/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/increased_bounds/weaver_chl-word-trans.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:51:49,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:51:49,327 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:51:49,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:51:49,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:51:49,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:51:49,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:51:49,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:51:49,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:51:49,367 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:51:49,368 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:51:49,368 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:51:49,370 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:51:49,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:51:49,371 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:51:49,371 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:51:49,372 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:51:49,372 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:51:49,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:51:49,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:51:49,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:51:49,373 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:51:49,373 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:51:49,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:51:49,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:51:49,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:51:49,375 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:51:49,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:51:49,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:51:49,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:51:49,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:51:49,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:51:49,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:51:49,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:51:49,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:51:49,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:51:49,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:51:49,378 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:51:49,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:51:49,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:51:49,378 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:51:49,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:51:49,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:51:49,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:51:49,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:51:49,634 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:51:49,635 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:51:49,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-word-trans.wvr_bound2.c [2023-08-03 19:51:50,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:51:50,991 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:51:50,992 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-word-trans.wvr_bound2.c [2023-08-03 19:51:51,001 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd20729fa/efac3d88a0304f87bdc0403546aa8b77/FLAG704767b80 [2023-08-03 19:51:51,016 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd20729fa/efac3d88a0304f87bdc0403546aa8b77 [2023-08-03 19:51:51,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:51:51,023 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:51:51,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:51:51,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:51:51,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:51:51,028 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bbf4a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51, skipping insertion in model container [2023-08-03 19:51:51,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,063 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:51:51,214 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-word-trans.wvr_bound2.c[3535,3548] [2023-08-03 19:51:51,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:51:51,227 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:51:51,251 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-word-trans.wvr_bound2.c[3535,3548] [2023-08-03 19:51:51,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:51:51,266 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:51:51,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51 WrapperNode [2023-08-03 19:51:51,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:51:51,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:51:51,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:51:51,268 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:51:51,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,305 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 229 [2023-08-03 19:51:51,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:51:51,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:51:51,306 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:51:51,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:51:51,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,333 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,335 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:51:51,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:51:51,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:51:51,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:51:51,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (1/1) ... [2023-08-03 19:51:51,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:51:51,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:51,386 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 19:51:51,393 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 19:51:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:51:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:51:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:51:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:51:51,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:51:51,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:51:51,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:51:51,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:51:51,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:51:51,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:51:51,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:51:51,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 19:51:51,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:51:51,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:51:51,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:51:51,426 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 19:51:51,518 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:51:51,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:51:51,926 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:51:51,935 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:51:51,935 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 19:51:51,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:51:51 BoogieIcfgContainer [2023-08-03 19:51:51,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:51:51,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:51:51,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:51:51,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:51:51,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:51:51" (1/3) ... [2023-08-03 19:51:51,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1a1956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:51:51, skipping insertion in model container [2023-08-03 19:51:51,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:51:51" (2/3) ... [2023-08-03 19:51:51,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1a1956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:51:51, skipping insertion in model container [2023-08-03 19:51:51,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:51:51" (3/3) ... [2023-08-03 19:51:51,944 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-word-trans.wvr_bound2.c [2023-08-03 19:51:51,950 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:51:51,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:51:51,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:51:51,959 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:51:52,050 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:51:52,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 339 transitions, 720 flow [2023-08-03 19:51:52,389 INFO L124 PetriNetUnfolderBase]: 129/887 cut-off events. [2023-08-03 19:51:52,390 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:51:52,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 887 events. 129/887 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4474 event pairs, 0 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 511. Up to 16 conditions per place. [2023-08-03 19:51:52,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 339 transitions, 720 flow [2023-08-03 19:51:52,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 303 places, 339 transitions, 720 flow [2023-08-03 19:51:52,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:51:52,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 303 places, 339 transitions, 720 flow [2023-08-03 19:51:52,444 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 303 places, 339 transitions, 720 flow [2023-08-03 19:51:52,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 339 transitions, 720 flow [2023-08-03 19:51:52,580 INFO L124 PetriNetUnfolderBase]: 129/887 cut-off events. [2023-08-03 19:51:52,580 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:51:52,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 887 events. 129/887 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4474 event pairs, 0 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 511. Up to 16 conditions per place. [2023-08-03 19:51:52,614 INFO L119 LiptonReduction]: Number of co-enabled transitions 19260 [2023-08-03 19:52:00,738 INFO L134 LiptonReduction]: Checked pairs total: 37512 [2023-08-03 19:52:00,738 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-08-03 19:52:00,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:52:00,756 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;@7aa4a53a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:52:00,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:52:00,778 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:52:00,778 INFO L124 PetriNetUnfolderBase]: 8/43 cut-off events. [2023-08-03 19:52:00,778 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:52:00,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:52:00,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:52:00,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:52:00,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:52:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1653759281, now seen corresponding path program 1 times [2023-08-03 19:52:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:52:00,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411698343] [2023-08-03 19:52:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:52:00,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:52:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:52:00,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:52:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:52:00,998 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:52:01,001 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:52:01,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:52:01,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:52:01,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:52:01,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:52:01,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:52:01,005 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:52:01,011 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:52:01,011 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:52:01,072 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:52:01,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 441 transitions, 972 flow [2023-08-03 19:52:02,159 INFO L124 PetriNetUnfolderBase]: 976/4756 cut-off events. [2023-08-03 19:52:02,160 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:52:02,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 4756 events. 976/4756 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 39046 event pairs, 22 based on Foata normal form. 0/4024 useless extension candidates. Maximal degree in co-relation 2893. Up to 192 conditions per place. [2023-08-03 19:52:02,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 387 places, 441 transitions, 972 flow [2023-08-03 19:52:02,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 387 places, 441 transitions, 972 flow [2023-08-03 19:52:02,373 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:52:02,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 387 places, 441 transitions, 972 flow [2023-08-03 19:52:02,374 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 387 places, 441 transitions, 972 flow [2023-08-03 19:52:02,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 441 transitions, 972 flow [2023-08-03 19:52:03,237 INFO L124 PetriNetUnfolderBase]: 976/4756 cut-off events. [2023-08-03 19:52:03,237 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:52:03,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 4756 events. 976/4756 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 39046 event pairs, 22 based on Foata normal form. 0/4024 useless extension candidates. Maximal degree in co-relation 2893. Up to 192 conditions per place. [2023-08-03 19:52:03,551 INFO L119 LiptonReduction]: Number of co-enabled transitions 58500 [2023-08-03 19:52:12,898 INFO L134 LiptonReduction]: Checked pairs total: 139207 [2023-08-03 19:52:12,898 INFO L136 LiptonReduction]: Total number of compositions: 397 [2023-08-03 19:52:12,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:52:12,901 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;@7aa4a53a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:52:12,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:52:12,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:52:12,906 INFO L124 PetriNetUnfolderBase]: 8/42 cut-off events. [2023-08-03 19:52:12,906 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:52:12,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:52:12,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:52:12,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:52:12,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:52:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1846480416, now seen corresponding path program 1 times [2023-08-03 19:52:12,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:52:12,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480565215] [2023-08-03 19:52:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:52:12,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:52:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:52:13,063 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 19:52:13,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:52:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480565215] [2023-08-03 19:52:13,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480565215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:52:13,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:52:13,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:52:13,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923267591] [2023-08-03 19:52:13,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:52:13,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:52:13,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:52:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:52:13,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:52:13,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 838 [2023-08-03 19:52:13,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 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 19:52:13,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:52:13,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 838 [2023-08-03 19:52:13,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand