/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/ldv-regression/test_malloc-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 16:40:29,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 16:40:29,160 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 16:40:29,164 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 16:40:29,165 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 16:40:29,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 16:40:29,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 16:40:29,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 16:40:29,190 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 16:40:29,193 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 16:40:29,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 16:40:29,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 16:40:29,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 16:40:29,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 16:40:29,194 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 16:40:29,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 16:40:29,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 16:40:29,195 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 16:40:29,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 16:40:29,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 16:40:29,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 16:40:29,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 16:40:29,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 16:40:29,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 16:40:29,196 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 16:40:29,196 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 16:40:29,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 16:40:29,196 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 16:40:29,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 16:40:29,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 16:40:29,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 16:40:29,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 16:40:29,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 16:40:29,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 16:40:29,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 16:40:29,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 16:40:29,198 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 16:40:29,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 16:40:29,198 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 16:40:29,199 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 16:40:29,199 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 16:40:29,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 16:40:29,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 16:40:29,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 16:40:29,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 16:40:29,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 16:40:29,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 16:40:29,402 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 16:40:29,402 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 16:40:29,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_malloc-2.i [2023-12-19 16:40:30,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 16:40:30,582 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 16:40:30,583 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_malloc-2.i [2023-12-19 16:40:30,601 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09c743de3/973a29624f2b4bac8b47cc75fcdaa37a/FLAG1003dadb3 [2023-12-19 16:40:30,615 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09c743de3/973a29624f2b4bac8b47cc75fcdaa37a [2023-12-19 16:40:30,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 16:40:30,618 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 16:40:30,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 16:40:30,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 16:40:30,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 16:40:30,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:30,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e58761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30, skipping insertion in model container [2023-12-19 16:40:30,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:30,657 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 16:40:30,753 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_malloc-2.i[813,826] [2023-12-19 16:40:30,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 16:40:30,875 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 16:40:30,883 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_malloc-2.i[813,826] [2023-12-19 16:40:30,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 16:40:30,943 INFO L206 MainTranslator]: Completed translation [2023-12-19 16:40:30,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30 WrapperNode [2023-12-19 16:40:30,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 16:40:30,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 16:40:30,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 16:40:30,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 16:40:30,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:30,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:30,977 INFO L138 Inliner]: procedures = 131, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2023-12-19 16:40:30,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 16:40:30,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 16:40:30,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 16:40:30,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 16:40:30,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:30,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:30,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:31,002 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 16:40:31,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:31,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:31,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:31,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:31,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:31,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:31,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 16:40:31,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 16:40:31,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 16:40:31,019 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 16:40:31,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (1/1) ... [2023-12-19 16:40:31,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 16:40:31,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 16:40:31,168 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) [2023-12-19 16:40:31,170 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 [2023-12-19 16:40:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 16:40:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-19 16:40:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-19 16:40:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 16:40:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 16:40:31,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 16:40:31,294 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 16:40:31,296 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 16:40:31,407 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 16:40:31,425 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 16:40:31,425 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-19 16:40:31,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:40:31 BoogieIcfgContainer [2023-12-19 16:40:31,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 16:40:31,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 16:40:31,427 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 16:40:31,431 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 16:40:31,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:40:30" (1/3) ... [2023-12-19 16:40:31,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3a680c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:40:31, skipping insertion in model container [2023-12-19 16:40:31,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:40:30" (2/3) ... [2023-12-19 16:40:31,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3a680c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:40:31, skipping insertion in model container [2023-12-19 16:40:31,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:40:31" (3/3) ... [2023-12-19 16:40:31,433 INFO L112 eAbstractionObserver]: Analyzing ICFG test_malloc-2.i [2023-12-19 16:40:31,447 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 16:40:31,447 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 16:40:31,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 16:40:31,484 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;@72477af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 16:40:31,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 16:40:31,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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) [2023-12-19 16:40:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-19 16:40:31,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:40:31,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-19 16:40:31,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:40:31,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:40:31,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1643568, now seen corresponding path program 1 times [2023-12-19 16:40:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:40:31,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095761265] [2023-12-19 16:40:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:40:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:40:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:40:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 16:40:31,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:40:31,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095761265] [2023-12-19 16:40:31,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095761265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:40:31,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:40:31,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 16:40:31,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154232602] [2023-12-19 16:40:31,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:40:31,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 16:40:31,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:40:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 16:40:31,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 16:40:31,760 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-12-19 16:40:31,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:40:31,791 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2023-12-19 16:40:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 16:40:31,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-12-19 16:40:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:40:31,797 INFO L225 Difference]: With dead ends: 11 [2023-12-19 16:40:31,797 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 16:40:31,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:40:31,801 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:40:31,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:40:31,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 16:40:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 16:40:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-12-19 16:40:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 16:40:31,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2023-12-19 16:40:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:40:31,817 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 16:40:31,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-12-19 16:40:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 16:40:31,817 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 16:40:31,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 16:40:31,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 16:40:31,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 16:40:31,836 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 16:40:31,836 INFO L899 garLoopResultBuilder]: For program point L386-2(lines 386 388) no Hoare annotation was computed. [2023-12-19 16:40:31,836 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2023-12-19 16:40:31,837 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-12-19 16:40:31,837 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2023-12-19 16:40:31,837 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 18) no Hoare annotation was computed. [2023-12-19 16:40:31,837 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 16:40:31,838 INFO L899 garLoopResultBuilder]: For program point L386(lines 386 388) no Hoare annotation was computed. [2023-12-19 16:40:31,841 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-19 16:40:31,842 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 16:40:31,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 04:40:31 BoogieIcfgContainer [2023-12-19 16:40:31,845 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 16:40:31,846 INFO L158 Benchmark]: Toolchain (without parser) took 1228.13ms. Allocated memory is still 355.5MB. Free memory was 315.2MB in the beginning and 325.2MB in the end (delta: -10.1MB). Peak memory consumption was 63.8MB. Max. memory is 8.0GB. [2023-12-19 16:40:31,846 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 200.3MB. Free memory is still 154.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 16:40:31,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.92ms. Allocated memory is still 355.5MB. Free memory was 314.8MB in the beginning and 298.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-19 16:40:31,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.58ms. Allocated memory is still 355.5MB. Free memory was 298.0MB in the beginning and 296.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 16:40:31,847 INFO L158 Benchmark]: Boogie Preprocessor took 40.32ms. Allocated memory is still 355.5MB. Free memory was 296.3MB in the beginning and 294.6MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 16:40:31,847 INFO L158 Benchmark]: RCFGBuilder took 406.23ms. Allocated memory is still 355.5MB. Free memory was 294.6MB in the beginning and 283.7MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 16:40:31,848 INFO L158 Benchmark]: TraceAbstraction took 418.70ms. Allocated memory is still 355.5MB. Free memory was 283.1MB in the beginning and 325.2MB in the end (delta: -42.1MB). Peak memory consumption was 32.3MB. Max. memory is 8.0GB. [2023-12-19 16:40:31,849 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 200.3MB. Free memory is still 154.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 323.92ms. Allocated memory is still 355.5MB. Free memory was 314.8MB in the beginning and 298.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.58ms. Allocated memory is still 355.5MB. Free memory was 298.0MB in the beginning and 296.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.32ms. Allocated memory is still 355.5MB. Free memory was 296.3MB in the beginning and 294.6MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 406.23ms. Allocated memory is still 355.5MB. Free memory was 294.6MB in the beginning and 283.7MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 418.70ms. Allocated memory is still 355.5MB. Free memory was 283.1MB in the beginning and 325.2MB in the end (delta: -42.1MB). Peak memory consumption was 32.3MB. 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 - PositiveResult [Line: 15]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-19 16:40:31,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...