/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_10-ptrmunge_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:17:08,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:17:08,256 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:17:08,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:17:08,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:17:08,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:17:08,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:17:08,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:17:08,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:17:08,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:17:08,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:17:08,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:17:08,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:17:08,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:17:08,296 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:17:08,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:17:08,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:17:08,296 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:17:08,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:17:08,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:17:08,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:17:08,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:17:08,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:17:08,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:17:08,298 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:17:08,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:17:08,298 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:17:08,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:17:08,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:17:08,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:17:08,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:17:08,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:17:08,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:17:08,301 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:17:08,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:17:08,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:17:08,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:17:08,301 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:17:08,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:17:08,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:17:08,302 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:17:08,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:17:08,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:17:08,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:17:08,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:17:08,529 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:17:08,529 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:17:08,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_10-ptrmunge_racefree_bound2.i [2023-08-03 15:17:09,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:17:09,896 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:17:09,896 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_10-ptrmunge_racefree_bound2.i [2023-08-03 15:17:09,907 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736c86f29/830e57a3f2d4457f8f6e3bd57b8df0f0/FLAG819d4ad6f [2023-08-03 15:17:09,918 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736c86f29/830e57a3f2d4457f8f6e3bd57b8df0f0 [2023-08-03 15:17:09,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:17:09,925 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:17:09,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:17:09,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:17:09,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:17:09,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:17:09" (1/1) ... [2023-08-03 15:17:09,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ed1aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:09, skipping insertion in model container [2023-08-03 15:17:09,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:17:09" (1/1) ... [2023-08-03 15:17:09,969 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:17:10,230 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/goblint-regression_28-race_reach_10-ptrmunge_racefree_bound2.i[30176,30189] [2023-08-03 15:17:10,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:17:10,269 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:17:10,291 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:17:10,294 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:17:10,303 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/goblint-regression_28-race_reach_10-ptrmunge_racefree_bound2.i[30176,30189] [2023-08-03 15:17:10,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:17:10,341 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:17:10,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10 WrapperNode [2023-08-03 15:17:10,342 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:17:10,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:17:10,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:17:10,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:17:10,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,379 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 220 [2023-08-03 15:17:10,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:17:10,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:17:10,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:17:10,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:17:10,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,397 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:17:10,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:17:10,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:17:10,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:17:10,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (1/1) ... [2023-08-03 15:17:10,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:17:10,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:17:10,442 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) [2023-08-03 15:17:10,471 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 [2023-08-03 15:17:10,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:17:10,482 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-03 15:17:10,482 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-03 15:17:10,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:17:10,483 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:17:10,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:17:10,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:17:10,485 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-03 15:17:10,485 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-03 15:17:10,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:17:10,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:17:10,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:17:10,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:17:10,487 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:17:10,622 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:17:10,624 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:17:10,892 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:17:10,900 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:17:10,900 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-03 15:17:10,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:17:10 BoogieIcfgContainer [2023-08-03 15:17:10,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:17:10,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:17:10,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:17:10,907 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:17:10,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:17:09" (1/3) ... [2023-08-03 15:17:10,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70723463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:17:10, skipping insertion in model container [2023-08-03 15:17:10,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:10" (2/3) ... [2023-08-03 15:17:10,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70723463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:17:10, skipping insertion in model container [2023-08-03 15:17:10,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:17:10" (3/3) ... [2023-08-03 15:17:10,911 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_10-ptrmunge_racefree_bound2.i [2023-08-03 15:17:10,917 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:17:10,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:17:10,925 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 15:17:10,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:17:11,032 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 15:17:11,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 217 transitions, 456 flow [2023-08-03 15:17:11,153 INFO L124 PetriNetUnfolderBase]: 58/382 cut-off events. [2023-08-03 15:17:11,153 INFO L125 PetriNetUnfolderBase]: For 8/12 co-relation queries the response was YES. [2023-08-03 15:17:11,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 382 events. 58/382 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1620 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-08-03 15:17:11,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 217 transitions, 456 flow [2023-08-03 15:17:11,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 217 transitions, 456 flow [2023-08-03 15:17:11,169 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:17:11,176 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 217 transitions, 456 flow [2023-08-03 15:17:11,178 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 217 transitions, 456 flow [2023-08-03 15:17:11,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 217 transitions, 456 flow [2023-08-03 15:17:11,235 INFO L124 PetriNetUnfolderBase]: 58/382 cut-off events. [2023-08-03 15:17:11,236 INFO L125 PetriNetUnfolderBase]: For 8/12 co-relation queries the response was YES. [2023-08-03 15:17:11,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 382 events. 58/382 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1620 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2023-08-03 15:17:11,254 INFO L119 LiptonReduction]: Number of co-enabled transitions 18788 [2023-08-03 15:17:15,556 INFO L134 LiptonReduction]: Checked pairs total: 33979 [2023-08-03 15:17:15,556 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-03 15:17:15,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:17:15,573 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;@4441db6d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:17:15,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 15:17:15,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:17:15,578 INFO L124 PetriNetUnfolderBase]: 2/29 cut-off events. [2023-08-03 15:17:15,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:17:15,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:15,579 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:17:15,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:17:15,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash 132924624, now seen corresponding path program 1 times [2023-08-03 15:17:15,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:15,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082903913] [2023-08-03 15:17:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:15,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:17:15,688 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:17:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:17:15,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:17:15,727 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:17:15,728 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 15:17:15,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 15:17:15,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-03 15:17:15,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-03 15:17:15,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-03 15:17:15,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 15:17:15,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:17:15,731 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 15:17:15,733 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:17:15,734 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:17:15,779 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 15:17:15,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 345 transitions, 738 flow [2023-08-03 15:17:15,969 INFO L124 PetriNetUnfolderBase]: 197/1105 cut-off events. [2023-08-03 15:17:15,969 INFO L125 PetriNetUnfolderBase]: For 72/81 co-relation queries the response was YES. [2023-08-03 15:17:15,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 1105 events. 197/1105 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6613 event pairs, 1 based on Foata normal form. 0/913 useless extension candidates. Maximal degree in co-relation 673. Up to 32 conditions per place. [2023-08-03 15:17:15,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 345 transitions, 738 flow [2023-08-03 15:17:16,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 345 transitions, 738 flow [2023-08-03 15:17:16,004 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:17:16,004 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 345 transitions, 738 flow [2023-08-03 15:17:16,005 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 345 transitions, 738 flow [2023-08-03 15:17:16,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 345 transitions, 738 flow [2023-08-03 15:17:16,196 INFO L124 PetriNetUnfolderBase]: 197/1105 cut-off events. [2023-08-03 15:17:16,197 INFO L125 PetriNetUnfolderBase]: For 72/81 co-relation queries the response was YES. [2023-08-03 15:17:16,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 1105 events. 197/1105 cut-off events. For 72/81 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6613 event pairs, 1 based on Foata normal form. 0/913 useless extension candidates. Maximal degree in co-relation 673. Up to 32 conditions per place. [2023-08-03 15:17:16,267 INFO L119 LiptonReduction]: Number of co-enabled transitions 69784 [2023-08-03 15:17:21,467 INFO L134 LiptonReduction]: Checked pairs total: 148412 [2023-08-03 15:17:21,467 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-08-03 15:17:21,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:17:21,475 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;@4441db6d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:17:21,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 15:17:21,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:17:21,479 INFO L124 PetriNetUnfolderBase]: 6/42 cut-off events. [2023-08-03 15:17:21,479 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:17:21,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:21,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:21,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-08-03 15:17:21,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1340889123, now seen corresponding path program 1 times [2023-08-03 15:17:21,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:21,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088272838] [2023-08-03 15:17:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:17:21,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:21,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088272838] [2023-08-03 15:17:21,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088272838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:21,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:21,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:17:21,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929464512] [2023-08-03 15:17:21,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:21,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:17:21,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:21,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:17:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:17:22,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 593 [2023-08-03 15:17:22,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 144 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 265.4) internal successors, (1327), 5 states have internal predecessors, (1327), 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) [2023-08-03 15:17:22,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:22,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 593 [2023-08-03 15:17:22,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand