21:21:18,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 21:21:18,789 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 21:21:18,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 21:21:18,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 21:21:18,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 21:21:18,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 21:21:18,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 21:21:18,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 21:21:18,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 21:21:18,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 21:21:18,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 21:21:18,791 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 21:21:18,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 21:21:18,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 21:21:18,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 21:21:18,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 21:21:18,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 21:21:18,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 21:21:18,990 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 21:21:18,991 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 21:21:18,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/nsqmf.c [2023-12-18 21:21:20,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 21:21:20,318 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 21:21:20,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/nsqmf.c [2023-12-18 21:21:20,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4608de1a/89694fdbda1c48e7bc3cfdeab1a0615f/FLAG6b565e252 [2023-12-18 21:21:20,337 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4608de1a/89694fdbda1c48e7bc3cfdeab1a0615f [2023-12-18 21:21:20,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 21:21:20,340 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 21:21:20,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 21:21:20,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 21:21:20,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 21:21:20,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f5f239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20, skipping insertion in model container [2023-12-18 21:21:20,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,363 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 21:21:20,467 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/nsqmf.c[588,601] [2023-12-18 21:21:20,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 21:21:20,504 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 21:21:20,514 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/nsqmf.c[588,601] [2023-12-18 21:21:20,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 21:21:20,536 INFO L206 MainTranslator]: Completed translation [2023-12-18 21:21:20,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20 WrapperNode [2023-12-18 21:21:20,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 21:21:20,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 21:21:20,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 21:21:20,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 21:21:20,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,578 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-12-18 21:21:20,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 21:21:20,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 21:21:20,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 21:21:20,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 21:21:20,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,603 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]. [2023-12-18 21:21:20,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,622 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 21:21:20,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 21:21:20,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 21:21:20,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 21:21:20,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (1/1) ... [2023-12-18 21:21:20,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 21:21:20,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:21:20,651 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) [2023-12-18 21:21:20,668 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 [2023-12-18 21:21:20,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 21:21:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 21:21:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 21:21:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-18 21:21:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-18 21:21:20,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 21:21:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 21:21:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-18 21:21:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-18 21:21:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-18 21:21:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 21:21:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 21:21:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 21:21:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 21:21:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-18 21:21:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-18 21:21:20,747 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 21:21:20,749 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 21:21:20,853 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 21:21:20,872 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 21:21:20,872 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-18 21:21:20,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:21:20 BoogieIcfgContainer [2023-12-18 21:21:20,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 21:21:20,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 21:21:20,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 21:21:20,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 21:21:20,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 09:21:20" (1/3) ... [2023-12-18 21:21:20,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf7bae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:21:20, skipping insertion in model container [2023-12-18 21:21:20,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:21:20" (2/3) ... [2023-12-18 21:21:20,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf7bae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:21:20, skipping insertion in model container [2023-12-18 21:21:20,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:21:20" (3/3) ... [2023-12-18 21:21:20,880 INFO L112 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2023-12-18 21:21:20,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 21:21:20,892 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 21:21:20,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 21:21:20,931 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;@615fe195, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 21:21:20,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 21:21:20,935 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) [2023-12-18 21:21:20,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-18 21:21:20,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:21:20,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:21:20,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:21:20,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:21:20,945 INFO L85 PathProgramCache]: Analyzing trace with hash -841652609, now seen corresponding path program 1 times [2023-12-18 21:21:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:21:20,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853566063] [2023-12-18 21:21:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:21:20,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:21:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:21:21,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:21:21,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853566063] [2023-12-18 21:21:21,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-18 21:21:21,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550828287] [2023-12-18 21:21:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:21:21,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:21:21,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:21:21,047 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) [2023-12-18 21:21:21,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 21:21:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:21:21,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-18 21:21:21,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:21:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:21:21,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 21:21:21,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550828287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:21:21,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:21:21,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 21:21:21,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022827363] [2023-12-18 21:21:21,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:21:21,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 21:21:21,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:21:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 21:21:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 21:21:21,166 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) [2023-12-18 21:21:21,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:21:21,199 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2023-12-18 21:21:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 21:21:21,202 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 [2023-12-18 21:21:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:21:21,216 INFO L225 Difference]: With dead ends: 29 [2023-12-18 21:21:21,217 INFO L226 Difference]: Without dead ends: 13 [2023-12-18 21:21:21,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 21:21:21,224 INFO L413 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 [2023-12-18 21:21:21,226 INFO L414 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] [2023-12-18 21:21:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-18 21:21:21,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-18 21:21:21,252 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) [2023-12-18 21:21:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-12-18 21:21:21,253 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 11 [2023-12-18 21:21:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:21:21,254 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-12-18 21:21:21,254 INFO L496 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) [2023-12-18 21:21:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-12-18 21:21:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-18 21:21:21,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:21:21,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:21:21,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 21:21:21,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-18 21:21:21,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:21:21,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:21:21,464 INFO L85 PathProgramCache]: Analyzing trace with hash -161594239, now seen corresponding path program 1 times [2023-12-18 21:21:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:21:21,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482221492] [2023-12-18 21:21:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:21:21,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:21:21,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 21:21:21,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386533400] [2023-12-18 21:21:21,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:21:21,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:21:21,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:21:21,508 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) [2023-12-18 21:21:21,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 21:21:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-18 21:21:21,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-18 21:21:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-18 21:21:21,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-18 21:21:21,590 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-18 21:21:21,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 21:21:21,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 21:21:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-18 21:21:21,799 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-18 21:21:21,802 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 21:21:21,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 09:21:21 BoogieIcfgContainer [2023-12-18 21:21:21,814 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 21:21:21,815 INFO L158 Benchmark]: Toolchain (without parser) took 1474.47ms. Allocated memory was 196.1MB in the beginning and 245.4MB in the end (delta: 49.3MB). Free memory was 146.6MB in the beginning and 202.3MB in the end (delta: -55.7MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 21:21:21,815 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 196.1MB. Free memory was 149.9MB in the beginning and 149.7MB in the end (delta: 157.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 21:21:21,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.91ms. Allocated memory is still 196.1MB. Free memory was 146.6MB in the beginning and 135.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 21:21:21,816 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.36ms. Allocated memory is still 196.1MB. Free memory was 135.0MB in the beginning and 133.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 21:21:21,816 INFO L158 Benchmark]: Boogie Preprocessor took 47.47ms. Allocated memory is still 196.1MB. Free memory was 133.4MB in the beginning and 131.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-18 21:21:21,816 INFO L158 Benchmark]: RCFGBuilder took 245.94ms. Allocated memory is still 196.1MB. Free memory was 131.3MB in the beginning and 117.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-18 21:21:21,817 INFO L158 Benchmark]: TraceAbstraction took 939.87ms. Allocated memory was 196.1MB in the beginning and 245.4MB in the end (delta: 49.3MB). Free memory was 117.0MB in the beginning and 202.3MB in the end (delta: -85.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 21:21:21,818 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 196.1MB. Free memory was 149.9MB in the beginning and 149.7MB in the end (delta: 157.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.91ms. Allocated memory is still 196.1MB. Free memory was 146.6MB in the beginning and 135.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.36ms. Allocated memory is still 196.1MB. Free memory was 135.0MB in the beginning and 133.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.47ms. Allocated memory is still 196.1MB. Free memory was 133.4MB in the beginning and 131.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 245.94ms. Allocated memory is still 196.1MB. Free memory was 131.3MB in the beginning and 117.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 939.87ms. Allocated memory was 196.1MB in the beginning and 245.4MB in the end (delta: 49.3MB). Free memory was 117.0MB in the beginning and 202.3MB in the end (delta: -85.3MB). There was no memory consumed. Max. memory is 8.0GB. * 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, \old(cond)=1, cond=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] b[0] = 1 [L32] a[0] = 1 [L34] i=1 VAL [N=1, a={-2:0}, b={-1:0}, i=1] [L34] COND FALSE !(i