/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-regression/test29-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:38:09,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:38:09,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:38:09,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:38:09,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:38:09,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:38:09,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:38:09,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:38:09,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:38:09,383 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:38:09,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:38:09,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:38:09,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:38:09,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:38:09,385 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:38:09,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:38:09,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:38:09,386 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:38:09,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:38:09,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:38:09,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:38:09,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:38:09,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:38:09,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:38:09,388 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:38:09,388 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:38:09,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:38:09,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:38:09,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:38:09,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:38:09,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:38:09,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:38:09,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:38:09,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:38:09,390 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:38:09,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:38:09,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:38:09,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:38:09,390 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:38:09,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:38:09,391 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:38:09,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:38:09,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:38:09,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:38:09,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:38:09,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:38:09,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:38:09,632 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:38:09,632 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:38:09,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-1.c [2023-12-16 04:38:10,704 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:38:10,949 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:38:10,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-1.c [2023-12-16 04:38:10,957 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449f687a0/8e3cb2825e2a4da8a0ffb76d721ee13b/FLAGa2734602f [2023-12-16 04:38:10,984 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449f687a0/8e3cb2825e2a4da8a0ffb76d721ee13b [2023-12-16 04:38:10,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:38:10,987 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:38:10,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:38:10,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:38:10,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:38:11,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:38:10" (1/1) ... [2023-12-16 04:38:11,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b235ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11, skipping insertion in model container [2023-12-16 04:38:11,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:38:10" (1/1) ... [2023-12-16 04:38:11,030 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:38:11,161 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/test29-1.c[614,627] [2023-12-16 04:38:11,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:38:11,172 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:38:11,185 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/test29-1.c[614,627] [2023-12-16 04:38:11,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:38:11,199 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:38:11,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11 WrapperNode [2023-12-16 04:38:11,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:38:11,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:38:11,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:38:11,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:38:11,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,226 INFO L138 Inliner]: procedures = 13, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-12-16 04:38:11,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:38:11,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:38:11,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:38:11,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:38:11,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,247 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,268 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-16 04:38:11,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:38:11,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:38:11,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:38:11,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:38:11,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (1/1) ... [2023-12-16 04:38:11,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:38:11,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:38:11,366 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) [2023-12-16 04:38:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:38:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:38:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:38:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 04:38:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 04:38:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 04:38:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:38:11,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:38:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:38:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:38:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 04:38:11,376 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 [2023-12-16 04:38:11,454 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:38:11,456 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:38:11,571 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:38:11,596 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:38:11,596 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 04:38:11,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:38:11 BoogieIcfgContainer [2023-12-16 04:38:11,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:38:11,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:38:11,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:38:11,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:38:11,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:38:10" (1/3) ... [2023-12-16 04:38:11,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56796987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:38:11, skipping insertion in model container [2023-12-16 04:38:11,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:38:11" (2/3) ... [2023-12-16 04:38:11,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56796987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:38:11, skipping insertion in model container [2023-12-16 04:38:11,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:38:11" (3/3) ... [2023-12-16 04:38:11,605 INFO L112 eAbstractionObserver]: Analyzing ICFG test29-1.c [2023-12-16 04:38:11,629 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:38:11,629 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:38:11,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:38:11,664 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;@42843231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:38:11,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:38:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2023-12-16 04:38:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 04:38:11,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:38:11,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 04:38:11,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:38:11,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:38:11,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1665388594, now seen corresponding path program 1 times [2023-12-16 04:38:11,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:38:11,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812534084] [2023-12-16 04:38:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:38:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:38:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:38:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:38:11,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:38:11,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812534084] [2023-12-16 04:38:11,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812534084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:38:11,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:38:11,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:38:11,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681325222] [2023-12-16 04:38:11,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:38:11,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:38:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:38:11,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:38:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:38:11,997 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-12-16 04:38:12,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:38:12,057 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2023-12-16 04:38:12,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:38:12,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2023-12-16 04:38:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:38:12,064 INFO L225 Difference]: With dead ends: 18 [2023-12-16 04:38:12,064 INFO L226 Difference]: Without dead ends: 7 [2023-12-16 04:38:12,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:38:12,070 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:38:12,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:38:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-16 04:38:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-16 04:38:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2023-12-16 04:38:12,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2023-12-16 04:38:12,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2023-12-16 04:38:12,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:38:12,090 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2023-12-16 04:38:12,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2023-12-16 04:38:12,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2023-12-16 04:38:12,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 04:38:12,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:38:12,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 04:38:12,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:38:12,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:38:12,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:38:12,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1667235636, now seen corresponding path program 1 times [2023-12-16 04:38:12,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:38:12,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930968831] [2023-12-16 04:38:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:38:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:38:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 04:38:12,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-16 04:38:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 04:38:12,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-16 04:38:12,149 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-16 04:38:12,150 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:38:12,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:38:12,153 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-16 04:38:12,156 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:38:12,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:38:12 BoogieIcfgContainer [2023-12-16 04:38:12,169 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:38:12,169 INFO L158 Benchmark]: Toolchain (without parser) took 1182.00ms. Allocated memory was 178.3MB in the beginning and 312.5MB in the end (delta: 134.2MB). Free memory was 114.4MB in the beginning and 244.9MB in the end (delta: -130.6MB). Peak memory consumption was 4.7MB. Max. memory is 8.0GB. [2023-12-16 04:38:12,169 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 178.3MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:38:12,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.22ms. Allocated memory is still 178.3MB. Free memory was 114.1MB in the beginning and 103.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:38:12,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.64ms. Allocated memory is still 178.3MB. Free memory was 103.4MB in the beginning and 101.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 04:38:12,170 INFO L158 Benchmark]: Boogie Preprocessor took 48.04ms. Allocated memory is still 178.3MB. Free memory was 101.8MB in the beginning and 100.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:38:12,171 INFO L158 Benchmark]: RCFGBuilder took 321.31ms. Allocated memory was 178.3MB in the beginning and 312.5MB in the end (delta: 134.2MB). Free memory was 100.0MB in the beginning and 271.4MB in the end (delta: -171.4MB). Peak memory consumption was 6.7MB. Max. memory is 8.0GB. [2023-12-16 04:38:12,171 INFO L158 Benchmark]: TraceAbstraction took 570.59ms. Allocated memory is still 312.5MB. Free memory was 270.7MB in the beginning and 244.9MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-16 04:38:12,173 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 178.3MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 212.22ms. Allocated memory is still 178.3MB. Free memory was 114.1MB in the beginning and 103.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.64ms. Allocated memory is still 178.3MB. Free memory was 103.4MB in the beginning and 101.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.04ms. Allocated memory is still 178.3MB. Free memory was 101.8MB in the beginning and 100.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 321.31ms. Allocated memory was 178.3MB in the beginning and 312.5MB in the end (delta: 134.2MB). Free memory was 100.0MB in the beginning and 271.4MB in the end (delta: -171.4MB). Peak memory consumption was 6.7MB. Max. memory is 8.0GB. * TraceAbstraction took 570.59ms. Allocated memory is still 312.5MB. Free memory was 270.7MB in the beginning and 244.9MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. 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: 30]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] union dummy d1, d2; [L16] int n = __VERIFIER_nondet_int(); [L17] union dummy *pd = n ? &d1 : &d2; [L18] d1.a = __VERIFIER_nondet_int() [L19] COND FALSE !(pd == &d1) [L22] pd->b = 0 [L24] pd == &d2 && d1.a != 0 VAL [d1={6:0}, d2={5:0}, n=0, pd={5:0}] [L24] pd == &d2 && d1.a != 0 [L24] EXPR d1.a [L24] pd == &d2 && d1.a != 0 VAL [d1={6:0}, d2={5:0}, n=0, pd={5:0}] [L24] COND TRUE pd == &d2 && d1.a != 0 [L30] reach_error() VAL [d1={6:0}, d2={5:0}, n=0, pd={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 RESULT: Ultimate proved your program to be incorrect! [2023-12-16 04:38:12,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...