/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_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:34:05,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:34:05,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:34:05,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:34:05,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:34:05,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:34:05,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:34:05,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:34:05,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:34:05,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:34:05,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:34:05,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:34:05,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:34:05,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:34:05,594 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:34:05,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:34:05,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:34:05,595 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:34:05,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:34:05,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:34:05,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:34:05,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:34:05,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:34:05,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:34:05,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:34:05,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:34:05,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:34:05,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:34:05,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:34:05,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:34:05,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:34:05,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:34:05,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:34:05,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:34:05,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:34:05,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:34:05,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:34:05,601 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:34:05,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:34:05,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:34:05,602 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:34:05,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:34:05,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:34:05,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:34:05,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:34:05,861 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:34:05,863 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:34:05,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:34:07,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:34:07,264 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:34:07,265 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:34:07,277 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743407986/00f24c1c397a4a9a98f8a8c77ce4662e/FLAG361ce0cdb [2023-08-03 18:34:07,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743407986/00f24c1c397a4a9a98f8a8c77ce4662e [2023-08-03 18:34:07,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:34:07,295 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:34:07,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:34:07,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:34:07,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:34:07,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5160c199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07, skipping insertion in model container [2023-08-03 18:34:07,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,353 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:34:07,513 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_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-03 18:34:07,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:34:07,701 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:34:07,713 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_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-03 18:34:07,733 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:34:07,735 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:34:07,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:34:07,776 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:34:07,776 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:34:07,782 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:34:07,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07 WrapperNode [2023-08-03 18:34:07,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:34:07,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:34:07,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:34:07,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:34:07,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,822 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-08-03 18:34:07,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:34:07,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:34:07,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:34:07,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:34:07,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:34:07,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:34:07,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:34:07,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:34:07,849 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (1/1) ... [2023-08-03 18:34:07,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:34:07,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:07,877 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 18:34:07,882 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 18:34:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:34:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:34:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:34:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:34:07,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:34:07,902 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:34:07,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:34:07,902 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:34:07,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:34:07,902 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:34:07,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:34:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:34:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:34:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:34:07,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:34:07,904 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 18:34:08,018 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:34:08,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:34:08,158 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:34:08,164 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:34:08,164 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:34:08,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:34:08 BoogieIcfgContainer [2023-08-03 18:34:08,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:34:08,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:34:08,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:34:08,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:34:08,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:34:07" (1/3) ... [2023-08-03 18:34:08,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1ed8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:34:08, skipping insertion in model container [2023-08-03 18:34:08,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:34:07" (2/3) ... [2023-08-03 18:34:08,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1ed8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:34:08, skipping insertion in model container [2023-08-03 18:34:08,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:34:08" (3/3) ... [2023-08-03 18:34:08,173 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:34:08,187 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:34:08,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:34:08,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:34:08,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:34:08,245 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:34:08,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 105 transitions, 225 flow [2023-08-03 18:34:08,375 INFO L124 PetriNetUnfolderBase]: 30/412 cut-off events. [2023-08-03 18:34:08,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:34:08,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 412 events. 30/412 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1844 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 241. Up to 16 conditions per place. [2023-08-03 18:34:08,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 105 transitions, 225 flow [2023-08-03 18:34:08,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 93 transitions, 201 flow [2023-08-03 18:34:08,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:34:08,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 93 transitions, 201 flow [2023-08-03 18:34:08,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 93 transitions, 201 flow [2023-08-03 18:34:08,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 93 transitions, 201 flow [2023-08-03 18:34:08,447 INFO L124 PetriNetUnfolderBase]: 22/316 cut-off events. [2023-08-03 18:34:08,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:34:08,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 316 events. 22/316 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1297 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 193. Up to 16 conditions per place. [2023-08-03 18:34:08,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 1586 [2023-08-03 18:34:10,283 INFO L134 LiptonReduction]: Checked pairs total: 2716 [2023-08-03 18:34:10,284 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-08-03 18:34:10,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:34:10,313 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;@759985f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:34:10,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:34:10,317 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:34:10,318 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-03 18:34:10,318 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:34:10,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:10,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:34:10,319 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 18:34:10,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash 353584788, now seen corresponding path program 1 times [2023-08-03 18:34:10,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:10,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331577829] [2023-08-03 18:34:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:10,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:10,522 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 18:34:10,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:10,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331577829] [2023-08-03 18:34:10,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331577829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:10,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:34:10,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:34:10,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203123630] [2023-08-03 18:34:10,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:10,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:34:10,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:10,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:34:10,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:34:10,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2023-08-03 18:34:10,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 18:34:10,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:10,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2023-08-03 18:34:10,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:10,720 INFO L124 PetriNetUnfolderBase]: 400/751 cut-off events. [2023-08-03 18:34:10,720 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 18:34:10,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 751 events. 400/751 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3710 event pairs, 222 based on Foata normal form. 0/688 useless extension candidates. Maximal degree in co-relation 1459. Up to 668 conditions per place. [2023-08-03 18:34:10,730 INFO L140 encePairwiseOnDemand]: 178/182 looper letters, 21 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-03 18:34:10,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 117 flow [2023-08-03 18:34:10,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:34:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:34:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-08-03 18:34:10,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2023-08-03 18:34:10,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-08-03 18:34:10,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-08-03 18:34:10,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:10,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-08-03 18:34:10,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 18:34:10,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 18:34:10,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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 18:34:10,764 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 67 flow. Second operand 3 states and 301 transitions. [2023-08-03 18:34:10,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 117 flow [2023-08-03 18:34:10,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:34:10,768 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 73 flow [2023-08-03 18:34:10,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-03 18:34:10,772 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-03 18:34:10,773 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 73 flow [2023-08-03 18:34:10,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 18:34:10,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:10,773 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:34:10,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:34:10,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 18:34:10,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:10,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1927533066, now seen corresponding path program 1 times [2023-08-03 18:34:10,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:10,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768095491] [2023-08-03 18:34:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:10,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:34:10,812 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:34:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:34:10,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:34:10,858 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:34:10,859 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 18:34:10,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 18:34:10,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 18:34:10,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 18:34:10,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:34:10,862 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:34:10,865 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:34:10,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:34:10,887 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:34:10,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 125 transitions, 286 flow [2023-08-03 18:34:11,059 INFO L124 PetriNetUnfolderBase]: 93/1298 cut-off events. [2023-08-03 18:34:11,060 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:34:11,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 1298 events. 93/1298 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8869 event pairs, 0 based on Foata normal form. 0/1139 useless extension candidates. Maximal degree in co-relation 939. Up to 54 conditions per place. [2023-08-03 18:34:11,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 125 transitions, 286 flow [2023-08-03 18:34:11,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 113 transitions, 262 flow [2023-08-03 18:34:11,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:34:11,070 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 113 transitions, 262 flow [2023-08-03 18:34:11,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 113 transitions, 262 flow [2023-08-03 18:34:11,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 113 transitions, 262 flow [2023-08-03 18:34:11,159 INFO L124 PetriNetUnfolderBase]: 66/974 cut-off events. [2023-08-03 18:34:11,159 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:34:11,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 974 events. 66/974 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6102 event pairs, 0 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 723. Up to 54 conditions per place. [2023-08-03 18:34:11,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 3852 [2023-08-03 18:34:12,956 INFO L134 LiptonReduction]: Checked pairs total: 7022 [2023-08-03 18:34:12,956 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-03 18:34:12,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:34:12,959 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;@759985f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:34:12,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:34:12,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:34:12,961 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 18:34:12,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:34:12,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:12,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:34:12,962 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 18:34:12,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash 572151353, now seen corresponding path program 1 times [2023-08-03 18:34:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:12,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107733778] [2023-08-03 18:34:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:13,035 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 18:34:13,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:13,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107733778] [2023-08-03 18:34:13,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107733778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:13,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:34:13,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:34:13,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390566231] [2023-08-03 18:34:13,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:13,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:34:13,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:34:13,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:34:13,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 208 [2023-08-03 18:34:13,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 18:34:13,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:13,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 208 [2023-08-03 18:34:13,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:16,626 INFO L124 PetriNetUnfolderBase]: 33046/46376 cut-off events. [2023-08-03 18:34:16,626 INFO L125 PetriNetUnfolderBase]: For 1788/1788 co-relation queries the response was YES. [2023-08-03 18:34:16,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92349 conditions, 46376 events. 33046/46376 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 302290 event pairs, 26064 based on Foata normal form. 0/43469 useless extension candidates. Maximal degree in co-relation 26122. Up to 43520 conditions per place. [2023-08-03 18:34:16,990 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 31 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-03 18:34:16,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 43 transitions, 188 flow [2023-08-03 18:34:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:34:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:34:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-03 18:34:16,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801282051282052 [2023-08-03 18:34:16,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-03 18:34:16,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-03 18:34:16,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:16,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-03 18:34:16,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 18:34:16,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:16,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:16,999 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 116 flow. Second operand 3 states and 362 transitions. [2023-08-03 18:34:16,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 43 transitions, 188 flow [2023-08-03 18:34:17,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 182 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:34:17,007 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 120 flow [2023-08-03 18:34:17,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-08-03 18:34:17,008 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-03 18:34:17,008 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 120 flow [2023-08-03 18:34:17,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 18:34:17,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:17,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:34:17,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:34:17,009 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 18:34:17,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:17,010 INFO L85 PathProgramCache]: Analyzing trace with hash 558820282, now seen corresponding path program 1 times [2023-08-03 18:34:17,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:17,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416707900] [2023-08-03 18:34:17,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:17,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:17,071 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 18:34:17,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:17,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416707900] [2023-08-03 18:34:17,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416707900] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:17,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989425372] [2023-08-03 18:34:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:17,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:17,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:17,081 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 18:34:17,101 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 18:34:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:17,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:34:17,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:17,190 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 18:34:17,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:34:17,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989425372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:17,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:34:17,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:34:17,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747379446] [2023-08-03 18:34:17,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:17,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:34:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:34:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:34:17,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 208 [2023-08-03 18:34:17,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 18:34:17,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:17,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 208 [2023-08-03 18:34:17,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:19,879 INFO L124 PetriNetUnfolderBase]: 31406/44864 cut-off events. [2023-08-03 18:34:19,880 INFO L125 PetriNetUnfolderBase]: For 1287/1287 co-relation queries the response was YES. [2023-08-03 18:34:19,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88216 conditions, 44864 events. 31406/44864 cut-off events. For 1287/1287 co-relation queries the response was YES. Maximal size of possible extension queue 1554. Compared 300785 event pairs, 24928 based on Foata normal form. 0/42548 useless extension candidates. Maximal degree in co-relation 88179. Up to 40987 conditions per place. [2023-08-03 18:34:20,142 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 36 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-03 18:34:20,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 212 flow [2023-08-03 18:34:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:34:20,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:34:20,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-08-03 18:34:20,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849358974358975 [2023-08-03 18:34:20,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-08-03 18:34:20,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-08-03 18:34:20,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:20,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-08-03 18:34:20,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 18:34:20,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:20,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:20,147 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 120 flow. Second operand 3 states and 365 transitions. [2023-08-03 18:34:20,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 212 flow [2023-08-03 18:34:20,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:34:20,149 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 130 flow [2023-08-03 18:34:20,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-08-03 18:34:20,150 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2023-08-03 18:34:20,150 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 130 flow [2023-08-03 18:34:20,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 18:34:20,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:20,151 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:34:20,164 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 18:34:20,355 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 18:34:20,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 18:34:20,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash -148216105, now seen corresponding path program 1 times [2023-08-03 18:34:20,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:20,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943823079] [2023-08-03 18:34:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:20,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:34:20,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:20,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943823079] [2023-08-03 18:34:20,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943823079] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:20,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970442064] [2023-08-03 18:34:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:20,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:20,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:20,417 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 18:34:20,444 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 18:34:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:20,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:34:20,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:20,534 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 18:34:20,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:34:20,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970442064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:20,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:34:20,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:34:20,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799731174] [2023-08-03 18:34:20,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:20,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:20,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:34:20,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 208 [2023-08-03 18:34:20,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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 18:34:20,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:20,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 208 [2023-08-03 18:34:20,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:23,368 INFO L124 PetriNetUnfolderBase]: 31394/45039 cut-off events. [2023-08-03 18:34:23,368 INFO L125 PetriNetUnfolderBase]: For 1503/1503 co-relation queries the response was YES. [2023-08-03 18:34:23,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88701 conditions, 45039 events. 31394/45039 cut-off events. For 1503/1503 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 304411 event pairs, 20088 based on Foata normal form. 9/43020 useless extension candidates. Maximal degree in co-relation 25250. Up to 41065 conditions per place. [2023-08-03 18:34:23,652 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 35 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2023-08-03 18:34:23,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 48 transitions, 225 flow [2023-08-03 18:34:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:34:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:34:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2023-08-03 18:34:23,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567307692307693 [2023-08-03 18:34:23,656 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2023-08-03 18:34:23,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2023-08-03 18:34:23,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:23,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2023-08-03 18:34:23,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 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 18:34:23,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 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 18:34:23,664 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 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 18:34:23,664 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 130 flow. Second operand 5 states and 579 transitions. [2023-08-03 18:34:23,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 48 transitions, 225 flow [2023-08-03 18:34:23,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:34:23,667 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 146 flow [2023-08-03 18:34:23,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2023-08-03 18:34:23,668 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2023-08-03 18:34:23,668 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 146 flow [2023-08-03 18:34:23,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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 18:34:23,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:23,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:34:23,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 18:34:23,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:23,874 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 18:34:23,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2042629401, now seen corresponding path program 1 times [2023-08-03 18:34:23,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:23,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693691067] [2023-08-03 18:34:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:23,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:23,954 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 18:34:23,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:23,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693691067] [2023-08-03 18:34:23,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693691067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:23,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318248982] [2023-08-03 18:34:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:23,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:23,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:23,957 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 18:34:23,961 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 18:34:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:24,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:34:24,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:24,044 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 18:34:24,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:34:24,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318248982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:24,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:34:24,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:34:24,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189930464] [2023-08-03 18:34:24,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:24,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:34:24,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:34:24,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:34:24,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 208 [2023-08-03 18:34:24,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 146 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 18:34:24,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:24,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 208 [2023-08-03 18:34:24,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:26,582 INFO L124 PetriNetUnfolderBase]: 30722/43544 cut-off events. [2023-08-03 18:34:26,582 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2023-08-03 18:34:26,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86252 conditions, 43544 events. 30722/43544 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 288687 event pairs, 23570 based on Foata normal form. 0/41660 useless extension candidates. Maximal degree in co-relation 24560. Up to 37736 conditions per place. [2023-08-03 18:34:26,829 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 42 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-03 18:34:26,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 258 flow [2023-08-03 18:34:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:34:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:34:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-03 18:34:26,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913461538461539 [2023-08-03 18:34:26,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-03 18:34:26,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-03 18:34:26,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:26,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-03 18:34:26,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 18:34:26,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:26,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:26,835 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 146 flow. Second operand 3 states and 369 transitions. [2023-08-03 18:34:26,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 258 flow [2023-08-03 18:34:26,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 251 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 18:34:26,840 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 151 flow [2023-08-03 18:34:26,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=58, 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=151, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2023-08-03 18:34:26,843 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2023-08-03 18:34:26,843 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 151 flow [2023-08-03 18:34:26,843 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 18:34:26,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:26,843 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:34:26,848 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 18:34:27,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:27,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 18:34:27,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:27,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1185490664, now seen corresponding path program 1 times [2023-08-03 18:34:27,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:27,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275531780] [2023-08-03 18:34:27,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:27,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:27,111 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 18:34:27,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:27,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275531780] [2023-08-03 18:34:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275531780] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:27,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133442079] [2023-08-03 18:34:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:27,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:27,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:27,113 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 18:34:27,125 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 18:34:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:27,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:34:27,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:27,210 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 18:34:27,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:34:27,230 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 18:34:27,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133442079] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:34:27,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:34:27,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:34:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249277723] [2023-08-03 18:34:27,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:34:27,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:34:27,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 208 [2023-08-03 18:34:27,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 18:34:27,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:27,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 208 [2023-08-03 18:34:27,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:29,339 INFO L124 PetriNetUnfolderBase]: 24220/34031 cut-off events. [2023-08-03 18:34:29,339 INFO L125 PetriNetUnfolderBase]: For 3738/3738 co-relation queries the response was YES. [2023-08-03 18:34:29,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70276 conditions, 34031 events. 24220/34031 cut-off events. For 3738/3738 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 214210 event pairs, 14814 based on Foata normal form. 3/33917 useless extension candidates. Maximal degree in co-relation 24970. Up to 31258 conditions per place. [2023-08-03 18:34:29,538 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 36 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-03 18:34:29,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 48 transitions, 237 flow [2023-08-03 18:34:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:34:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:34:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 470 transitions. [2023-08-03 18:34:29,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5649038461538461 [2023-08-03 18:34:29,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 470 transitions. [2023-08-03 18:34:29,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 470 transitions. [2023-08-03 18:34:29,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:29,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 470 transitions. [2023-08-03 18:34:29,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 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 18:34:29,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 18:34:29,549 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 18:34:29,549 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 151 flow. Second operand 4 states and 470 transitions. [2023-08-03 18:34:29,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 48 transitions, 237 flow [2023-08-03 18:34:29,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 48 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:34:29,554 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 147 flow [2023-08-03 18:34:29,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2023-08-03 18:34:29,555 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2023-08-03 18:34:29,555 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 147 flow [2023-08-03 18:34:29,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 18:34:29,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:29,556 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:34:29,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 18:34:29,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:29,761 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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 18:34:29,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:29,761 INFO L85 PathProgramCache]: Analyzing trace with hash 423969430, now seen corresponding path program 1 times [2023-08-03 18:34:29,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:29,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109931418] [2023-08-03 18:34:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:29,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:29,815 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 18:34:29,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:29,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109931418] [2023-08-03 18:34:29,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109931418] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:29,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33954079] [2023-08-03 18:34:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:29,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:29,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:29,821 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 18:34:29,848 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 18:34:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:29,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:34:29,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:29,919 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 18:34:29,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:34:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33954079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:29,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:34:29,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:34:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578983371] [2023-08-03 18:34:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:29,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:29,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:34:29,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 208 [2023-08-03 18:34:29,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 18:34:29,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:29,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 208 [2023-08-03 18:34:29,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:31,868 INFO L124 PetriNetUnfolderBase]: 24004/33739 cut-off events. [2023-08-03 18:34:31,869 INFO L125 PetriNetUnfolderBase]: For 3166/3166 co-relation queries the response was YES. [2023-08-03 18:34:31,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69349 conditions, 33739 events. 24004/33739 cut-off events. For 3166/3166 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 212683 event pairs, 6718 based on Foata normal form. 81/33703 useless extension candidates. Maximal degree in co-relation 24641. Up to 30429 conditions per place. [2023-08-03 18:34:32,061 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 48 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-08-03 18:34:32,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 291 flow [2023-08-03 18:34:32,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:34:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:34:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 591 transitions. [2023-08-03 18:34:32,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5682692307692307 [2023-08-03 18:34:32,064 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 591 transitions. [2023-08-03 18:34:32,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 591 transitions. [2023-08-03 18:34:32,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:32,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 591 transitions. [2023-08-03 18:34:32,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.2) internal successors, (591), 5 states have internal predecessors, (591), 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 18:34:32,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 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 18:34:32,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 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 18:34:32,068 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 147 flow. Second operand 5 states and 591 transitions. [2023-08-03 18:34:32,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 291 flow [2023-08-03 18:34:32,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 18:34:32,075 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 159 flow [2023-08-03 18:34:32,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2023-08-03 18:34:32,077 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-08-03 18:34:32,077 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 159 flow [2023-08-03 18:34:32,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 18:34:32,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:32,078 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 18:34:32,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 18:34:32,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:32,282 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 18:34:32,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:32,283 INFO L85 PathProgramCache]: Analyzing trace with hash 660456476, now seen corresponding path program 1 times [2023-08-03 18:34:32,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:32,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915759343] [2023-08-03 18:34:32,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:32,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:32,367 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 18:34:32,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915759343] [2023-08-03 18:34:32,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915759343] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737908291] [2023-08-03 18:34:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:32,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:32,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:32,369 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 18:34:32,378 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 18:34:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:32,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:34:32,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:32,473 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 18:34:32,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:34:32,488 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 18:34:32,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737908291] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:34:32,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:34:32,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:34:32,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973404506] [2023-08-03 18:34:32,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:34:32,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:32,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:32,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:34:32,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 208 [2023-08-03 18:34:32,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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 18:34:32,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:32,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 208 [2023-08-03 18:34:32,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:34,416 INFO L124 PetriNetUnfolderBase]: 18982/26368 cut-off events. [2023-08-03 18:34:34,416 INFO L125 PetriNetUnfolderBase]: For 2971/2971 co-relation queries the response was YES. [2023-08-03 18:34:34,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54505 conditions, 26368 events. 18982/26368 cut-off events. For 2971/2971 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 156916 event pairs, 11848 based on Foata normal form. 27/26305 useless extension candidates. Maximal degree in co-relation 19322. Up to 23785 conditions per place. [2023-08-03 18:34:34,531 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 44 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-03 18:34:34,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 275 flow [2023-08-03 18:34:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:34:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:34:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 478 transitions. [2023-08-03 18:34:34,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745192307692307 [2023-08-03 18:34:34,534 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 478 transitions. [2023-08-03 18:34:34,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 478 transitions. [2023-08-03 18:34:34,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:34,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 478 transitions. [2023-08-03 18:34:34,535 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 18:34:34,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 18:34:34,537 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 18:34:34,537 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 159 flow. Second operand 4 states and 478 transitions. [2023-08-03 18:34:34,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 275 flow [2023-08-03 18:34:34,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 55 transitions, 270 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:34:34,541 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 150 flow [2023-08-03 18:34:34,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2023-08-03 18:34:34,541 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2023-08-03 18:34:34,541 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 150 flow [2023-08-03 18:34:34,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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 18:34:34,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:34,542 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 18:34:34,549 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 18:34:34,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:34,749 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 18:34:34,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1183330712, now seen corresponding path program 1 times [2023-08-03 18:34:34,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:34,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705850686] [2023-08-03 18:34:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:34,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:34,816 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 18:34:34,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:34,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705850686] [2023-08-03 18:34:34,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705850686] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:34,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671933371] [2023-08-03 18:34:34,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:34,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:34,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:34,820 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 18:34:34,823 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 18:34:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:34,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:34:34,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:34,923 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 18:34:34,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:34:34,942 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 18:34:34,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671933371] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:34:34,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:34:34,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:34:34,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862654604] [2023-08-03 18:34:34,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:34:34,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:34,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:34,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:34,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:34:34,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 208 [2023-08-03 18:34:34,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 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 18:34:34,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:34,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 208 [2023-08-03 18:34:34,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:36,425 INFO L124 PetriNetUnfolderBase]: 17362/23371 cut-off events. [2023-08-03 18:34:36,426 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2023-08-03 18:34:36,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49186 conditions, 23371 events. 17362/23371 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 1060. Compared 128947 event pairs, 6886 based on Foata normal form. 243/23524 useless extension candidates. Maximal degree in co-relation 17441. Up to 11794 conditions per place. [2023-08-03 18:34:36,540 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 52 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-03 18:34:36,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 310 flow [2023-08-03 18:34:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:34:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:34:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 487 transitions. [2023-08-03 18:34:36,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853365384615384 [2023-08-03 18:34:36,543 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 487 transitions. [2023-08-03 18:34:36,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 487 transitions. [2023-08-03 18:34:36,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:36,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 487 transitions. [2023-08-03 18:34:36,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:34:36,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 18:34:36,546 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 18:34:36,546 INFO L175 Difference]: Start difference. First operand has 65 places, 40 transitions, 150 flow. Second operand 4 states and 487 transitions. [2023-08-03 18:34:36,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 310 flow [2023-08-03 18:34:36,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:34:36,550 INFO L231 Difference]: Finished difference. Result has 67 places, 41 transitions, 164 flow [2023-08-03 18:34:36,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=41} [2023-08-03 18:34:36,550 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2023-08-03 18:34:36,550 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 41 transitions, 164 flow [2023-08-03 18:34:36,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 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 18:34:36,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:36,551 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 18:34:36,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 18:34:36,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:36,759 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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 18:34:36,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:36,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1585006014, now seen corresponding path program 1 times [2023-08-03 18:34:36,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:36,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442381458] [2023-08-03 18:34:36,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:36,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:36,842 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 18:34:36,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:36,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442381458] [2023-08-03 18:34:36,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442381458] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:36,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287290597] [2023-08-03 18:34:36,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:36,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:36,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:36,845 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 18:34:36,869 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 18:34:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:36,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:34:36,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:36,975 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 18:34:36,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:34:36,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287290597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:36,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:34:36,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:34:36,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819884316] [2023-08-03 18:34:36,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:36,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:36,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:36,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:36,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:34:36,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 208 [2023-08-03 18:34:36,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 41 transitions, 164 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 18:34:36,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:36,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 208 [2023-08-03 18:34:36,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:38,339 INFO L124 PetriNetUnfolderBase]: 14446/19240 cut-off events. [2023-08-03 18:34:38,339 INFO L125 PetriNetUnfolderBase]: For 7135/7135 co-relation queries the response was YES. [2023-08-03 18:34:38,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43967 conditions, 19240 events. 14446/19240 cut-off events. For 7135/7135 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 99170 event pairs, 568 based on Foata normal form. 729/19879 useless extension candidates. Maximal degree in co-relation 15539. Up to 10935 conditions per place. [2023-08-03 18:34:38,455 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 60 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-03 18:34:38,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 344 flow [2023-08-03 18:34:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:34:38,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:34:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 602 transitions. [2023-08-03 18:34:38,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788461538461539 [2023-08-03 18:34:38,457 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 602 transitions. [2023-08-03 18:34:38,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 602 transitions. [2023-08-03 18:34:38,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:38,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 602 transitions. [2023-08-03 18:34:38,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 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 18:34:38,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 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 18:34:38,461 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 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 18:34:38,461 INFO L175 Difference]: Start difference. First operand has 67 places, 41 transitions, 164 flow. Second operand 5 states and 602 transitions. [2023-08-03 18:34:38,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 344 flow [2023-08-03 18:34:38,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 337 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 18:34:38,486 INFO L231 Difference]: Finished difference. Result has 67 places, 39 transitions, 153 flow [2023-08-03 18:34:38,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=67, PETRI_TRANSITIONS=39} [2023-08-03 18:34:38,487 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2023-08-03 18:34:38,487 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 39 transitions, 153 flow [2023-08-03 18:34:38,487 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 18:34:38,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:38,487 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 18:34:38,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 18:34:38,692 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,SelfDestructingSolverStorable10 [2023-08-03 18:34:38,693 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 18:34:38,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:38,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1585006684, now seen corresponding path program 1 times [2023-08-03 18:34:38,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:38,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291696774] [2023-08-03 18:34:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:38,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:38,892 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 18:34:38,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:38,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291696774] [2023-08-03 18:34:38,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291696774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:38,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:34:38,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:34:38,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807194448] [2023-08-03 18:34:38,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:38,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:34:38,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:38,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:34:38,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:34:38,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 208 [2023-08-03 18:34:38,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 39 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 18:34:38,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:38,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 208 [2023-08-03 18:34:38,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:40,595 INFO L124 PetriNetUnfolderBase]: 26842/36295 cut-off events. [2023-08-03 18:34:40,595 INFO L125 PetriNetUnfolderBase]: For 17621/17621 co-relation queries the response was YES. [2023-08-03 18:34:40,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80512 conditions, 36295 events. 26842/36295 cut-off events. For 17621/17621 co-relation queries the response was YES. Maximal size of possible extension queue 1346. Compared 208586 event pairs, 10771 based on Foata normal form. 9/36263 useless extension candidates. Maximal degree in co-relation 80421. Up to 33886 conditions per place. [2023-08-03 18:34:40,886 INFO L140 encePairwiseOnDemand]: 202/208 looper letters, 54 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2023-08-03 18:34:40,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 391 flow [2023-08-03 18:34:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:34:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:34:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-08-03 18:34:40,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2023-08-03 18:34:40,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-08-03 18:34:40,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-08-03 18:34:40,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:40,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-08-03 18:34:40,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 18:34:40,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:40,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:40,891 INFO L175 Difference]: Start difference. First operand has 67 places, 39 transitions, 153 flow. Second operand 3 states and 366 transitions. [2023-08-03 18:34:40,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 391 flow [2023-08-03 18:34:40,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 381 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:34:40,896 INFO L231 Difference]: Finished difference. Result has 67 places, 43 transitions, 181 flow [2023-08-03 18:34:40,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=67, PETRI_TRANSITIONS=43} [2023-08-03 18:34:40,897 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2023-08-03 18:34:40,897 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 43 transitions, 181 flow [2023-08-03 18:34:40,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 18:34:40,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:40,897 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 18:34:40,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 18:34:40,898 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 18:34:40,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1890566274, now seen corresponding path program 1 times [2023-08-03 18:34:40,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:40,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842754048] [2023-08-03 18:34:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:40,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:41,010 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 18:34:41,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842754048] [2023-08-03 18:34:41,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842754048] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:41,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:34:41,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:34:41,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41676565] [2023-08-03 18:34:41,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:41,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 18:34:41,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:41,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 18:34:41,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 18:34:41,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 208 [2023-08-03 18:34:41,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 43 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 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 18:34:41,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:41,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 208 [2023-08-03 18:34:41,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:42,836 INFO L124 PetriNetUnfolderBase]: 26194/34549 cut-off events. [2023-08-03 18:34:42,836 INFO L125 PetriNetUnfolderBase]: For 11878/11878 co-relation queries the response was YES. [2023-08-03 18:34:43,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86014 conditions, 34549 events. 26194/34549 cut-off events. For 11878/11878 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 178816 event pairs, 7933 based on Foata normal form. 135/34668 useless extension candidates. Maximal degree in co-relation 62015. Up to 27313 conditions per place. [2023-08-03 18:34:43,137 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 50 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-03 18:34:43,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 351 flow [2023-08-03 18:34:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:34:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:34:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-08-03 18:34:43,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2023-08-03 18:34:43,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-08-03 18:34:43,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-08-03 18:34:43,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:43,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-08-03 18:34:43,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 18:34:43,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:43,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:43,142 INFO L175 Difference]: Start difference. First operand has 67 places, 43 transitions, 181 flow. Second operand 3 states and 360 transitions. [2023-08-03 18:34:43,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 351 flow [2023-08-03 18:34:43,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 60 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:34:43,167 INFO L231 Difference]: Finished difference. Result has 69 places, 45 transitions, 205 flow [2023-08-03 18:34:43,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2023-08-03 18:34:43,168 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2023-08-03 18:34:43,168 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 205 flow [2023-08-03 18:34:43,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 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 18:34:43,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:43,169 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 18:34:43,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 18:34:43,169 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 18:34:43,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:43,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2046926027, now seen corresponding path program 1 times [2023-08-03 18:34:43,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:43,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309716182] [2023-08-03 18:34:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:43,372 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 18:34:43,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:43,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309716182] [2023-08-03 18:34:43,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309716182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:43,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444666616] [2023-08-03 18:34:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:43,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:43,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:43,375 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 18:34:43,381 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 18:34:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:43,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 18:34:43,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:43,522 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 18:34:43,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:34:43,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444666616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:43,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:34:43,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-03 18:34:43,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206572536] [2023-08-03 18:34:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:34:43,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:34:43,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:34:43,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 208 [2023-08-03 18:34:43,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 18:34:43,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:43,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 208 [2023-08-03 18:34:43,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:44,476 INFO L124 PetriNetUnfolderBase]: 13396/17482 cut-off events. [2023-08-03 18:34:44,476 INFO L125 PetriNetUnfolderBase]: For 13880/13880 co-relation queries the response was YES. [2023-08-03 18:34:44,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48347 conditions, 17482 events. 13396/17482 cut-off events. For 13880/13880 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 83515 event pairs, 2973 based on Foata normal form. 64/17498 useless extension candidates. Maximal degree in co-relation 30750. Up to 16221 conditions per place. [2023-08-03 18:34:44,620 INFO L140 encePairwiseOnDemand]: 200/208 looper letters, 65 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2023-08-03 18:34:44,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 514 flow [2023-08-03 18:34:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:34:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:34:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-03 18:34:44,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5977564102564102 [2023-08-03 18:34:44,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-03 18:34:44,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-03 18:34:44,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:44,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-03 18:34:44,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 18:34:44,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:44,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 states have internal predecessors, (832), 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 18:34:44,625 INFO L175 Difference]: Start difference. First operand has 69 places, 45 transitions, 205 flow. Second operand 3 states and 373 transitions. [2023-08-03 18:34:44,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 514 flow [2023-08-03 18:34:44,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:34:44,632 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 247 flow [2023-08-03 18:34:44,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2023-08-03 18:34:44,632 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2023-08-03 18:34:44,633 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 247 flow [2023-08-03 18:34:44,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 18:34:44,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:44,633 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 18:34:44,643 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 18:34:44,843 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,SelfDestructingSolverStorable13 [2023-08-03 18:34:44,843 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 18:34:44,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:44,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1847494346, now seen corresponding path program 1 times [2023-08-03 18:34:44,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:44,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423123513] [2023-08-03 18:34:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:44,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:44,983 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 18:34:44,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:44,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423123513] [2023-08-03 18:34:44,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423123513] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:44,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681700466] [2023-08-03 18:34:44,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:44,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:44,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:44,986 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 18:34:44,989 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 18:34:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:45,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 18:34:45,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:45,130 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 18:34:45,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:34:45,227 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 18:34:45,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681700466] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:34:45,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:34:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 6 [2023-08-03 18:34:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765290081] [2023-08-03 18:34:45,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:34:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 18:34:45,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:45,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 18:34:45,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-03 18:34:45,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 208 [2023-08-03 18:34:45,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 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 18:34:45,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:45,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 208 [2023-08-03 18:34:45,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:46,931 INFO L124 PetriNetUnfolderBase]: 17872/23559 cut-off events. [2023-08-03 18:34:46,931 INFO L125 PetriNetUnfolderBase]: For 22525/24251 co-relation queries the response was YES. [2023-08-03 18:34:47,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72681 conditions, 23559 events. 17872/23559 cut-off events. For 22525/24251 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 118024 event pairs, 733 based on Foata normal form. 1381/24671 useless extension candidates. Maximal degree in co-relation 72575. Up to 8660 conditions per place. [2023-08-03 18:34:47,140 INFO L140 encePairwiseOnDemand]: 197/208 looper letters, 168 selfloop transitions, 45 changer transitions 0/218 dead transitions. [2023-08-03 18:34:47,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 218 transitions, 1496 flow [2023-08-03 18:34:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 18:34:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 18:34:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1054 transitions. [2023-08-03 18:34:47,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563034188034188 [2023-08-03 18:34:47,143 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1054 transitions. [2023-08-03 18:34:47,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1054 transitions. [2023-08-03 18:34:47,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:47,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1054 transitions. [2023-08-03 18:34:47,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.11111111111111) internal successors, (1054), 9 states have internal predecessors, (1054), 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 18:34:47,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 208.0) internal successors, (2080), 10 states have internal predecessors, (2080), 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 18:34:47,148 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 208.0) internal successors, (2080), 10 states have internal predecessors, (2080), 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 18:34:47,148 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 247 flow. Second operand 9 states and 1054 transitions. [2023-08-03 18:34:47,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 218 transitions, 1496 flow [2023-08-03 18:34:47,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 218 transitions, 1485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:34:47,162 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 607 flow [2023-08-03 18:34:47,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=607, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2023-08-03 18:34:47,162 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2023-08-03 18:34:47,163 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 607 flow [2023-08-03 18:34:47,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 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 18:34:47,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:47,163 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, 1, 1, 1, 1, 1] [2023-08-03 18:34:47,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 18:34:47,368 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,SelfDestructingSolverStorable14 [2023-08-03 18:34:47,368 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 18:34:47,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash 82812894, now seen corresponding path program 1 times [2023-08-03 18:34:47,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:47,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153402896] [2023-08-03 18:34:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:47,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 18:34:47,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:47,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153402896] [2023-08-03 18:34:47,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153402896] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:47,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019465267] [2023-08-03 18:34:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:47,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:47,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:47,486 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 18:34:47,489 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 18:34:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:47,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-03 18:34:47,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:47,767 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 18:34:47,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:34:47,960 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 18:34:47,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019465267] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:34:47,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:34:47,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 16 [2023-08-03 18:34:47,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193489084] [2023-08-03 18:34:47,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:34:47,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-03 18:34:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-03 18:34:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-08-03 18:34:48,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 208 [2023-08-03 18:34:48,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 607 flow. Second operand has 17 states, 17 states have (on average 95.41176470588235) internal successors, (1622), 17 states have internal predecessors, (1622), 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 18:34:48,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:48,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 208 [2023-08-03 18:34:48,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:35:06,994 INFO L124 PetriNetUnfolderBase]: 155722/203850 cut-off events. [2023-08-03 18:35:06,995 INFO L125 PetriNetUnfolderBase]: For 542774/542774 co-relation queries the response was YES. [2023-08-03 18:35:08,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800128 conditions, 203850 events. 155722/203850 cut-off events. For 542774/542774 co-relation queries the response was YES. Maximal size of possible extension queue 8327. Compared 1337101 event pairs, 826 based on Foata normal form. 2771/206588 useless extension candidates. Maximal degree in co-relation 386126. Up to 83086 conditions per place. [2023-08-03 18:35:08,520 INFO L140 encePairwiseOnDemand]: 191/208 looper letters, 678 selfloop transitions, 530 changer transitions 659/1870 dead transitions. [2023-08-03 18:35:08,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 1870 transitions, 14817 flow [2023-08-03 18:35:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-08-03 18:35:08,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2023-08-03 18:35:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 8247 transitions. [2023-08-03 18:35:08,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535797817047817 [2023-08-03 18:35:08,537 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 8247 transitions. [2023-08-03 18:35:08,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 8247 transitions. [2023-08-03 18:35:08,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:35:08,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 8247 transitions. [2023-08-03 18:35:08,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 111.44594594594595) internal successors, (8247), 74 states have internal predecessors, (8247), 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 18:35:08,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 208.0) internal successors, (15600), 75 states have internal predecessors, (15600), 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 18:35:08,578 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 208.0) internal successors, (15600), 75 states have internal predecessors, (15600), 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 18:35:08,578 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 607 flow. Second operand 74 states and 8247 transitions. [2023-08-03 18:35:08,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 1870 transitions, 14817 flow [2023-08-03 18:36:05,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 1870 transitions, 14234 flow, removed 258 selfloop flow, removed 1 redundant places. [2023-08-03 18:36:05,014 INFO L231 Difference]: Finished difference. Result has 222 places, 629 transitions, 6646 flow [2023-08-03 18:36:05,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=6646, PETRI_PLACES=222, PETRI_TRANSITIONS=629} [2023-08-03 18:36:05,015 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 170 predicate places. [2023-08-03 18:36:05,015 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 629 transitions, 6646 flow [2023-08-03 18:36:05,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 95.41176470588235) internal successors, (1622), 17 states have internal predecessors, (1622), 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 18:36:05,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:36:05,016 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] [2023-08-03 18:36:05,024 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 18:36:05,224 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,SelfDestructingSolverStorable15 [2023-08-03 18:36:05,224 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 18:36:05,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:36:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1850624879, now seen corresponding path program 1 times [2023-08-03 18:36:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:36:05,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095901951] [2023-08-03 18:36:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:36:05,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:36:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:36:05,352 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 18:36:05,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:36:05,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095901951] [2023-08-03 18:36:05,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095901951] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:36:05,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809867527] [2023-08-03 18:36:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:36:05,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:36:05,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:36:05,354 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 18:36:05,357 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 18:36:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:36:05,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-03 18:36:05,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:36:05,969 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 18:36:05,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:36:06,143 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 18:36:06,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809867527] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:36:06,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:36:06,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 15 [2023-08-03 18:36:06,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613582524] [2023-08-03 18:36:06,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:36:06,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-03 18:36:06,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:36:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-03 18:36:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-08-03 18:36:06,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 208 [2023-08-03 18:36:06,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 629 transitions, 6646 flow. Second operand has 17 states, 17 states have (on average 98.41176470588235) internal successors, (1673), 17 states have internal predecessors, (1673), 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 18:36:06,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:36:06,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 208 [2023-08-03 18:36:06,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand