/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/ldv-regression/test26-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:08:14,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:08:14,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:08:14,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:08:14,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:08:14,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:08:14,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:08:14,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:08:14,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:08:14,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:08:14,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:08:14,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:08:14,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:08:14,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:08:14,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:08:14,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:08:14,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:08:14,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:08:14,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:08:14,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:08:14,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:08:14,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:08:14,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:08:14,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:08:14,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 00:08:14,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 00:08:14,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 00:08:14,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 00:08:14,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 00:08:14,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 00:08:14,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 00:08:14,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 00:08:14,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 00:08:14,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 00:08:14,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 00:08:14,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 00:08:14,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 00:08:14,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 00:08:14,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:08:14,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:08:14,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:08:14,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 00:08:14,513 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:08:14,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:08:14,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:08:14,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:08:14,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:08:14,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:08:14,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:08:14,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:08:14,515 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:08:14,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:08:14,516 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:08:14,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:08:14,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:08:14,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:08:14,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:08:14,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:08:14,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:08:14,517 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:08:14,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:08:14,517 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:08:14,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:08:14,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:08:14,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:08:14,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:08:14,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:08:14,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:08:14,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:08:14,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:08:14,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:08:14,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:08:14,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:08:14,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:08:14,520 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:08:14,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:08:14,520 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:08:14,521 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:08:14,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:08:14,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:08:14,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:08:14,731 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:08:14,731 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:08:14,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test26-2.c [2023-03-31 00:08:16,019 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:08:16,217 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:08:16,218 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test26-2.c [2023-03-31 00:08:16,223 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343b31e62/c71771d61ab74cb28385e479a79ad27d/FLAG6689f09d9 [2023-03-31 00:08:16,235 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/343b31e62/c71771d61ab74cb28385e479a79ad27d [2023-03-31 00:08:16,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:08:16,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:08:16,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:08:16,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:08:16,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:08:16,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248e0623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16, skipping insertion in model container [2023-03-31 00:08:16,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:08:16,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:08:16,389 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test26-2.c[493,506] [2023-03-31 00:08:16,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:08:16,409 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:08:16,419 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test26-2.c[493,506] [2023-03-31 00:08:16,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:08:16,432 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:08:16,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16 WrapperNode [2023-03-31 00:08:16,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:08:16,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:08:16,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:08:16,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:08:16,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,454 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:08:16,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:08:16,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:08:16,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:08:16,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16" (1/1) ... [2023-03-31 00:08:16,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:08:16,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:08:16,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 00:08:16,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 00:08:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:08:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:08:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:08:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2023-03-31 00:08:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:08:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:08:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:08:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:08:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:08:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2023-03-31 00:08:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:08:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:08:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:08:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:08:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:08:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:08:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:08:16,605 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:08:16,606 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:08:16,678 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:08:16,683 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:08:16,684 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 00:08:16,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:08:16 BoogieIcfgContainer [2023-03-31 00:08:16,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:08:16,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:08:16,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:08:16,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:08:16,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:08:16" (1/3) ... [2023-03-31 00:08:16,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ead8134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:08:16, skipping insertion in model container [2023-03-31 00:08:16,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:16" (2/3) ... [2023-03-31 00:08:16,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ead8134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:08:16, skipping insertion in model container [2023-03-31 00:08:16,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:08:16" (3/3) ... [2023-03-31 00:08:16,692 INFO L112 eAbstractionObserver]: Analyzing ICFG test26-2.c [2023-03-31 00:08:16,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:08:16,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:08:16,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:08:16,774 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=LoopsAndPotentialCycles, 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;@741685ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:08:16,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:08:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 00:08:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-03-31 00:08:16,788 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:08:16,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:08:16,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:08:16,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:08:16,795 INFO L85 PathProgramCache]: Analyzing trace with hash 111133402, now seen corresponding path program 1 times [2023-03-31 00:08:16,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:08:16,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103291743] [2023-03-31 00:08:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:08:16,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:08:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:08:16,918 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 00:08:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 00:08:16,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 00:08:16,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 00:08:16,999 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:08:17,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:08:17,005 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-03-31 00:08:17,008 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:08:17,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:08:17 BoogieIcfgContainer [2023-03-31 00:08:17,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:08:17,037 INFO L158 Benchmark]: Toolchain (without parser) took 796.81ms. Allocated memory was 168.8MB in the beginning and 222.3MB in the end (delta: 53.5MB). Free memory was 112.6MB in the beginning and 182.0MB in the end (delta: -69.4MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:08:17,038 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 168.8MB. Free memory was 121.1MB in the beginning and 121.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:08:17,039 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.63ms. Allocated memory is still 168.8MB. Free memory was 112.3MB in the beginning and 102.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:08:17,039 INFO L158 Benchmark]: Boogie Preprocessor took 26.97ms. Allocated memory is still 168.8MB. Free memory was 102.4MB in the beginning and 100.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 00:08:17,044 INFO L158 Benchmark]: RCFGBuilder took 224.37ms. Allocated memory is still 168.8MB. Free memory was 100.8MB in the beginning and 90.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:08:17,045 INFO L158 Benchmark]: TraceAbstraction took 347.76ms. Allocated memory was 168.8MB in the beginning and 222.3MB in the end (delta: 53.5MB). Free memory was 90.3MB in the beginning and 182.0MB in the end (delta: -91.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:08:17,050 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 168.8MB. Free memory was 121.1MB in the beginning and 121.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 192.63ms. Allocated memory is still 168.8MB. Free memory was 112.3MB in the beginning and 102.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.97ms. Allocated memory is still 168.8MB. Free memory was 102.4MB in the beginning and 100.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 224.37ms. Allocated memory is still 168.8MB. Free memory was 100.8MB in the beginning and 90.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 347.76ms. Allocated memory was 168.8MB in the beginning and 222.3MB in the end (delta: 53.5MB). Free memory was 90.3MB in the beginning and 182.0MB in the end (delta: -91.6MB). 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: 26]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5-L7] struct dummy { int a, b; } global = {0, 1}; VAL [\old(global)={51:50}, global={4:0}] [L16] struct dummy *pd = &global; VAL [global={4:0}, pd={4:0}] [L18] CALL assign(&pd->b, &pd->b) VAL [global={4:0}, pa={4:4}, pb={4:4}] [L11] EXPR \read(*pb) [L11] *pa = *pb [L18] RET assign(&pd->b, &pd->b) VAL [global={4:0}, pd={4:0}] [L20] EXPR pd->a [L20] EXPR global.b VAL [global.b=1, global={4:0}, pd->a=0, pd={4:0}] [L20] COND TRUE pd->a != global.b [L26] reach_error() VAL [global={4:0}, pd={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2023-03-31 00:08:17,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...