/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_28_buggy_simple_loop1_vf_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:23:41,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:23:41,836 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:23:41,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:23:41,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:23:41,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:23:41,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:23:41,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:23:41,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:23:41,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:23:41,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:23:41,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:23:41,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:23:41,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:23:41,880 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:23:41,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:23:41,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:23:41,880 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:23:41,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:23:41,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:23:41,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:23:41,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:23:41,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:23:41,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:23:41,881 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:23:41,882 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:23:41,882 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:23:41,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:23:41,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:23:41,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:23:41,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:23:41,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:23:41,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:23:41,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:23:41,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:23:41,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:23:41,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:23:41,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:23:41,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:23:41,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:23:41,885 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:23:41,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:23:42,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:23:42,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:23:42,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:23:42,065 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:23:42,066 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:23:42,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_28_buggy_simple_loop1_vf_bound2.i [2023-08-04 04:23:42,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:23:43,183 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:23:43,184 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_28_buggy_simple_loop1_vf_bound2.i [2023-08-04 04:23:43,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d89b64183/884bb38d3ca7458a9491ad2b81380804/FLAGa0ac8fd04 [2023-08-04 04:23:43,200 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d89b64183/884bb38d3ca7458a9491ad2b81380804 [2023-08-04 04:23:43,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:23:43,202 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:23:43,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:23:43,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:23:43,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:23:43,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7ec5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43, skipping insertion in model container [2023-08-04 04:23:43,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,242 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:23:43,470 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_28_buggy_simple_loop1_vf_bound2.i[30287,30300] [2023-08-04 04:23:43,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:23:43,482 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:23:43,498 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-04 04:23:43,499 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-04 04:23:43,514 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_28_buggy_simple_loop1_vf_bound2.i[30287,30300] [2023-08-04 04:23:43,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:23:43,537 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:23:43,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43 WrapperNode [2023-08-04 04:23:43,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:23:43,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:23:43,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:23:43,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:23:43,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,562 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-08-04 04:23:43,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:23:43,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:23:43,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:23:43,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:23:43,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,579 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:23:43,581 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:23:43,582 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:23:43,582 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:23:43,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (1/1) ... [2023-08-04 04:23:43,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:23:43,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:23:43,606 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) [2023-08-04 04:23:43,614 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 [2023-08-04 04:23:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-04 04:23:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-04 04:23:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:23:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:23:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:23:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:23:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:23:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:23:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:23:43,631 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:23:43,709 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:23:43,710 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:23:43,820 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:23:43,826 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:23:43,826 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 04:23:43,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:23:43 BoogieIcfgContainer [2023-08-04 04:23:43,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:23:43,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:23:43,829 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:23:43,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:23:43,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:23:43" (1/3) ... [2023-08-04 04:23:43,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:23:43, skipping insertion in model container [2023-08-04 04:23:43,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:23:43" (2/3) ... [2023-08-04 04:23:43,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:23:43, skipping insertion in model container [2023-08-04 04:23:43,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:23:43" (3/3) ... [2023-08-04 04:23:43,832 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_28_buggy_simple_loop1_vf_bound2.i [2023-08-04 04:23:43,837 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:23:43,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:23:43,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:23:43,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:23:43,896 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:23:43,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 71 transitions, 147 flow [2023-08-04 04:23:43,956 INFO L124 PetriNetUnfolderBase]: 10/81 cut-off events. [2023-08-04 04:23:43,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:23:43,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 10/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-08-04 04:23:43,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 71 transitions, 147 flow [2023-08-04 04:23:43,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 71 transitions, 147 flow [2023-08-04 04:23:43,967 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:23:43,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 71 transitions, 147 flow [2023-08-04 04:23:43,976 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 71 transitions, 147 flow [2023-08-04 04:23:43,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 71 transitions, 147 flow [2023-08-04 04:23:44,004 INFO L124 PetriNetUnfolderBase]: 10/81 cut-off events. [2023-08-04 04:23:44,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:23:44,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 10/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-08-04 04:23:44,006 INFO L119 LiptonReduction]: Number of co-enabled transitions 1376 [2023-08-04 04:23:45,350 INFO L134 LiptonReduction]: Checked pairs total: 1068 [2023-08-04 04:23:45,351 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-04 04:23:45,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:23:45,368 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;@7f864bc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:23:45,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:23:45,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:23:45,376 INFO L124 PetriNetUnfolderBase]: 5/18 cut-off events. [2023-08-04 04:23:45,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:23:45,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:23:45,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:23:45,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:23:45,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:23:45,382 INFO L85 PathProgramCache]: Analyzing trace with hash 813046871, now seen corresponding path program 1 times [2023-08-04 04:23:45,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:23:45,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384705125] [2023-08-04 04:23:45,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:23:45,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:23:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:23:45,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:23:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:23:45,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:23:45,541 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:23:45,541 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:23:45,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:23:45,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:23:45,543 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:23:45,545 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN (1/2) [2023-08-04 04:23:45,547 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-04 04:23:45,547 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:23:45,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:23:45 BasicIcfg [2023-08-04 04:23:45,559 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:23:45,560 INFO L158 Benchmark]: Toolchain (without parser) took 2357.35ms. Allocated memory is still 526.4MB. Free memory was 476.6MB in the beginning and 388.1MB in the end (delta: 88.5MB). Peak memory consumption was 90.0MB. Max. memory is 16.0GB. [2023-08-04 04:23:45,560 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 362.8MB. Free memory is still 314.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:23:45,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.09ms. Allocated memory is still 526.4MB. Free memory was 476.6MB in the beginning and 457.3MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:23:45,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.89ms. Allocated memory is still 526.4MB. Free memory was 457.3MB in the beginning and 455.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:23:45,561 INFO L158 Benchmark]: Boogie Preprocessor took 18.30ms. Allocated memory is still 526.4MB. Free memory was 455.5MB in the beginning and 453.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:23:45,561 INFO L158 Benchmark]: RCFGBuilder took 245.75ms. Allocated memory is still 526.4MB. Free memory was 453.9MB in the beginning and 441.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-04 04:23:45,561 INFO L158 Benchmark]: TraceAbstraction took 1730.22ms. Allocated memory is still 526.4MB. Free memory was 440.3MB in the beginning and 388.1MB in the end (delta: 52.2MB). Peak memory consumption was 54.3MB. Max. memory is 16.0GB. [2023-08-04 04:23:45,563 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 362.8MB. Free memory is still 314.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 335.09ms. Allocated memory is still 526.4MB. Free memory was 476.6MB in the beginning and 457.3MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 23.89ms. Allocated memory is still 526.4MB. Free memory was 457.3MB in the beginning and 455.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.30ms. Allocated memory is still 526.4MB. Free memory was 455.5MB in the beginning and 453.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 245.75ms. Allocated memory is still 526.4MB. Free memory was 453.9MB in the beginning and 441.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 1730.22ms. Allocated memory is still 526.4MB. Free memory was 440.3MB in the beginning and 388.1MB in the end (delta: 52.2MB). Peak memory consumption was 54.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 250]: Unsoundness Warning unspecified type, defaulting to int C: short [250] - GenericResultAtLocation [Line: 250]: Unsoundness Warning unspecified type, defaulting to int C: short [250] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 65 PlacesBefore, 15 PlacesAfterwards, 71 TransitionsBefore, 17 TransitionsAfterwards, 1376 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 61 TotalNumberOfCompositions, 1068 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1068, independent: 1068, independent conditional: 0, independent unconditional: 1068, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 689, independent: 689, independent conditional: 0, independent unconditional: 689, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1068, independent: 379, independent conditional: 0, independent unconditional: 379, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 689, unknown conditional: 0, unknown unconditional: 689] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; [L701] 0 int asdf=0; VAL [asdf=0, t={3:0}] [L701] COND TRUE 0 asdf<2 [L702] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, asdf=0, pthread_create(&t, 0, thr1, 0)=-1, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i