/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-wmm_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:50:01,384 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:50:01,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:50:01,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:50:01,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:50:01,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:50:01,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:50:01,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:50:01,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:50:01,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:50:01,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:50:01,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:50:01,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:50:01,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:50:01,474 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:50:01,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:50:01,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:50:01,474 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:50:01,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:50:01,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:50:01,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:50:01,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:50:01,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:50:01,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:50:01,476 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:50:01,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:50:01,477 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:50:01,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:50:01,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:50:01,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:50:01,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:50:01,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:50:01,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:50:01,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:50:01,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:50:01,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:50:01,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:50:01,479 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:50:01,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:50:01,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:50:01,479 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:50:01,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:50:01,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:50:01,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:50:01,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:50:01,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:50:01,697 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:50:01,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 17:50:02,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:50:02,929 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:50:02,930 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 17:50:02,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/940b02441/6a0d5681b0d24da9858ae614a5a00c6b/FLAG3fb0e51f5 [2023-08-03 17:50:02,970 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/940b02441/6a0d5681b0d24da9858ae614a5a00c6b [2023-08-03 17:50:02,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:50:02,973 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:50:02,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:50:02,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:50:02,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:50:02,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:50:02" (1/1) ... [2023-08-03 17:50:02,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a41bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:02, skipping insertion in model container [2023-08-03 17:50:02,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:50:02" (1/1) ... [2023-08-03 17:50:03,029 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:50:03,181 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_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-03 17:50:03,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:50:03,381 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:50:03,393 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_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-03 17:50:03,402 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:50:03,403 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:50:03,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:50:03,437 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:50:03,437 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:50:03,441 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:50:03,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03 WrapperNode [2023-08-03 17:50:03,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:50:03,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:50:03,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:50:03,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:50:03,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,488 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-08-03 17:50:03,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:50:03,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:50:03,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:50:03,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:50:03,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:50:03,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:50:03,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:50:03,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:50:03,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (1/1) ... [2023-08-03 17:50:03,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:50:03,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:03,570 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 17:50:03,578 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 17:50:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:50:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:50:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:50:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:50:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:50:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:50:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:50:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:50:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:50:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:50:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:50:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:50:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:50:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:50:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:50:03,600 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 17:50:03,724 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:50:03,725 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:50:03,940 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:50:03,946 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:50:03,946 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:50:03,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:50:03 BoogieIcfgContainer [2023-08-03 17:50:03,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:50:03,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:50:03,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:50:03,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:50:03,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:50:02" (1/3) ... [2023-08-03 17:50:03,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e92b0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:50:03, skipping insertion in model container [2023-08-03 17:50:03,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:03" (2/3) ... [2023-08-03 17:50:03,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e92b0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:50:03, skipping insertion in model container [2023-08-03 17:50:03,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:50:03" (3/3) ... [2023-08-03 17:50:03,955 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 17:50:03,962 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:50:03,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:50:03,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 17:50:03,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:50:04,013 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:50:04,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 106 transitions, 227 flow [2023-08-03 17:50:04,146 INFO L124 PetriNetUnfolderBase]: 30/414 cut-off events. [2023-08-03 17:50:04,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:50:04,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 414 events. 30/414 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1842 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 243. Up to 16 conditions per place. [2023-08-03 17:50:04,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 106 transitions, 227 flow [2023-08-03 17:50:04,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 94 transitions, 203 flow [2023-08-03 17:50:04,161 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:50:04,171 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 94 transitions, 203 flow [2023-08-03 17:50:04,174 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 94 transitions, 203 flow [2023-08-03 17:50:04,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 94 transitions, 203 flow [2023-08-03 17:50:04,214 INFO L124 PetriNetUnfolderBase]: 22/318 cut-off events. [2023-08-03 17:50:04,214 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:50:04,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 318 events. 22/318 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1299 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 195. Up to 16 conditions per place. [2023-08-03 17:50:04,218 INFO L119 LiptonReduction]: Number of co-enabled transitions 1692 [2023-08-03 17:50:05,941 INFO L134 LiptonReduction]: Checked pairs total: 3229 [2023-08-03 17:50:05,942 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-08-03 17:50:05,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:50:05,954 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;@3d3c095f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:50:05,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 17:50:05,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:50:05,957 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-03 17:50:05,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:50:05,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:05,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:50:05,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:05,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash 357371225, now seen corresponding path program 1 times [2023-08-03 17:50:05,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:05,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71734506] [2023-08-03 17:50:05,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:05,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:06,152 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 17:50:06,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:06,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71734506] [2023-08-03 17:50:06,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71734506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:06,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:50:06,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:50:06,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321273979] [2023-08-03 17:50:06,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:06,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:50:06,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:50:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:50:06,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 183 [2023-08-03 17:50:06,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 17:50:06,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:06,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 183 [2023-08-03 17:50:06,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:06,300 INFO L124 PetriNetUnfolderBase]: 400/775 cut-off events. [2023-08-03 17:50:06,300 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 17:50:06,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 775 events. 400/775 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4066 event pairs, 222 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 1483. Up to 668 conditions per place. [2023-08-03 17:50:06,308 INFO L140 encePairwiseOnDemand]: 179/183 looper letters, 21 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-03 17:50:06,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 119 flow [2023-08-03 17:50:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:50:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:50:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-08-03 17:50:06,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5537340619307832 [2023-08-03 17:50:06,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-08-03 17:50:06,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-08-03 17:50:06,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:06,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-08-03 17:50:06,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 17:50:06,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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 17:50:06,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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 17:50:06,335 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 69 flow. Second operand 3 states and 304 transitions. [2023-08-03 17:50:06,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 119 flow [2023-08-03 17:50:06,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 119 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:50:06,338 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 75 flow [2023-08-03 17:50:06,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-03 17:50:06,342 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-03 17:50:06,342 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 75 flow [2023-08-03 17:50:06,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 17:50:06,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:06,343 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:50:06,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:50:06,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:06,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1810156430, now seen corresponding path program 1 times [2023-08-03 17:50:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707734414] [2023-08-03 17:50:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:06,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:50:06,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:50:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:50:06,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:50:06,404 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:50:06,405 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 17:50:06,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 17:50:06,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 17:50:06,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 17:50:06,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:50:06,407 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:50:06,408 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:50:06,408 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:50:06,422 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:50:06,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 127 transitions, 290 flow [2023-08-03 17:50:06,518 INFO L124 PetriNetUnfolderBase]: 93/1304 cut-off events. [2023-08-03 17:50:06,519 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:50:06,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 1304 events. 93/1304 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8852 event pairs, 0 based on Foata normal form. 0/1145 useless extension candidates. Maximal degree in co-relation 945. Up to 54 conditions per place. [2023-08-03 17:50:06,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 127 transitions, 290 flow [2023-08-03 17:50:06,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 115 transitions, 266 flow [2023-08-03 17:50:06,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:50:06,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 115 transitions, 266 flow [2023-08-03 17:50:06,526 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 115 transitions, 266 flow [2023-08-03 17:50:06,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 115 transitions, 266 flow [2023-08-03 17:50:06,606 INFO L124 PetriNetUnfolderBase]: 66/980 cut-off events. [2023-08-03 17:50:06,607 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:50:06,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 980 events. 66/980 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6116 event pairs, 0 based on Foata normal form. 0/875 useless extension candidates. Maximal degree in co-relation 729. Up to 54 conditions per place. [2023-08-03 17:50:06,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 4140 [2023-08-03 17:50:08,206 INFO L134 LiptonReduction]: Checked pairs total: 8701 [2023-08-03 17:50:08,206 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-03 17:50:08,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:50:08,209 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;@3d3c095f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:50:08,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 17:50:08,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:50:08,211 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-03 17:50:08,211 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:50:08,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:08,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:50:08,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:08,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash 577879105, now seen corresponding path program 1 times [2023-08-03 17:50:08,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:08,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692338698] [2023-08-03 17:50:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:08,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:08,253 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 17:50:08,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:08,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692338698] [2023-08-03 17:50:08,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692338698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:08,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:50:08,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:50:08,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322710083] [2023-08-03 17:50:08,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:08,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:50:08,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:50:08,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:50:08,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2023-08-03 17:50:08,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 17:50:08,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:08,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2023-08-03 17:50:08,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:11,615 INFO L124 PetriNetUnfolderBase]: 33046/48452 cut-off events. [2023-08-03 17:50:11,615 INFO L125 PetriNetUnfolderBase]: For 1788/1788 co-relation queries the response was YES. [2023-08-03 17:50:11,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94425 conditions, 48452 events. 33046/48452 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 1683. Compared 347681 event pairs, 26064 based on Foata normal form. 0/45605 useless extension candidates. Maximal degree in co-relation 26814. Up to 43520 conditions per place. [2023-08-03 17:50:11,890 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 31 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-03 17:50:11,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 192 flow [2023-08-03 17:50:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:50:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:50:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-08-03 17:50:11,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5841269841269842 [2023-08-03 17:50:11,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-08-03 17:50:11,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-08-03 17:50:11,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:11,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-08-03 17:50:11,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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 17:50:11,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:11,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:11,899 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 120 flow. Second operand 3 states and 368 transitions. [2023-08-03 17:50:11,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 192 flow [2023-08-03 17:50:11,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 45 transitions, 186 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:50:11,907 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 124 flow [2023-08-03 17:50:11,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-08-03 17:50:11,908 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-03 17:50:11,909 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 124 flow [2023-08-03 17:50:11,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 17:50:11,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:11,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:11,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:50:11,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:11,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash -912845808, now seen corresponding path program 1 times [2023-08-03 17:50:11,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:11,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463281804] [2023-08-03 17:50:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:11,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:50:11,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:11,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463281804] [2023-08-03 17:50:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463281804] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:50:11,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782516924] [2023-08-03 17:50:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:11,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:11,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:11,984 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 17:50:11,986 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 17:50:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:12,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 17:50:12,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:50:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 17:50:12,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:50:12,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782516924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:12,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:50:12,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 17:50:12,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941789304] [2023-08-03 17:50:12,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:12,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:50:12,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:12,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:50:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:50:12,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2023-08-03 17:50:12,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 17:50:12,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:12,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2023-08-03 17:50:12,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:14,662 INFO L124 PetriNetUnfolderBase]: 31406/45488 cut-off events. [2023-08-03 17:50:14,662 INFO L125 PetriNetUnfolderBase]: For 1287/1287 co-relation queries the response was YES. [2023-08-03 17:50:14,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88840 conditions, 45488 events. 31406/45488 cut-off events. For 1287/1287 co-relation queries the response was YES. Maximal size of possible extension queue 1636. Compared 320163 event pairs, 24928 based on Foata normal form. 0/43244 useless extension candidates. Maximal degree in co-relation 88803. Up to 40987 conditions per place. [2023-08-03 17:50:15,053 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 36 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-03 17:50:15,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 216 flow [2023-08-03 17:50:15,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:50:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:50:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-03 17:50:15,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2023-08-03 17:50:15,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-03 17:50:15,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-03 17:50:15,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:15,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-03 17:50:15,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 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 17:50:15,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:15,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:15,060 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 124 flow. Second operand 3 states and 371 transitions. [2023-08-03 17:50:15,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 216 flow [2023-08-03 17:50:15,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:50:15,062 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 134 flow [2023-08-03 17:50:15,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-08-03 17:50:15,062 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-03 17:50:15,063 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 134 flow [2023-08-03 17:50:15,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 17:50:15,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:15,063 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 17:50:15,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 17:50:15,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:15,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:15,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:15,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1205017741, now seen corresponding path program 1 times [2023-08-03 17:50:15,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:15,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123697120] [2023-08-03 17:50:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:15,315 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 17:50:15,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:15,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123697120] [2023-08-03 17:50:15,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123697120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:15,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:50:15,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 17:50:15,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704314705] [2023-08-03 17:50:15,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:15,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:50:15,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:50:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:50:15,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-03 17:50:15,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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 17:50:15,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:15,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-03 17:50:15,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:17,683 INFO L124 PetriNetUnfolderBase]: 31394/45327 cut-off events. [2023-08-03 17:50:17,684 INFO L125 PetriNetUnfolderBase]: For 1431/1431 co-relation queries the response was YES. [2023-08-03 17:50:17,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88989 conditions, 45327 events. 31394/45327 cut-off events. For 1431/1431 co-relation queries the response was YES. Maximal size of possible extension queue 1644. Compared 315696 event pairs, 20088 based on Foata normal form. 9/43380 useless extension candidates. Maximal degree in co-relation 25474. Up to 41065 conditions per place. [2023-08-03 17:50:17,993 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 35 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-03 17:50:17,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 229 flow [2023-08-03 17:50:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:50:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:50:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 589 transitions. [2023-08-03 17:50:17,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.560952380952381 [2023-08-03 17:50:17,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 589 transitions. [2023-08-03 17:50:17,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 589 transitions. [2023-08-03 17:50:17,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:17,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 589 transitions. [2023-08-03 17:50:17,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 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 17:50:18,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 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 17:50:18,001 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 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 17:50:18,001 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 134 flow. Second operand 5 states and 589 transitions. [2023-08-03 17:50:18,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 229 flow [2023-08-03 17:50:18,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 50 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 17:50:18,004 INFO L231 Difference]: Finished difference. Result has 62 places, 43 transitions, 150 flow [2023-08-03 17:50:18,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2023-08-03 17:50:18,006 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-08-03 17:50:18,006 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 150 flow [2023-08-03 17:50:18,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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 17:50:18,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:18,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:18,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 17:50:18,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:18,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:18,007 INFO L85 PathProgramCache]: Analyzing trace with hash 104553318, now seen corresponding path program 1 times [2023-08-03 17:50:18,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:18,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392041500] [2023-08-03 17:50:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:18,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 17:50:18,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392041500] [2023-08-03 17:50:18,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392041500] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:50:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577324540] [2023-08-03 17:50:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:18,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:18,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:18,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:50:18,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 17:50:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:18,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 17:50:18,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:50:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 17:50:18,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:50:18,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577324540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:18,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:50:18,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 17:50:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99809565] [2023-08-03 17:50:18,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:18,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:50:18,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:18,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:50:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:50:18,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2023-08-03 17:50:18,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 17:50:18,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:18,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2023-08-03 17:50:18,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:20,629 INFO L124 PetriNetUnfolderBase]: 30722/43796 cut-off events. [2023-08-03 17:50:20,629 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2023-08-03 17:50:20,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86504 conditions, 43796 events. 30722/43796 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 300066 event pairs, 23570 based on Foata normal form. 0/42056 useless extension candidates. Maximal degree in co-relation 24644. Up to 37736 conditions per place. [2023-08-03 17:50:20,918 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 42 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-03 17:50:20,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 262 flow [2023-08-03 17:50:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:50:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:50:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-08-03 17:50:20,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2023-08-03 17:50:20,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-08-03 17:50:20,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-08-03 17:50:20,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:20,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-08-03 17:50:20,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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 17:50:20,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:20,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:20,922 INFO L175 Difference]: Start difference. First operand has 62 places, 43 transitions, 150 flow. Second operand 3 states and 375 transitions. [2023-08-03 17:50:20,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 262 flow [2023-08-03 17:50:21,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 255 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 17:50:21,306 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 155 flow [2023-08-03 17:50:21,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2023-08-03 17:50:21,307 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-08-03 17:50:21,307 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 155 flow [2023-08-03 17:50:21,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 17:50:21,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:21,308 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:21,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 17:50:21,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-03 17:50:21,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:21,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:21,509 INFO L85 PathProgramCache]: Analyzing trace with hash 588734646, now seen corresponding path program 1 times [2023-08-03 17:50:21,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:21,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751501292] [2023-08-03 17:50:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:21,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 17:50:21,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:21,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751501292] [2023-08-03 17:50:21,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751501292] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:50:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291469737] [2023-08-03 17:50:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:21,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:21,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:21,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:50:21,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 17:50:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:21,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:50:21,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:50:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 17:50:21,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:50:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 17:50:21,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291469737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:50:21,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:50:21,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-03 17:50:21,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523523278] [2023-08-03 17:50:21,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:50:21,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 17:50:21,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:21,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 17:50:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 17:50:21,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-03 17:50:21,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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 17:50:21,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:21,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-03 17:50:21,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:24,049 INFO L124 PetriNetUnfolderBase]: 24220/34220 cut-off events. [2023-08-03 17:50:24,049 INFO L125 PetriNetUnfolderBase]: For 3657/3657 co-relation queries the response was YES. [2023-08-03 17:50:24,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70465 conditions, 34220 events. 24220/34220 cut-off events. For 3657/3657 co-relation queries the response was YES. Maximal size of possible extension queue 1295. Compared 221074 event pairs, 14814 based on Foata normal form. 3/34187 useless extension candidates. Maximal degree in co-relation 25033. Up to 31258 conditions per place. [2023-08-03 17:50:24,207 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 36 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-08-03 17:50:24,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 50 transitions, 241 flow [2023-08-03 17:50:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:50:24,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:50:24,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 478 transitions. [2023-08-03 17:50:24,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.569047619047619 [2023-08-03 17:50:24,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 478 transitions. [2023-08-03 17:50:24,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 478 transitions. [2023-08-03 17:50:24,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:24,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 478 transitions. [2023-08-03 17:50:24,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 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 17:50:24,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 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 17:50:24,212 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 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 17:50:24,212 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 155 flow. Second operand 4 states and 478 transitions. [2023-08-03 17:50:24,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 50 transitions, 241 flow [2023-08-03 17:50:24,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 50 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:50:24,216 INFO L231 Difference]: Finished difference. Result has 65 places, 43 transitions, 151 flow [2023-08-03 17:50:24,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=65, PETRI_TRANSITIONS=43} [2023-08-03 17:50:24,217 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2023-08-03 17:50:24,217 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 151 flow [2023-08-03 17:50:24,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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 17:50:24,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:24,217 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:24,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 17:50:24,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:24,421 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:24,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:24,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2089298726, now seen corresponding path program 1 times [2023-08-03 17:50:24,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:24,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765116751] [2023-08-03 17:50:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:24,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:50:24,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:24,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765116751] [2023-08-03 17:50:24,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765116751] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:50:24,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912184389] [2023-08-03 17:50:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:24,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:24,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:24,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:50:24,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 17:50:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:24,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:50:24,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:50:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:50:24,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:50:24,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912184389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:24,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:50:24,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 17:50:24,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420859950] [2023-08-03 17:50:24,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:24,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:50:24,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:24,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:50:24,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:50:24,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-03 17:50:24,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 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 17:50:24,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:24,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-03 17:50:24,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:26,686 INFO L124 PetriNetUnfolderBase]: 24004/33775 cut-off events. [2023-08-03 17:50:26,686 INFO L125 PetriNetUnfolderBase]: For 3166/3166 co-relation queries the response was YES. [2023-08-03 17:50:26,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69385 conditions, 33775 events. 24004/33775 cut-off events. For 3166/3166 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 216768 event pairs, 6718 based on Foata normal form. 81/33847 useless extension candidates. Maximal degree in co-relation 24653. Up to 30429 conditions per place. [2023-08-03 17:50:26,862 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 48 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-08-03 17:50:26,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 295 flow [2023-08-03 17:50:26,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:50:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:50:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2023-08-03 17:50:26,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5723809523809524 [2023-08-03 17:50:26,864 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2023-08-03 17:50:26,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2023-08-03 17:50:26,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:26,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2023-08-03 17:50:26,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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 17:50:26,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 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 17:50:26,867 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 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 17:50:26,867 INFO L175 Difference]: Start difference. First operand has 65 places, 43 transitions, 151 flow. Second operand 5 states and 601 transitions. [2023-08-03 17:50:26,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 295 flow [2023-08-03 17:50:26,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 17:50:26,871 INFO L231 Difference]: Finished difference. Result has 66 places, 43 transitions, 163 flow [2023-08-03 17:50:26,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2023-08-03 17:50:26,872 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2023-08-03 17:50:26,872 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 43 transitions, 163 flow [2023-08-03 17:50:26,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 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 17:50:26,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:26,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:26,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 17:50:27,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:27,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:27,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 808291466, now seen corresponding path program 1 times [2023-08-03 17:50:27,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:27,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775629963] [2023-08-03 17:50:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 17:50:27,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:27,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775629963] [2023-08-03 17:50:27,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775629963] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:50:27,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798300476] [2023-08-03 17:50:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:27,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:27,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:27,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:50:27,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 17:50:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:27,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:50:27,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:50:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 17:50:27,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:50:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 17:50:27,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798300476] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:50:27,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:50:27,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 17:50:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826719247] [2023-08-03 17:50:27,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:50:27,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:50:27,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:27,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:50:27,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:50:27,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-03 17:50:27,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 43 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 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 17:50:27,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:27,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-03 17:50:27,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:28,919 INFO L124 PetriNetUnfolderBase]: 18982/26404 cut-off events. [2023-08-03 17:50:28,920 INFO L125 PetriNetUnfolderBase]: For 2971/2971 co-relation queries the response was YES. [2023-08-03 17:50:28,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54541 conditions, 26404 events. 18982/26404 cut-off events. For 2971/2971 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 162961 event pairs, 11848 based on Foata normal form. 27/26422 useless extension candidates. Maximal degree in co-relation 19334. Up to 23785 conditions per place. [2023-08-03 17:50:29,034 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 44 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-03 17:50:29,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 279 flow [2023-08-03 17:50:29,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:50:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:50:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 486 transitions. [2023-08-03 17:50:29,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2023-08-03 17:50:29,036 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 486 transitions. [2023-08-03 17:50:29,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 486 transitions. [2023-08-03 17:50:29,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:29,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 486 transitions. [2023-08-03 17:50:29,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 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 17:50:29,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 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 17:50:29,038 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 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 17:50:29,038 INFO L175 Difference]: Start difference. First operand has 66 places, 43 transitions, 163 flow. Second operand 4 states and 486 transitions. [2023-08-03 17:50:29,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 279 flow [2023-08-03 17:50:29,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 274 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 17:50:29,043 INFO L231 Difference]: Finished difference. Result has 67 places, 42 transitions, 154 flow [2023-08-03 17:50:29,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=67, PETRI_TRANSITIONS=42} [2023-08-03 17:50:29,045 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2023-08-03 17:50:29,045 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 42 transitions, 154 flow [2023-08-03 17:50:29,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 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 17:50:29,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:29,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:29,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 17:50:29,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:29,246 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:29,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:29,246 INFO L85 PathProgramCache]: Analyzing trace with hash -254458113, now seen corresponding path program 1 times [2023-08-03 17:50:29,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:29,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070549968] [2023-08-03 17:50:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:29,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:50:29,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:29,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070549968] [2023-08-03 17:50:29,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070549968] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:50:29,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229534497] [2023-08-03 17:50:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:29,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:29,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:29,296 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:50:29,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 17:50:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:29,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:50:29,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:50:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:50:29,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:50:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:50:29,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229534497] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:50:29,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:50:29,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 17:50:29,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510192196] [2023-08-03 17:50:29,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:50:29,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:50:29,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:50:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:50:29,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-03 17:50:29,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 42 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 17:50:29,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:29,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-03 17:50:29,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:30,861 INFO L124 PetriNetUnfolderBase]: 17362/23452 cut-off events. [2023-08-03 17:50:30,862 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2023-08-03 17:50:30,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49267 conditions, 23452 events. 17362/23452 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 133016 event pairs, 6886 based on Foata normal form. 243/23686 useless extension candidates. Maximal degree in co-relation 17468. Up to 11794 conditions per place. [2023-08-03 17:50:30,971 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 52 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-08-03 17:50:30,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 314 flow [2023-08-03 17:50:30,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:50:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:50:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-08-03 17:50:30,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2023-08-03 17:50:30,974 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-08-03 17:50:30,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-08-03 17:50:30,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:30,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-08-03 17:50:30,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 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 17:50:30,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 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 17:50:30,977 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 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 17:50:30,977 INFO L175 Difference]: Start difference. First operand has 67 places, 42 transitions, 154 flow. Second operand 4 states and 495 transitions. [2023-08-03 17:50:30,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 314 flow [2023-08-03 17:50:30,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 308 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 17:50:30,981 INFO L231 Difference]: Finished difference. Result has 69 places, 43 transitions, 168 flow [2023-08-03 17:50:30,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=69, PETRI_TRANSITIONS=43} [2023-08-03 17:50:30,982 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2023-08-03 17:50:30,982 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 43 transitions, 168 flow [2023-08-03 17:50:30,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 17:50:30,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:30,982 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:31,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 17:50:31,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:31,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:31,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:31,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1235982228, now seen corresponding path program 1 times [2023-08-03 17:50:31,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:31,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892740112] [2023-08-03 17:50:31,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:31,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 17:50:31,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:31,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892740112] [2023-08-03 17:50:31,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892740112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:31,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:50:31,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:50:31,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244961912] [2023-08-03 17:50:31,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:31,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:50:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:50:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:50:31,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 210 [2023-08-03 17:50:31,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 43 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 17:50:31,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:31,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 210 [2023-08-03 17:50:31,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:39,348 INFO L124 PetriNetUnfolderBase]: 99013/128384 cut-off events. [2023-08-03 17:50:39,348 INFO L125 PetriNetUnfolderBase]: For 61147/61147 co-relation queries the response was YES. [2023-08-03 17:50:39,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293645 conditions, 128384 events. 99013/128384 cut-off events. For 61147/61147 co-relation queries the response was YES. Maximal size of possible extension queue 4930. Compared 792601 event pairs, 39963 based on Foata normal form. 1981/130290 useless extension candidates. Maximal degree in co-relation 293568. Up to 74098 conditions per place. [2023-08-03 17:50:40,134 INFO L140 encePairwiseOnDemand]: 198/210 looper letters, 60 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2023-08-03 17:50:40,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 453 flow [2023-08-03 17:50:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:50:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:50:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-03 17:50:40,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5825396825396826 [2023-08-03 17:50:40,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-03 17:50:40,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-03 17:50:40,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:40,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-03 17:50:40,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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 17:50:40,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:40,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:40,138 INFO L175 Difference]: Start difference. First operand has 69 places, 43 transitions, 168 flow. Second operand 3 states and 367 transitions. [2023-08-03 17:50:40,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 453 flow [2023-08-03 17:50:40,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 445 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-03 17:50:40,233 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 250 flow [2023-08-03 17:50:40,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-08-03 17:50:40,234 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2023-08-03 17:50:40,234 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 250 flow [2023-08-03 17:50:40,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 17:50:40,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:40,234 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:40,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 17:50:40,234 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:40,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:40,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1235981682, now seen corresponding path program 1 times [2023-08-03 17:50:40,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:40,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363880868] [2023-08-03 17:50:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:40,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:50:40,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363880868] [2023-08-03 17:50:40,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363880868] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:50:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702491506] [2023-08-03 17:50:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:40,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:40,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:40,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:50:40,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 17:50:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:40,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:50:40,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:50:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:50:40,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:50:40,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702491506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:40,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:50:40,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 17:50:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463550787] [2023-08-03 17:50:40,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:40,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:50:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:50:40,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:50:40,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-03 17:50:40,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 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 17:50:40,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:40,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-03 17:50:40,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:46,407 INFO L124 PetriNetUnfolderBase]: 72296/93720 cut-off events. [2023-08-03 17:50:46,407 INFO L125 PetriNetUnfolderBase]: For 73976/75704 co-relation queries the response was YES. [2023-08-03 17:50:46,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268953 conditions, 93720 events. 72296/93720 cut-off events. For 73976/75704 co-relation queries the response was YES. Maximal size of possible extension queue 4031. Compared 553661 event pairs, 2714 based on Foata normal form. 3737/94249 useless extension candidates. Maximal degree in co-relation 149104. Up to 55670 conditions per place. [2023-08-03 17:50:46,971 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 81 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2023-08-03 17:50:46,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 97 transitions, 592 flow [2023-08-03 17:50:46,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:50:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:50:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 612 transitions. [2023-08-03 17:50:46,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5828571428571429 [2023-08-03 17:50:46,973 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 612 transitions. [2023-08-03 17:50:46,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 612 transitions. [2023-08-03 17:50:46,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:46,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 612 transitions. [2023-08-03 17:50:46,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 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 17:50:46,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 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 17:50:46,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 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 17:50:46,976 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 250 flow. Second operand 5 states and 612 transitions. [2023-08-03 17:50:46,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 97 transitions, 592 flow [2023-08-03 17:50:47,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 97 transitions, 537 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 17:50:47,182 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 221 flow [2023-08-03 17:50:47,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2023-08-03 17:50:47,182 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2023-08-03 17:50:47,182 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 221 flow [2023-08-03 17:50:47,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 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 17:50:47,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:47,183 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:47,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 17:50:47,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:47,385 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:47,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:47,385 INFO L85 PathProgramCache]: Analyzing trace with hash 128759145, now seen corresponding path program 1 times [2023-08-03 17:50:47,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:47,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067303282] [2023-08-03 17:50:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:47,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 17:50:47,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:47,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067303282] [2023-08-03 17:50:47,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067303282] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:50:47,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574798750] [2023-08-03 17:50:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:47,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:47,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:47,479 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:50:47,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 17:50:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:47,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 17:50:47,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:50:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 17:50:47,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:50:47,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574798750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:47,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:50:47,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-03 17:50:47,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6744611] [2023-08-03 17:50:47,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:47,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:50:47,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:47,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:50:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:50:47,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 210 [2023-08-03 17:50:47,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 17:50:47,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:47,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 210 [2023-08-03 17:50:47,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:52,555 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([544] L759-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= v_~__unbuffered_cnt~0_61 (+ v_~__unbuffered_cnt~0_62 1)) (= |v_P2Thread2of2ForFork2_#res.base_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_62} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_61} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][82], [Black: 219#(<= |ULTIMATE.start_main_~asdf~2#1| 0), P0Thread2of2ForFork0InUse, Black: 323#(<= 1 |ULTIMATE.start_main_~asdf~1#1|), P1Thread1of2ForFork1InUse, 26#L744true, P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 761#true, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 81#P2EXITtrue, 94#L726true, 119#P1EXITtrue, 124#L788true, 324#(<= 2 |ULTIMATE.start_main_~asdf~1#1|), Black: 177#(<= 1 |ULTIMATE.start_main_~asdf~0#1|), 674#(<= 2 |ULTIMATE.start_main_~asdf~2#1|), Black: 515#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 666#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), P0Thread1of2ForFork0InUse, 178#(<= 2 |ULTIMATE.start_main_~asdf~0#1|), 55#L759true]) [2023-08-03 17:50:52,555 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-03 17:50:52,556 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-03 17:50:52,556 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-03 17:50:52,556 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-03 17:50:52,556 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([572] L788-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_~expression#1_35| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_25| (mod v_~main$tmp_guard1~0_40 256)) (= v_~main$tmp_guard1~0_40 (ite (= (ite (not (and (= 2 v_~__unbuffered_p0_EAX~0_32) (= v_~__unbuffered_p1_EAX~0_32 1) (= v_~__unbuffered_p2_EAX~0_36 1) (= v_~y~0_43 2))) 1 0) 0) 0 1)) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_25| |v_ULTIMATE.start___VERIFIER_assert_~expression#1_35|)) InVars {~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_32, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_32, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_36, ~y~0=v_~y~0_43} OutVars{ULTIMATE.start___VERIFIER_assert_~expression#1=|v_ULTIMATE.start___VERIFIER_assert_~expression#1_35|, ~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_32, ULTIMATE.start___VERIFIER_assert_#in~expression#1=|v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_25|, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_32, ~main$tmp_guard1~0=v_~main$tmp_guard1~0_40, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_36, ~y~0=v_~y~0_43} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~expression#1, ULTIMATE.start___VERIFIER_assert_#in~expression#1, ~main$tmp_guard1~0][84], [Black: 219#(<= |ULTIMATE.start_main_~asdf~2#1| 0), P0Thread2of2ForFork0InUse, Black: 323#(<= 1 |ULTIMATE.start_main_~asdf~1#1|), P1Thread1of2ForFork1InUse, 26#L744true, P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 761#true, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 94#L726true, 119#P1EXITtrue, 69#L759true, 112#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, 324#(<= 2 |ULTIMATE.start_main_~asdf~1#1|), Black: 177#(<= 1 |ULTIMATE.start_main_~asdf~0#1|), 674#(<= 2 |ULTIMATE.start_main_~asdf~2#1|), Black: 515#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 666#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), P0Thread1of2ForFork0InUse, 178#(<= 2 |ULTIMATE.start_main_~asdf~0#1|), 55#L759true]) [2023-08-03 17:50:52,556 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-03 17:50:52,556 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-03 17:50:52,556 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-03 17:50:52,556 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-03 17:50:52,639 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([544] L759-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= v_~__unbuffered_cnt~0_61 (+ v_~__unbuffered_cnt~0_62 1)) (= |v_P2Thread2of2ForFork2_#res.base_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_62} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_61} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][82], [Black: 219#(<= |ULTIMATE.start_main_~asdf~2#1| 0), P0Thread2of2ForFork0InUse, Black: 323#(<= 1 |ULTIMATE.start_main_~asdf~1#1|), P1Thread1of2ForFork1InUse, 26#L744true, P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, 761#true, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 81#P2EXITtrue, 119#P1EXITtrue, 124#L788true, 324#(<= 2 |ULTIMATE.start_main_~asdf~1#1|), Black: 177#(<= 1 |ULTIMATE.start_main_~asdf~0#1|), 674#(<= 2 |ULTIMATE.start_main_~asdf~2#1|), Black: 515#(<= |ULTIMATE.start_main_~asdf~2#1| 1), 11#P0EXITtrue, Black: 666#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), P0Thread1of2ForFork0InUse, 178#(<= 2 |ULTIMATE.start_main_~asdf~0#1|), 55#L759true]) [2023-08-03 17:50:52,639 INFO L294 olderBase$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-03 17:50:52,639 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-03 17:50:52,639 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-03 17:50:52,640 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-03 17:50:52,640 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([572] L788-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_~expression#1_35| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_25| (mod v_~main$tmp_guard1~0_40 256)) (= v_~main$tmp_guard1~0_40 (ite (= (ite (not (and (= 2 v_~__unbuffered_p0_EAX~0_32) (= v_~__unbuffered_p1_EAX~0_32 1) (= v_~__unbuffered_p2_EAX~0_36 1) (= v_~y~0_43 2))) 1 0) 0) 0 1)) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_25| |v_ULTIMATE.start___VERIFIER_assert_~expression#1_35|)) InVars {~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_32, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_32, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_36, ~y~0=v_~y~0_43} OutVars{ULTIMATE.start___VERIFIER_assert_~expression#1=|v_ULTIMATE.start___VERIFIER_assert_~expression#1_35|, ~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_32, ULTIMATE.start___VERIFIER_assert_#in~expression#1=|v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_25|, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_32, ~main$tmp_guard1~0=v_~main$tmp_guard1~0_40, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_36, ~y~0=v_~y~0_43} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~expression#1, ULTIMATE.start___VERIFIER_assert_#in~expression#1, ~main$tmp_guard1~0][84], [Black: 219#(<= |ULTIMATE.start_main_~asdf~2#1| 0), P0Thread2of2ForFork0InUse, Black: 323#(<= 1 |ULTIMATE.start_main_~asdf~1#1|), P1Thread1of2ForFork1InUse, 26#L744true, P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, 761#true, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 119#P1EXITtrue, 69#L759true, 112#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, 324#(<= 2 |ULTIMATE.start_main_~asdf~1#1|), Black: 177#(<= 1 |ULTIMATE.start_main_~asdf~0#1|), 674#(<= 2 |ULTIMATE.start_main_~asdf~2#1|), Black: 515#(<= |ULTIMATE.start_main_~asdf~2#1| 1), 11#P0EXITtrue, Black: 666#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), P0Thread1of2ForFork0InUse, 178#(<= 2 |ULTIMATE.start_main_~asdf~0#1|), 55#L759true]) [2023-08-03 17:50:52,640 INFO L294 olderBase$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-03 17:50:52,640 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-03 17:50:52,640 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-03 17:50:52,640 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-03 17:50:52,653 INFO L124 PetriNetUnfolderBase]: 64279/83095 cut-off events. [2023-08-03 17:50:52,653 INFO L125 PetriNetUnfolderBase]: For 69184/69366 co-relation queries the response was YES. [2023-08-03 17:50:52,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223521 conditions, 83095 events. 64279/83095 cut-off events. For 69184/69366 co-relation queries the response was YES. Maximal size of possible extension queue 3652. Compared 490525 event pairs, 12624 based on Foata normal form. 329/77993 useless extension candidates. Maximal degree in co-relation 121957. Up to 71821 conditions per place. [2023-08-03 17:50:53,141 INFO L140 encePairwiseOnDemand]: 202/210 looper letters, 65 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2023-08-03 17:50:53,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 85 transitions, 523 flow [2023-08-03 17:50:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:50:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:50:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2023-08-03 17:50:53,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015873015873016 [2023-08-03 17:50:53,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2023-08-03 17:50:53,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2023-08-03 17:50:53,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:53,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2023-08-03 17:50:53,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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 17:50:53,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:53,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:53,145 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 221 flow. Second operand 3 states and 379 transitions. [2023-08-03 17:50:53,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 85 transitions, 523 flow [2023-08-03 17:50:53,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 85 transitions, 513 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 17:50:53,162 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 263 flow [2023-08-03 17:50:53,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2023-08-03 17:50:53,163 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2023-08-03 17:50:53,163 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 263 flow [2023-08-03 17:50:53,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 17:50:53,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:53,163 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:53,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 17:50:53,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 17:50:53,367 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:53,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash -820098716, now seen corresponding path program 1 times [2023-08-03 17:50:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:53,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561112044] [2023-08-03 17:50:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 17:50:53,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:53,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561112044] [2023-08-03 17:50:53,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561112044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:53,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:50:53,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:50:53,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901532451] [2023-08-03 17:50:53,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:53,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:50:53,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:53,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:50:53,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:50:53,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-03 17:50:53,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 17:50:53,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:53,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-03 17:50:53,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:58,741 INFO L124 PetriNetUnfolderBase]: 73172/93660 cut-off events. [2023-08-03 17:50:58,741 INFO L125 PetriNetUnfolderBase]: For 73000/73000 co-relation queries the response was YES. [2023-08-03 17:50:58,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300222 conditions, 93660 events. 73172/93660 cut-off events. For 73000/73000 co-relation queries the response was YES. Maximal size of possible extension queue 3280. Compared 537289 event pairs, 13075 based on Foata normal form. 80/93711 useless extension candidates. Maximal degree in co-relation 109650. Up to 88792 conditions per place. [2023-08-03 17:50:59,253 INFO L140 encePairwiseOnDemand]: 204/210 looper letters, 78 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2023-08-03 17:50:59,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 601 flow [2023-08-03 17:50:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:50:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:50:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-08-03 17:50:59,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2023-08-03 17:50:59,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-08-03 17:50:59,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-08-03 17:50:59,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:59,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-08-03 17:50:59,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 17:50:59,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:59,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 17:50:59,257 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 263 flow. Second operand 3 states and 385 transitions. [2023-08-03 17:50:59,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 601 flow [2023-08-03 17:50:59,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:50:59,277 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 333 flow [2023-08-03 17:50:59,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-03 17:50:59,277 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-03 17:50:59,277 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 333 flow [2023-08-03 17:50:59,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 17:50:59,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:59,278 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:50:59,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 17:50:59,278 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:50:59,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:59,278 INFO L85 PathProgramCache]: Analyzing trace with hash 970534342, now seen corresponding path program 1 times [2023-08-03 17:50:59,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:59,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425831587] [2023-08-03 17:50:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:59,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 17:50:59,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:59,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425831587] [2023-08-03 17:50:59,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425831587] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:50:59,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817684090] [2023-08-03 17:50:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:59,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:50:59,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:59,378 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:50:59,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 17:50:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:59,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 17:50:59,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:50:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 17:50:59,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:50:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 17:50:59,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817684090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:50:59,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:50:59,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 6 [2023-08-03 17:50:59,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501739449] [2023-08-03 17:50:59,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:50:59,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 17:50:59,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:59,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 17:50:59,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-03 17:50:59,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 210 [2023-08-03 17:50:59,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 102.42857142857143) internal successors, (717), 7 states have internal predecessors, (717), 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 17:50:59,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:59,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 210 [2023-08-03 17:50:59,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:51:03,578 INFO L124 PetriNetUnfolderBase]: 50610/65513 cut-off events. [2023-08-03 17:51:03,578 INFO L125 PetriNetUnfolderBase]: For 79066/79066 co-relation queries the response was YES. [2023-08-03 17:51:03,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221081 conditions, 65513 events. 50610/65513 cut-off events. For 79066/79066 co-relation queries the response was YES. Maximal size of possible extension queue 2365. Compared 368317 event pairs, 1283 based on Foata normal form. 2739/68217 useless extension candidates. Maximal degree in co-relation 220993. Up to 23207 conditions per place. [2023-08-03 17:51:03,973 INFO L140 encePairwiseOnDemand]: 191/210 looper letters, 277 selfloop transitions, 117 changer transitions 0/399 dead transitions. [2023-08-03 17:51:03,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 399 transitions, 2860 flow [2023-08-03 17:51:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-03 17:51:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-03 17:51:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1526 transitions. [2023-08-03 17:51:03,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558974358974359 [2023-08-03 17:51:03,976 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1526 transitions. [2023-08-03 17:51:03,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1526 transitions. [2023-08-03 17:51:03,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:51:03,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1526 transitions. [2023-08-03 17:51:03,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.38461538461539) internal successors, (1526), 13 states have internal predecessors, (1526), 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 17:51:03,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 210.0) internal successors, (2940), 14 states have internal predecessors, (2940), 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 17:51:03,982 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 210.0) internal successors, (2940), 14 states have internal predecessors, (2940), 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 17:51:03,982 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 333 flow. Second operand 13 states and 1526 transitions. [2023-08-03 17:51:03,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 399 transitions, 2860 flow [2023-08-03 17:51:04,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 399 transitions, 2827 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:51:04,020 INFO L231 Difference]: Finished difference. Result has 96 places, 183 transitions, 1454 flow [2023-08-03 17:51:04,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1454, PETRI_PLACES=96, PETRI_TRANSITIONS=183} [2023-08-03 17:51:04,020 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2023-08-03 17:51:04,020 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 183 transitions, 1454 flow [2023-08-03 17:51:04,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.42857142857143) internal successors, (717), 7 states have internal predecessors, (717), 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 17:51:04,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:51:04,021 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:51:04,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 17:51:04,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 17:51:04,225 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:51:04,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:51:04,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1090382946, now seen corresponding path program 1 times [2023-08-03 17:51:04,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:51:04,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870159736] [2023-08-03 17:51:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:51:04,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:51:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:51:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 17:51:04,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:51:04,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870159736] [2023-08-03 17:51:04,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870159736] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:51:04,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778850167] [2023-08-03 17:51:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:51:04,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:51:04,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:51:04,352 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:51:04,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 17:51:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:51:04,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 17:51:04,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:51:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 17:51:04,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:51:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 17:51:04,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778850167] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:51:04,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:51:04,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 11 [2023-08-03 17:51:04,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619203121] [2023-08-03 17:51:04,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:51:04,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 17:51:04,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:51:04,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 17:51:04,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-08-03 17:51:04,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 210 [2023-08-03 17:51:04,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 183 transitions, 1454 flow. Second operand has 13 states, 13 states have (on average 99.61538461538461) internal successors, (1295), 13 states have internal predecessors, (1295), 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 17:51:04,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:51:04,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 210 [2023-08-03 17:51:04,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:51:12,809 INFO L124 PetriNetUnfolderBase]: 71122/93421 cut-off events. [2023-08-03 17:51:12,809 INFO L125 PetriNetUnfolderBase]: For 301402/301402 co-relation queries the response was YES. [2023-08-03 17:51:13,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450501 conditions, 93421 events. 71122/93421 cut-off events. For 301402/301402 co-relation queries the response was YES. Maximal size of possible extension queue 3664. Compared 567096 event pairs, 736 based on Foata normal form. 38/93450 useless extension candidates. Maximal degree in co-relation 353499. Up to 32465 conditions per place. [2023-08-03 17:51:13,751 INFO L140 encePairwiseOnDemand]: 191/210 looper letters, 471 selfloop transitions, 576 changer transitions 0/1052 dead transitions. [2023-08-03 17:51:13,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 1052 transitions, 10414 flow [2023-08-03 17:51:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-03 17:51:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-03 17:51:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3061 transitions. [2023-08-03 17:51:13,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398589065255732 [2023-08-03 17:51:13,757 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3061 transitions. [2023-08-03 17:51:13,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3061 transitions. [2023-08-03 17:51:13,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:51:13,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3061 transitions. [2023-08-03 17:51:13,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 113.37037037037037) internal successors, (3061), 27 states have internal predecessors, (3061), 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 17:51:13,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 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 17:51:13,768 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 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 17:51:13,768 INFO L175 Difference]: Start difference. First operand has 96 places, 183 transitions, 1454 flow. Second operand 27 states and 3061 transitions. [2023-08-03 17:51:13,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 1052 transitions, 10414 flow [2023-08-03 17:51:29,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 1052 transitions, 10059 flow, removed 152 selfloop flow, removed 1 redundant places. [2023-08-03 17:51:29,215 INFO L231 Difference]: Finished difference. Result has 128 places, 764 transitions, 7821 flow [2023-08-03 17:51:29,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7821, PETRI_PLACES=128, PETRI_TRANSITIONS=764} [2023-08-03 17:51:29,215 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2023-08-03 17:51:29,215 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 764 transitions, 7821 flow [2023-08-03 17:51:29,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 99.61538461538461) internal successors, (1295), 13 states have internal predecessors, (1295), 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 17:51:29,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:51:29,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:51:29,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-03 17:51:29,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 17:51:29,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:51:29,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:51:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1312717746, now seen corresponding path program 1 times [2023-08-03 17:51:29,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:51:29,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390059291] [2023-08-03 17:51:29,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:51:29,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:51:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:51:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 17:51:29,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:51:29,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390059291] [2023-08-03 17:51:29,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390059291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:51:29,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075438818] [2023-08-03 17:51:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:51:29,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:51:29,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:51:29,517 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:51:29,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 17:51:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:51:29,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 17:51:29,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:51:29,714 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 17:51:29,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:51:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 17:51:29,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075438818] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:51:29,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:51:29,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 13 [2023-08-03 17:51:29,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662435986] [2023-08-03 17:51:29,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:51:29,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-03 17:51:29,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:51:29,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-03 17:51:29,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-08-03 17:51:29,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 210 [2023-08-03 17:51:29,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 764 transitions, 7821 flow. Second operand has 15 states, 15 states have (on average 98.8) internal successors, (1482), 15 states have internal predecessors, (1482), 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 17:51:29,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:51:29,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 210 [2023-08-03 17:51:29,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:51:52,054 INFO L124 PetriNetUnfolderBase]: 142155/188380 cut-off events. [2023-08-03 17:51:52,054 INFO L125 PetriNetUnfolderBase]: For 738430/738430 co-relation queries the response was YES. [2023-08-03 17:51:53,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009843 conditions, 188380 events. 142155/188380 cut-off events. For 738430/738430 co-relation queries the response was YES. Maximal size of possible extension queue 8347. Compared 1273847 event pairs, 1508 based on Foata normal form. 960/189331 useless extension candidates. Maximal degree in co-relation 967903. Up to 63304 conditions per place. [2023-08-03 17:51:54,013 INFO L140 encePairwiseOnDemand]: 191/210 looper letters, 1484 selfloop transitions, 2130 changer transitions 721/4340 dead transitions. [2023-08-03 17:51:54,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 4340 transitions, 50553 flow [2023-08-03 17:51:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-08-03 17:51:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-08-03 17:51:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 5965 transitions. [2023-08-03 17:51:54,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359389038634321 [2023-08-03 17:51:54,022 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 5965 transitions. [2023-08-03 17:51:54,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 5965 transitions. [2023-08-03 17:51:54,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:51:54,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 5965 transitions. [2023-08-03 17:51:54,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 112.54716981132076) internal successors, (5965), 53 states have internal predecessors, (5965), 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 17:51:54,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 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 17:51:54,040 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 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 17:51:54,040 INFO L175 Difference]: Start difference. First operand has 128 places, 764 transitions, 7821 flow. Second operand 53 states and 5965 transitions. [2023-08-03 17:51:54,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 4340 transitions, 50553 flow [2023-08-03 17:58:55,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 4340 transitions, 48305 flow, removed 1124 selfloop flow, removed 0 redundant places. [2023-08-03 17:58:55,289 INFO L231 Difference]: Finished difference. Result has 211 places, 2824 transitions, 35445 flow [2023-08-03 17:58:55,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7125, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=443, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=35445, PETRI_PLACES=211, PETRI_TRANSITIONS=2824} [2023-08-03 17:58:55,290 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 157 predicate places. [2023-08-03 17:58:55,290 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 2824 transitions, 35445 flow [2023-08-03 17:58:55,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 98.8) internal successors, (1482), 15 states have internal predecessors, (1482), 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 17:58:55,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:58:55,291 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:58:55,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 17:58:55,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 17:58:55,495 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:58:55,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:58:55,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1706484686, now seen corresponding path program 1 times [2023-08-03 17:58:55,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:58:55,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308743389] [2023-08-03 17:58:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:58:55,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:58:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:58:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 17:58:55,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:58:55,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308743389] [2023-08-03 17:58:55,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308743389] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:58:55,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312345993] [2023-08-03 17:58:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:58:55,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:58:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:58:55,576 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:58:55,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 17:58:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:58:55,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-03 17:58:55,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:58:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 17:58:55,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:58:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 17:58:55,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312345993] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:58:55,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:58:55,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 14 [2023-08-03 17:58:55,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880445359] [2023-08-03 17:58:55,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:58:55,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 17:58:55,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:58:55,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 17:58:55,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-08-03 17:58:55,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 210 [2023-08-03 17:58:55,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 2824 transitions, 35445 flow. Second operand has 16 states, 16 states have (on average 98.875) internal successors, (1582), 16 states have internal predecessors, (1582), 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 17:58:55,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:58:55,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 210 [2023-08-03 17:58:55,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand