/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/pthread-atomic_lamport_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:07:53,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:07:53,942 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:07:53,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:07:53,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:07:53,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:07:53,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:07:53,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:07:53,966 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:07:53,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:07:53,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:07:53,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:07:53,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:07:53,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:07:53,975 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:07:53,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:07:53,975 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:07:53,975 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:07:53,976 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:07:53,976 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:07:53,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:07:53,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:07:53,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:07:53,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:07:53,976 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:07:53,977 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:07:53,977 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:07:53,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:07:53,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:07:53,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:07:53,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:07:53,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:07:53,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:07:53,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:07:53,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:07:53,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:07:53,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:07:53,980 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:07:53,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:07:53,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:07:53,980 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:07:53,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:07:54,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:07:54,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:07:54,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:07:54,141 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:07:54,141 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:07:54,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-atomic_lamport_bound2.i [2023-08-03 16:07:55,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:07:55,241 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:07:55,241 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-atomic_lamport_bound2.i [2023-08-03 16:07:55,249 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e182c496c/ba8348d293f44b44b26d27be7df145c9/FLAGc3f1e788d [2023-08-03 16:07:55,260 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e182c496c/ba8348d293f44b44b26d27be7df145c9 [2023-08-03 16:07:55,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:07:55,262 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:07:55,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:07:55,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:07:55,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:07:55,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d14e6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55, skipping insertion in model container [2023-08-03 16:07:55,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,308 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:07:55,425 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 16:07:55,481 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-atomic_lamport_bound2.i[32156,32169] [2023-08-03 16:07:55,485 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-atomic_lamport_bound2.i[34083,34096] [2023-08-03 16:07:55,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:07:55,495 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:07:55,504 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 16:07:55,508 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-03 16:07:55,509 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-03 16:07:55,519 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-atomic_lamport_bound2.i[32156,32169] [2023-08-03 16:07:55,521 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-atomic_lamport_bound2.i[34083,34096] [2023-08-03 16:07:55,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:07:55,539 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 16:07:55,540 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 16:07:55,540 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 16:07:55,544 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:07:55,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55 WrapperNode [2023-08-03 16:07:55,544 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:07:55,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:07:55,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:07:55,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:07:55,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,570 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 76 [2023-08-03 16:07:55,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:07:55,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:07:55,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:07:55,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:07:55,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:07:55,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:07:55,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:07:55,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:07:55,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (1/1) ... [2023-08-03 16:07:55,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:07:55,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:07:55,610 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 16:07:55,616 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 16:07:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:07:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-03 16:07:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-03 16:07:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 16:07:55,643 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 16:07:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:07:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 16:07:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:07:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:07:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:07:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:07:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 16:07:55,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:07:55,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:07:55,644 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 16:07:55,734 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:07:55,735 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:07:55,874 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:07:55,879 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:07:55,879 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-03 16:07:55,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:07:55 BoogieIcfgContainer [2023-08-03 16:07:55,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:07:55,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:07:55,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:07:55,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:07:55,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:07:55" (1/3) ... [2023-08-03 16:07:55,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2de87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:07:55, skipping insertion in model container [2023-08-03 16:07:55,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:07:55" (2/3) ... [2023-08-03 16:07:55,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2de87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:07:55, skipping insertion in model container [2023-08-03 16:07:55,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:07:55" (3/3) ... [2023-08-03 16:07:55,886 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-atomic_lamport_bound2.i [2023-08-03 16:07:55,891 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:07:55,896 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:07:55,897 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 16:07:55,897 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:07:55,988 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 16:07:56,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 159 transitions, 340 flow [2023-08-03 16:07:56,106 INFO L124 PetriNetUnfolderBase]: 58/305 cut-off events. [2023-08-03 16:07:56,107 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 16:07:56,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 305 events. 58/305 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1229 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 166. Up to 10 conditions per place. [2023-08-03 16:07:56,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 159 transitions, 340 flow [2023-08-03 16:07:56,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 159 transitions, 340 flow [2023-08-03 16:07:56,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:07:56,133 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 159 transitions, 340 flow [2023-08-03 16:07:56,136 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 159 transitions, 340 flow [2023-08-03 16:07:56,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 159 transitions, 340 flow [2023-08-03 16:07:56,168 INFO L124 PetriNetUnfolderBase]: 58/305 cut-off events. [2023-08-03 16:07:56,168 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 16:07:56,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 305 events. 58/305 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1229 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 166. Up to 10 conditions per place. [2023-08-03 16:07:56,175 INFO L119 LiptonReduction]: Number of co-enabled transitions 11610 [2023-08-03 16:07:57,582 INFO L134 LiptonReduction]: Checked pairs total: 26571 [2023-08-03 16:07:57,582 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-03 16:07:57,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:07:57,607 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;@1b8f22c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:07:57,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 16:07:57,613 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:07:57,613 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-08-03 16:07:57,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:07:57,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:07:57,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 16:07:57,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:07:57,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:07:57,618 INFO L85 PathProgramCache]: Analyzing trace with hash 639878799, now seen corresponding path program 1 times [2023-08-03 16:07:57,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:07:57,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716999734] [2023-08-03 16:07:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:07:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:07:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:07:57,733 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 16:07:57,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:07:57,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716999734] [2023-08-03 16:07:57,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716999734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:07:57,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:07:57,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:07:57,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917217145] [2023-08-03 16:07:57,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:07:57,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 16:07:57,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:07:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 16:07:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 16:07:57,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 259 [2023-08-03 16:07:57,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 79 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 139.5) internal successors, (279), 2 states have internal predecessors, (279), 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 16:07:57,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:07:57,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 259 [2023-08-03 16:07:57,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:07:58,123 INFO L124 PetriNetUnfolderBase]: 4077/6596 cut-off events. [2023-08-03 16:07:58,123 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-03 16:07:58,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12336 conditions, 6596 events. 4077/6596 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 40734 event pairs, 2354 based on Foata normal form. 90/4385 useless extension candidates. Maximal degree in co-relation 11548. Up to 5638 conditions per place. [2023-08-03 16:07:58,147 INFO L140 encePairwiseOnDemand]: 254/259 looper letters, 52 selfloop transitions, 0 changer transitions 0/74 dead transitions. [2023-08-03 16:07:58,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 274 flow [2023-08-03 16:07:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 16:07:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 16:07:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 331 transitions. [2023-08-03 16:07:58,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638996138996139 [2023-08-03 16:07:58,156 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 331 transitions. [2023-08-03 16:07:58,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 331 transitions. [2023-08-03 16:07:58,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:07:58,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 331 transitions. [2023-08-03 16:07:58,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 165.5) internal successors, (331), 2 states have internal predecessors, (331), 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 16:07:58,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 16:07:58,163 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 16:07:58,165 INFO L175 Difference]: Start difference. First operand has 63 places, 79 transitions, 180 flow. Second operand 2 states and 331 transitions. [2023-08-03 16:07:58,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 274 flow [2023-08-03 16:07:58,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:07:58,169 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 170 flow [2023-08-03 16:07:58,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=170, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2023-08-03 16:07:58,173 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2023-08-03 16:07:58,173 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 170 flow [2023-08-03 16:07:58,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.5) internal successors, (279), 2 states have internal predecessors, (279), 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 16:07:58,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:07:58,174 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:07:58,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:07:58,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:07:58,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:07:58,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1638583846, now seen corresponding path program 1 times [2023-08-03 16:07:58,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:07:58,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723805144] [2023-08-03 16:07:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:07:58,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:07:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:07:58,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:07:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:07:58,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:07:58,223 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:07:58,224 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 16:07:58,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 16:07:58,226 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 16:07:58,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 16:07:58,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-03 16:07:58,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 16:07:58,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:07:58,228 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:07:58,230 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:07:58,230 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:07:58,269 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 16:07:58,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 251 transitions, 550 flow [2023-08-03 16:07:58,357 INFO L124 PetriNetUnfolderBase]: 197/937 cut-off events. [2023-08-03 16:07:58,357 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 16:07:58,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 937 events. 197/937 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5124 event pairs, 1 based on Foata normal form. 0/745 useless extension candidates. Maximal degree in co-relation 571. Up to 32 conditions per place. [2023-08-03 16:07:58,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 251 transitions, 550 flow [2023-08-03 16:07:58,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 251 transitions, 550 flow [2023-08-03 16:07:58,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:07:58,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 251 transitions, 550 flow [2023-08-03 16:07:58,379 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 251 transitions, 550 flow [2023-08-03 16:07:58,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 251 transitions, 550 flow [2023-08-03 16:07:58,457 INFO L124 PetriNetUnfolderBase]: 197/937 cut-off events. [2023-08-03 16:07:58,457 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 16:07:58,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 937 events. 197/937 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5124 event pairs, 1 based on Foata normal form. 0/745 useless extension candidates. Maximal degree in co-relation 571. Up to 32 conditions per place. [2023-08-03 16:07:58,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 39732 [2023-08-03 16:08:00,119 INFO L134 LiptonReduction]: Checked pairs total: 104445 [2023-08-03 16:08:00,120 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-03 16:08:00,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:08:00,122 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;@1b8f22c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:08:00,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 16:08:00,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:08:00,123 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-08-03 16:08:00,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:08:00,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:08:00,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 16:08:00,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-08-03 16:08:00,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:08:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1106392736, now seen corresponding path program 1 times [2023-08-03 16:08:00,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:08:00,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841630948] [2023-08-03 16:08:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:08:00,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:08:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:08:00,161 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 16:08:00,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:08:00,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841630948] [2023-08-03 16:08:00,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841630948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:08:00,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:08:00,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:08:00,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730866420] [2023-08-03 16:08:00,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:08:00,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 16:08:00,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:08:00,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 16:08:00,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 16:08:00,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 399 [2023-08-03 16:08:00,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 134 transitions, 316 flow. Second operand has 2 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 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 16:08:00,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:08:00,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 399 [2023-08-03 16:08:00,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand