/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:06:09,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:06:09,727 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:06:09,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:06:09,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:06:09,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:06:09,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:06:09,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:06:09,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:06:09,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:06:09,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:06:09,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:06:09,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:06:09,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:06:09,776 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:06:09,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:06:09,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:06:09,776 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:06:09,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:06:09,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:06:09,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:06:09,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:06:09,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:06:09,778 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:06:09,778 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:06:09,778 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:06:09,779 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:06:09,779 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:06:09,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:06:09,780 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:06:09,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:06:09,781 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:06:09,781 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:06:09,781 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:06:09,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:06:09,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:06:09,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:06:09,783 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:06:09,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:06:09,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:06:09,783 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:06:09,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:06:10,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:06:10,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:06:10,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:06:10,026 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:06:10,028 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:06:10,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005.opt_bound2.i [2023-08-03 23:06:11,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:06:11,333 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:06:11,333 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005.opt_bound2.i [2023-08-03 23:06:11,348 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d33a20d1/299719d20d114e5ea546a5b12bd490b0/FLAGa90e306c2 [2023-08-03 23:06:11,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d33a20d1/299719d20d114e5ea546a5b12bd490b0 [2023-08-03 23:06:11,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:06:11,362 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:06:11,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:06:11,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:06:11,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:06:11,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b13b2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11, skipping insertion in model container [2023-08-03 23:06:11,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,408 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:06:11,559 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005.opt_bound2.i[944,957] [2023-08-03 23:06:11,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:06:11,794 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:06:11,803 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix005.opt_bound2.i[944,957] [2023-08-03 23:06:11,810 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:06:11,811 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:06:11,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:06:11,862 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:06:11,862 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:06:11,868 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:06:11,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11 WrapperNode [2023-08-03 23:06:11,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:06:11,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:06:11,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:06:11,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:06:11,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,912 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 198 [2023-08-03 23:06:11,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:06:11,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:06:11,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:06:11,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:06:11,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:06:11,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:06:11,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:06:11,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:06:11,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (1/1) ... [2023-08-03 23:06:11,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:06:11,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:06:11,978 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 23:06:12,002 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 23:06:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:06:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:06:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:06:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:06:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:06:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:06:12,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:06:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:06:12,033 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:06:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:06:12,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:06:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 23:06:12,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 23:06:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:06:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:06:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:06:12,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:06:12,036 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 23:06:12,198 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:06:12,200 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:06:12,531 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:06:12,619 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:06:12,619 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 23:06:12,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:06:12 BoogieIcfgContainer [2023-08-03 23:06:12,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:06:12,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:06:12,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:06:12,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:06:12,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:06:11" (1/3) ... [2023-08-03 23:06:12,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5798f5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:06:12, skipping insertion in model container [2023-08-03 23:06:12,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:06:11" (2/3) ... [2023-08-03 23:06:12,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5798f5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:06:12, skipping insertion in model container [2023-08-03 23:06:12,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:06:12" (3/3) ... [2023-08-03 23:06:12,628 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix005.opt_bound2.i [2023-08-03 23:06:12,634 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:06:12,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:06:12,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:06:12,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:06:12,682 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:06:12,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-03 23:06:12,880 INFO L124 PetriNetUnfolderBase]: 62/938 cut-off events. [2023-08-03 23:06:12,880 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:06:12,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 938 events. 62/938 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5812 event pairs, 0 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 551. Up to 32 conditions per place. [2023-08-03 23:06:12,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-03 23:06:12,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 127 transitions, 274 flow [2023-08-03 23:06:12,895 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:06:12,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-03 23:06:12,905 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-03 23:06:12,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 127 transitions, 274 flow [2023-08-03 23:06:12,963 INFO L124 PetriNetUnfolderBase]: 14/442 cut-off events. [2023-08-03 23:06:12,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:06:12,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 442 events. 14/442 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2045 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2023-08-03 23:06:12,971 INFO L119 LiptonReduction]: Number of co-enabled transitions 2252 [2023-08-03 23:06:16,451 INFO L134 LiptonReduction]: Checked pairs total: 4829 [2023-08-03 23:06:16,452 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-03 23:06:16,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:06:16,468 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;@2c6dba8d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:06:16,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:06:16,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:06:16,474 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 23:06:16,474 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:06:16,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:06:16,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:06:16,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:06:16,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:06:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1871682352, now seen corresponding path program 1 times [2023-08-03 23:06:16,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:06:16,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751725689] [2023-08-03 23:06:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:06:16,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:06:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:06:16,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:06:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:06:16,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:06:16,612 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:06:16,612 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 23:06:16,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 23:06:16,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 23:06:16,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 23:06:16,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:06:16,615 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:06:16,617 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:06:16,618 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:06:16,618 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:06:16,660 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:06:16,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 190 transitions, 428 flow [2023-08-03 23:06:17,250 INFO L124 PetriNetUnfolderBase]: 282/4370 cut-off events. [2023-08-03 23:06:17,250 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:06:17,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4659 conditions, 4370 events. 282/4370 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42648 event pairs, 0 based on Foata normal form. 0/3833 useless extension candidates. Maximal degree in co-relation 3138. Up to 162 conditions per place. [2023-08-03 23:06:17,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 190 transitions, 428 flow [2023-08-03 23:06:17,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 159 transitions, 366 flow [2023-08-03 23:06:17,283 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:06:17,283 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 159 transitions, 366 flow [2023-08-03 23:06:17,283 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 159 transitions, 366 flow [2023-08-03 23:06:17,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 159 transitions, 366 flow [2023-08-03 23:06:17,478 INFO L124 PetriNetUnfolderBase]: 39/1859 cut-off events. [2023-08-03 23:06:17,478 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:06:17,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 1859 events. 39/1859 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14888 event pairs, 0 based on Foata normal form. 0/1727 useless extension candidates. Maximal degree in co-relation 1464. Up to 81 conditions per place. [2023-08-03 23:06:17,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 6276 [2023-08-03 23:06:21,022 INFO L134 LiptonReduction]: Checked pairs total: 20156 [2023-08-03 23:06:21,022 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-03 23:06:21,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:06:21,025 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;@2c6dba8d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:06:21,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:06:21,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:06:21,034 INFO L124 PetriNetUnfolderBase]: 0/103 cut-off events. [2023-08-03 23:06:21,034 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-03 23:06:21,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:06:21,034 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:06:21,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:06:21,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:06:21,035 INFO L85 PathProgramCache]: Analyzing trace with hash -331687871, now seen corresponding path program 1 times [2023-08-03 23:06:21,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:06:21,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786082340] [2023-08-03 23:06:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:06:21,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:06:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:06:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:06:21,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:06:21,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786082340] [2023-08-03 23:06:21,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786082340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:06:21,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:06:21,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:06:21,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156711304] [2023-08-03 23:06:21,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:06:21,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:06:21,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:06:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:06:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:06:21,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 298 [2023-08-03 23:06:21,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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 23:06:21,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:06:21,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 298 [2023-08-03 23:06:21,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand