/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_mix021.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:22:09,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:22:09,784 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:22:09,790 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:22:09,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:22:09,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:22:09,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:22:09,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:22:09,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:22:09,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:22:09,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:22:09,821 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:22:09,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:22:09,822 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:22:09,822 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:22:09,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:22:09,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:22:09,823 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:22:09,824 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:22:09,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:22:09,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:22:09,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:22:09,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:22:09,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:22:09,834 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:22:09,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:22:09,834 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:22:09,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:22:09,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:22:09,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:22:09,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:22:09,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:22:09,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:22:09,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:22:09,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:22:09,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:22:09,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:22:09,838 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:22:09,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:22:09,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:22:09,839 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:22:09,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:22:10,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:22:10,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:22:10,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:22:10,111 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:22:10,111 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:22:10,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix021.opt_bound2.i [2023-08-03 23:22:11,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:22:11,500 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:22:11,501 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix021.opt_bound2.i [2023-08-03 23:22:11,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a933673b/36f57f6edfaf4c64bec9bbabdb2d6d78/FLAGf1c7eb93b [2023-08-03 23:22:11,530 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a933673b/36f57f6edfaf4c64bec9bbabdb2d6d78 [2023-08-03 23:22:11,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:22:11,535 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:22:11,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:22:11,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:22:11,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:22:11,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:22:11" (1/1) ... [2023-08-03 23:22:11,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19bbb04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:11, skipping insertion in model container [2023-08-03 23:22:11,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:22:11" (1/1) ... [2023-08-03 23:22:11,586 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:22:11,726 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_mix021.opt_bound2.i[944,957] [2023-08-03 23:22:11,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:22:11,933 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:22:11,946 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_mix021.opt_bound2.i[944,957] [2023-08-03 23:22:11,960 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:22:11,962 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:22:12,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:22:12,032 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:22:12,032 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:22:12,038 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:22:12,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12 WrapperNode [2023-08-03 23:22:12,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:22:12,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:22:12,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:22:12,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:22:12,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,061 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,094 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 196 [2023-08-03 23:22:12,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:22:12,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:22:12,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:22:12,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:22:12,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:22:12,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:22:12,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:22:12,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:22:12,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (1/1) ... [2023-08-03 23:22:12,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:22:12,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:22:12,177 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 23:22:12,185 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 23:22:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:22:12,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:22:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:22:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:22:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:22:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:22:12,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:22:12,231 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:22:12,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:22:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:22:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:22:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 23:22:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 23:22:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:22:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:22:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:22:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:22:12,234 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 23:22:12,400 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:22:12,402 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:22:12,725 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:22:12,830 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:22:12,830 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 23:22:12,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:22:12 BoogieIcfgContainer [2023-08-03 23:22:12,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:22:12,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:22:12,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:22:12,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:22:12,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:22:11" (1/3) ... [2023-08-03 23:22:12,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37514bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:22:12, skipping insertion in model container [2023-08-03 23:22:12,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:22:12" (2/3) ... [2023-08-03 23:22:12,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37514bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:22:12, skipping insertion in model container [2023-08-03 23:22:12,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:22:12" (3/3) ... [2023-08-03 23:22:12,840 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix021.opt_bound2.i [2023-08-03 23:22:12,847 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:22:12,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:22:12,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:22:12,856 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:22:12,903 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:22:12,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 330 flow [2023-08-03 23:22:13,158 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-03 23:22:13,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:22:13,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5773 event pairs, 0 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 545. Up to 32 conditions per place. [2023-08-03 23:22:13,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 155 transitions, 330 flow [2023-08-03 23:22:13,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 124 transitions, 268 flow [2023-08-03 23:22:13,177 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:22:13,191 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 124 transitions, 268 flow [2023-08-03 23:22:13,194 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 124 transitions, 268 flow [2023-08-03 23:22:13,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 124 transitions, 268 flow [2023-08-03 23:22:13,240 INFO L124 PetriNetUnfolderBase]: 14/436 cut-off events. [2023-08-03 23:22:13,240 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:22:13,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 436 events. 14/436 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2013 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 297. Up to 16 conditions per place. [2023-08-03 23:22:13,248 INFO L119 LiptonReduction]: Number of co-enabled transitions 2160 [2023-08-03 23:22:16,650 INFO L134 LiptonReduction]: Checked pairs total: 4738 [2023-08-03 23:22:16,650 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 23:22:16,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:22:16,668 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;@489c4ddd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:22:16,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:22:16,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:22:16,673 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-03 23:22:16,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:22:16,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:22:16,674 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:22:16,675 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 23:22:16,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:22:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1575940051, now seen corresponding path program 1 times [2023-08-03 23:22:16,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:22:16,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315486405] [2023-08-03 23:22:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:16,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:22:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:22:16,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:22:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:22:16,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:22:16,849 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:22:16,850 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 23:22:16,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 23:22:16,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 23:22:16,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 23:22:16,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:22:16,855 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:22:16,861 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:22:16,862 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:22:16,862 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:22:16,923 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:22:16,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 186 transitions, 420 flow [2023-08-03 23:22:17,541 INFO L124 PetriNetUnfolderBase]: 282/4350 cut-off events. [2023-08-03 23:22:17,542 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:22:17,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4639 conditions, 4350 events. 282/4350 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42337 event pairs, 0 based on Foata normal form. 0/3813 useless extension candidates. Maximal degree in co-relation 3118. Up to 162 conditions per place. [2023-08-03 23:22:17,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 186 transitions, 420 flow [2023-08-03 23:22:17,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 155 transitions, 358 flow [2023-08-03 23:22:17,587 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:22:17,587 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 155 transitions, 358 flow [2023-08-03 23:22:17,587 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 155 transitions, 358 flow [2023-08-03 23:22:17,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 155 transitions, 358 flow [2023-08-03 23:22:17,816 INFO L124 PetriNetUnfolderBase]: 39/1839 cut-off events. [2023-08-03 23:22:17,816 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:22:17,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 1839 events. 39/1839 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14626 event pairs, 0 based on Foata normal form. 0/1707 useless extension candidates. Maximal degree in co-relation 1444. Up to 81 conditions per place. [2023-08-03 23:22:17,849 INFO L119 LiptonReduction]: Number of co-enabled transitions 5976 [2023-08-03 23:22:21,167 INFO L134 LiptonReduction]: Checked pairs total: 18297 [2023-08-03 23:22:21,167 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-03 23:22:21,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:22:21,170 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;@489c4ddd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:22:21,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:22:21,179 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:22:21,179 INFO L124 PetriNetUnfolderBase]: 0/91 cut-off events. [2023-08-03 23:22:21,179 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 23:22:21,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:22:21,180 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 23:22:21,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:22:21,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:22:21,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2042328693, now seen corresponding path program 1 times [2023-08-03 23:22:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:22:21,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263443818] [2023-08-03 23:22:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:21,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:22:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:22:21,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:22:21,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263443818] [2023-08-03 23:22:21,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263443818] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:22:21,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43864286] [2023-08-03 23:22:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:21,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:22:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:22:21,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:22:21,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 23:22:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:21,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:22:21,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:22:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:22:21,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:22:21,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43864286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:22:21,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:22:21,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:22:21,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040075995] [2023-08-03 23:22:21,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:22:21,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:22:21,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:22:21,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:22:21,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:22:21,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 292 [2023-08-03 23:22:21,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 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 23:22:21,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:22:21,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 292 [2023-08-03 23:22:21,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand