/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:11:40,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:11:40,348 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:11:40,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:11:40,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:11:40,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:11:40,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:11:40,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:11:40,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:11:40,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:11:40,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:11:40,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:11:40,387 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:11:40,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:11:40,389 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:11:40,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:11:40,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:11:40,389 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:11:40,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:11:40,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:11:40,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:11:40,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:11:40,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:11:40,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:11:40,391 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:11:40,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:11:40,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:11:40,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:11:40,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:11:40,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:11:40,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:11:40,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:11:40,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:11:40,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:11:40,394 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:11:40,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:11:40,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:11:40,395 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:11:40,395 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:11:40,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:11:40,395 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:11:40,395 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:11:40,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:11:40,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:11:40,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:11:40,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:11:40,643 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:11:40,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.opt_bound2.i [2023-08-03 23:11:41,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:11:41,950 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:11:41,951 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix010.opt_bound2.i [2023-08-03 23:11:41,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6502fbd2c/de11fc7a763a41588e8f3b6b452caaab/FLAG390cea783 [2023-08-03 23:11:41,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6502fbd2c/de11fc7a763a41588e8f3b6b452caaab [2023-08-03 23:11:41,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:11:41,976 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:11:41,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:11:41,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:11:41,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:11:41,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:11:41" (1/1) ... [2023-08-03 23:11:41,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274a2d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:41, skipping insertion in model container [2023-08-03 23:11:41,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:11:41" (1/1) ... [2023-08-03 23:11:42,015 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:11:42,153 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_mix010.opt_bound2.i[944,957] [2023-08-03 23:11:42,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:11:42,366 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:11:42,375 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_mix010.opt_bound2.i[944,957] [2023-08-03 23:11:42,382 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:11:42,383 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:11:42,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:11:42,435 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:11:42,436 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:11:42,442 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:11:42,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42 WrapperNode [2023-08-03 23:11:42,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:11:42,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:11:42,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:11:42,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:11:42,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,494 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2023-08-03 23:11:42,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:11:42,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:11:42,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:11:42,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:11:42,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:11:42,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:11:42,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:11:42,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:11:42,528 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (1/1) ... [2023-08-03 23:11:42,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:11:42,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:11:42,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 23:11:42,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 23:11:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:11:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:11:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:11:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:11:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:11:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:11:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:11:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:11:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:11:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:11:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:11:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:11:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:11:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:11:42,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:11:42,588 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 23:11:42,706 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:11:42,708 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:11:42,942 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:11:43,061 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:11:43,061 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 23:11:43,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:11:43 BoogieIcfgContainer [2023-08-03 23:11:43,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:11:43,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:11:43,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:11:43,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:11:43,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:11:41" (1/3) ... [2023-08-03 23:11:43,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9b3389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:11:43, skipping insertion in model container [2023-08-03 23:11:43,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:11:42" (2/3) ... [2023-08-03 23:11:43,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9b3389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:11:43, skipping insertion in model container [2023-08-03 23:11:43,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:11:43" (3/3) ... [2023-08-03 23:11:43,070 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix010.opt_bound2.i [2023-08-03 23:11:43,076 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:11:43,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:11:43,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:11:43,084 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:11:43,124 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:11:43,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 134 transitions, 283 flow [2023-08-03 23:11:43,260 INFO L124 PetriNetUnfolderBase]: 30/460 cut-off events. [2023-08-03 23:11:43,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:11:43,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 460 events. 30/460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2024 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 273. Up to 16 conditions per place. [2023-08-03 23:11:43,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 134 transitions, 283 flow [2023-08-03 23:11:43,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 105 transitions, 225 flow [2023-08-03 23:11:43,276 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:11:43,284 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 105 transitions, 225 flow [2023-08-03 23:11:43,286 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 105 transitions, 225 flow [2023-08-03 23:11:43,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 105 transitions, 225 flow [2023-08-03 23:11:43,324 INFO L124 PetriNetUnfolderBase]: 6/228 cut-off events. [2023-08-03 23:11:43,324 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:11:43,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 228 events. 6/228 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 671 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2023-08-03 23:11:43,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 1408 [2023-08-03 23:11:46,470 INFO L134 LiptonReduction]: Checked pairs total: 3082 [2023-08-03 23:11:46,470 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-03 23:11:46,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:11:46,487 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;@4b2ed6a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:11:46,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 23:11:46,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:11:46,493 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2023-08-03 23:11:46,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:11:46,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:11:46,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 23:11:46,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:11:46,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:11:46,497 INFO L85 PathProgramCache]: Analyzing trace with hash -455351099, now seen corresponding path program 1 times [2023-08-03 23:11:46,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:11:46,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741103431] [2023-08-03 23:11:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:11:46,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:11:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:11:46,751 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 23:11:46,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:11:46,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741103431] [2023-08-03 23:11:46,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741103431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:11:46,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:11:46,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:11:46,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064541621] [2023-08-03 23:11:46,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:11:46,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:11:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:11:46,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:11:46,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:11:46,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 219 [2023-08-03 23:11:46,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:11:46,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:11:46,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 219 [2023-08-03 23:11:46,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:11:46,926 INFO L124 PetriNetUnfolderBase]: 372/662 cut-off events. [2023-08-03 23:11:46,926 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 23:11:46,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 662 events. 372/662 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2950 event pairs, 290 based on Foata normal form. 0/608 useless extension candidates. Maximal degree in co-relation 1325. Up to 616 conditions per place. [2023-08-03 23:11:46,932 INFO L140 encePairwiseOnDemand]: 216/219 looper letters, 22 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-03 23:11:46,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 121 flow [2023-08-03 23:11:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:11:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:11:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-08-03 23:11:46,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563165905631659 [2023-08-03 23:11:46,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-08-03 23:11:46,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-08-03 23:11:46,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:11:46,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-08-03 23:11:46,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:11:46,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:11:46,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:11:46,957 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 67 flow. Second operand 3 states and 370 transitions. [2023-08-03 23:11:46,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 121 flow [2023-08-03 23:11:46,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 121 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 23:11:46,961 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 75 flow [2023-08-03 23:11:46,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-03 23:11:46,966 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-03 23:11:46,966 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 75 flow [2023-08-03 23:11:46,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:11:46,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:11:46,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:11:46,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:11:46,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:11:46,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:11:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash -462254642, now seen corresponding path program 1 times [2023-08-03 23:11:46,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:11:46,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508012940] [2023-08-03 23:11:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:11:46,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:11:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:11:46,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:11:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:11:47,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:11:47,046 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:11:47,047 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 23:11:47,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 23:11:47,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 23:11:47,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 23:11:47,050 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 23:11:47,052 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:11:47,053 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:11:47,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:11:47,090 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:11:47,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 160 transitions, 356 flow [2023-08-03 23:11:47,262 INFO L124 PetriNetUnfolderBase]: 93/1419 cut-off events. [2023-08-03 23:11:47,262 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:11:47,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 1419 events. 93/1419 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9870 event pairs, 0 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1024. Up to 54 conditions per place. [2023-08-03 23:11:47,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 160 transitions, 356 flow [2023-08-03 23:11:47,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 131 transitions, 298 flow [2023-08-03 23:11:47,273 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:11:47,273 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 131 transitions, 298 flow [2023-08-03 23:11:47,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 131 transitions, 298 flow [2023-08-03 23:11:47,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 298 flow [2023-08-03 23:11:47,349 INFO L124 PetriNetUnfolderBase]: 12/636 cut-off events. [2023-08-03 23:11:47,350 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:11:47,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 636 events. 12/636 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3306 event pairs, 0 based on Foata normal form. 0/594 useless extension candidates. Maximal degree in co-relation 502. Up to 27 conditions per place. [2023-08-03 23:11:47,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 4000 [2023-08-03 23:11:50,219 INFO L134 LiptonReduction]: Checked pairs total: 14891 [2023-08-03 23:11:50,219 INFO L136 LiptonReduction]: Total number of compositions: 90 [2023-08-03 23:11:50,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:11:50,222 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;@4b2ed6a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:11:50,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 23:11:50,229 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:11:50,230 INFO L124 PetriNetUnfolderBase]: 0/63 cut-off events. [2023-08-03 23:11:50,230 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-03 23:11:50,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:11:50,230 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 23:11:50,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:11:50,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:11:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1513362285, now seen corresponding path program 1 times [2023-08-03 23:11:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:11:50,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044089986] [2023-08-03 23:11:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:11:50,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:11:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:11:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:11:50,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:11:50,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044089986] [2023-08-03 23:11:50,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044089986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:11:50,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:11:50,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:11:50,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432230781] [2023-08-03 23:11:50,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:11:50,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:11:50,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:11:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:11:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:11:50,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 250 [2023-08-03 23:11:50,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:11:50,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:11:50,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 250 [2023-08-03 23:11:50,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:12:00,008 INFO L124 PetriNetUnfolderBase]: 78164/107310 cut-off events. [2023-08-03 23:12:00,008 INFO L125 PetriNetUnfolderBase]: For 5244/5244 co-relation queries the response was YES. [2023-08-03 23:12:00,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213821 conditions, 107310 events. 78164/107310 cut-off events. For 5244/5244 co-relation queries the response was YES. Maximal size of possible extension queue 3754. Compared 761226 event pairs, 63366 based on Foata normal form. 0/98751 useless extension candidates. Maximal degree in co-relation 61402. Up to 100362 conditions per place. [2023-08-03 23:12:00,784 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 36 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-03 23:12:00,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 216 flow [2023-08-03 23:12:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:12:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:12:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-08-03 23:12:00,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584 [2023-08-03 23:12:00,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-08-03 23:12:00,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-08-03 23:12:00,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:12:00,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-08-03 23:12:00,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:00,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:00,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:00,798 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 132 flow. Second operand 3 states and 438 transitions. [2023-08-03 23:12:00,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 216 flow [2023-08-03 23:12:00,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 52 transitions, 210 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 23:12:00,811 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 138 flow [2023-08-03 23:12:00,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2023-08-03 23:12:00,812 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-08-03 23:12:00,812 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 138 flow [2023-08-03 23:12:00,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:00,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:12:00,813 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 23:12:00,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 23:12:00,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:12:00,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:12:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1338477698, now seen corresponding path program 1 times [2023-08-03 23:12:00,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:12:00,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990733532] [2023-08-03 23:12:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:00,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:12:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:12:00,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:12:00,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990733532] [2023-08-03 23:12:00,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990733532] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:12:00,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209541969] [2023-08-03 23:12:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:00,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:12:00,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:12:00,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:12:00,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 23:12:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:01,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:12:01,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:12:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:12:01,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:12:01,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209541969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:12:01,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:12:01,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:12:01,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699248370] [2023-08-03 23:12:01,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:12:01,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:12:01,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:12:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:12:01,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:12:01,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 250 [2023-08-03 23:12:01,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:01,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:12:01,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 250 [2023-08-03 23:12:01,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:12:10,446 INFO L124 PetriNetUnfolderBase]: 78152/107265 cut-off events. [2023-08-03 23:12:10,446 INFO L125 PetriNetUnfolderBase]: For 4743/4743 co-relation queries the response was YES. [2023-08-03 23:12:10,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213323 conditions, 107265 events. 78152/107265 cut-off events. For 4743/4743 co-relation queries the response was YES. Maximal size of possible extension queue 3748. Compared 757570 event pairs, 52272 based on Foata normal form. 9/98742 useless extension candidates. Maximal degree in co-relation 76027. Up to 100315 conditions per place. [2023-08-03 23:12:11,111 INFO L140 encePairwiseOnDemand]: 246/250 looper letters, 39 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-08-03 23:12:11,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 238 flow [2023-08-03 23:12:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:12:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:12:11,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 704 transitions. [2023-08-03 23:12:11,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632 [2023-08-03 23:12:11,114 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 704 transitions. [2023-08-03 23:12:11,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 704 transitions. [2023-08-03 23:12:11,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:12:11,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 704 transitions. [2023-08-03 23:12:11,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:11,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:11,120 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:11,120 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 138 flow. Second operand 5 states and 704 transitions. [2023-08-03 23:12:11,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 238 flow [2023-08-03 23:12:11,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 56 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 23:12:11,122 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 152 flow [2023-08-03 23:12:11,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2023-08-03 23:12:11,123 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2023-08-03 23:12:11,123 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 152 flow [2023-08-03 23:12:11,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:11,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:12:11,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:12:11,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 23:12:11,329 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 23:12:11,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:12:11,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:12:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1246862619, now seen corresponding path program 1 times [2023-08-03 23:12:11,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:12:11,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97366462] [2023-08-03 23:12:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:12:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:12:11,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:12:11,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97366462] [2023-08-03 23:12:11,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97366462] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:12:11,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991285149] [2023-08-03 23:12:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:11,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:12:11,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:12:11,395 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 23:12:11,399 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 23:12:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:11,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 23:12:11,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:12:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:12:11,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:12:11,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991285149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:12:11,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:12:11,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 23:12:11,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387294646] [2023-08-03 23:12:11,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:12:11,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:12:11,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:12:11,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:12:11,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:12:11,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 250 [2023-08-03 23:12:11,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:11,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:12:11,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 250 [2023-08-03 23:12:11,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:12:20,092 INFO L124 PetriNetUnfolderBase]: 75822/102708 cut-off events. [2023-08-03 23:12:20,092 INFO L125 PetriNetUnfolderBase]: For 4522/4522 co-relation queries the response was YES. [2023-08-03 23:12:20,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205755 conditions, 102708 events. 75822/102708 cut-off events. For 4522/4522 co-relation queries the response was YES. Maximal size of possible extension queue 3777. Compared 711570 event pairs, 70446 based on Foata normal form. 0/95496 useless extension candidates. Maximal degree in co-relation 59168. Up to 96840 conditions per place. [2023-08-03 23:12:20,857 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 42 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-08-03 23:12:20,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 260 flow [2023-08-03 23:12:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:12:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:12:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-08-03 23:12:20,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5906666666666667 [2023-08-03 23:12:20,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-08-03 23:12:20,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-08-03 23:12:20,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:12:20,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-08-03 23:12:20,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:20,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:20,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:20,863 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 152 flow. Second operand 3 states and 443 transitions. [2023-08-03 23:12:20,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 260 flow [2023-08-03 23:12:20,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 58 transitions, 253 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 23:12:20,866 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 160 flow [2023-08-03 23:12:20,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2023-08-03 23:12:20,867 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2023-08-03 23:12:20,867 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 160 flow [2023-08-03 23:12:20,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:20,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:12:20,867 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:12:20,875 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 23:12:21,072 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 23:12:21,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:12:21,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:12:21,073 INFO L85 PathProgramCache]: Analyzing trace with hash 260456588, now seen corresponding path program 1 times [2023-08-03 23:12:21,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:12:21,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844408824] [2023-08-03 23:12:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:21,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:12:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:21,114 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 23:12:21,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:12:21,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844408824] [2023-08-03 23:12:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844408824] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:12:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196582495] [2023-08-03 23:12:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:21,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:12:21,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:12:21,117 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 23:12:21,136 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 23:12:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:21,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:12:21,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:12:21,226 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 23:12:21,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:12:21,244 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 23:12:21,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196582495] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:12:21,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:12:21,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 23:12:21,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344743173] [2023-08-03 23:12:21,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:12:21,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:12:21,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:12:21,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:12:21,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:12:21,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 250 [2023-08-03 23:12:21,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:21,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:12:21,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 250 [2023-08-03 23:12:21,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:12:27,822 INFO L124 PetriNetUnfolderBase]: 59515/79793 cut-off events. [2023-08-03 23:12:27,822 INFO L125 PetriNetUnfolderBase]: For 3744/3744 co-relation queries the response was YES. [2023-08-03 23:12:28,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160143 conditions, 79793 events. 59515/79793 cut-off events. For 3744/3744 co-relation queries the response was YES. Maximal size of possible extension queue 3000. Compared 525867 event pairs, 38349 based on Foata normal form. 3/74594 useless extension candidates. Maximal degree in co-relation 56886. Up to 75373 conditions per place. [2023-08-03 23:12:28,278 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 40 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-08-03 23:12:28,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 56 transitions, 253 flow [2023-08-03 23:12:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:12:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:12:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 571 transitions. [2023-08-03 23:12:28,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571 [2023-08-03 23:12:28,280 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 571 transitions. [2023-08-03 23:12:28,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 571 transitions. [2023-08-03 23:12:28,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:12:28,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 571 transitions. [2023-08-03 23:12:28,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:28,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:28,284 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:28,285 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 160 flow. Second operand 4 states and 571 transitions. [2023-08-03 23:12:28,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 56 transitions, 253 flow [2023-08-03 23:12:28,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 56 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:12:28,287 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 155 flow [2023-08-03 23:12:28,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-08-03 23:12:28,287 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2023-08-03 23:12:28,288 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 155 flow [2023-08-03 23:12:28,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:28,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:12:28,288 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:12:28,301 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 23:12:28,494 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 23:12:28,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:12:28,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:12:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash 550828797, now seen corresponding path program 1 times [2023-08-03 23:12:28,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:12:28,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333672767] [2023-08-03 23:12:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:28,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:12:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:28,585 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 23:12:28,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:12:28,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333672767] [2023-08-03 23:12:28,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333672767] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:12:28,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988526742] [2023-08-03 23:12:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:28,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:12:28,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:12:28,589 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 23:12:28,590 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 23:12:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:28,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:12:28,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:12:28,705 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 23:12:28,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:12:28,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988526742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:12:28,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:12:28,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 23:12:28,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496776330] [2023-08-03 23:12:28,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:12:28,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:12:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:12:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:12:28,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:12:28,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 250 [2023-08-03 23:12:28,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:28,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:12:28,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 250 [2023-08-03 23:12:28,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:12:34,896 INFO L124 PetriNetUnfolderBase]: 59107/78454 cut-off events. [2023-08-03 23:12:34,896 INFO L125 PetriNetUnfolderBase]: For 3454/3454 co-relation queries the response was YES. [2023-08-03 23:12:35,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158157 conditions, 78454 events. 59107/78454 cut-off events. For 3454/3454 co-relation queries the response was YES. Maximal size of possible extension queue 2986. Compared 506219 event pairs, 23332 based on Foata normal form. 144/73630 useless extension candidates. Maximal degree in co-relation 56190. Up to 74007 conditions per place. [2023-08-03 23:12:35,319 INFO L140 encePairwiseOnDemand]: 246/250 looper letters, 55 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-03 23:12:35,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 317 flow [2023-08-03 23:12:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:12:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:12:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2023-08-03 23:12:35,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752 [2023-08-03 23:12:35,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 719 transitions. [2023-08-03 23:12:35,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 719 transitions. [2023-08-03 23:12:35,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:12:35,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 719 transitions. [2023-08-03 23:12:35,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:35,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:35,326 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:35,326 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 155 flow. Second operand 5 states and 719 transitions. [2023-08-03 23:12:35,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 317 flow [2023-08-03 23:12:35,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 310 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 23:12:35,330 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 165 flow [2023-08-03 23:12:35,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2023-08-03 23:12:35,330 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2023-08-03 23:12:35,331 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 165 flow [2023-08-03 23:12:35,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:35,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:12:35,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:12:35,341 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 23:12:35,540 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 23:12:35,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:12:35,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:12:35,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1270235307, now seen corresponding path program 1 times [2023-08-03 23:12:35,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:12:35,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742792606] [2023-08-03 23:12:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:35,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:12:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:12:35,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:12:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742792606] [2023-08-03 23:12:35,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742792606] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:12:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007156625] [2023-08-03 23:12:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:35,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:12:35,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:12:35,600 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 23:12:35,602 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 23:12:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:35,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:12:35,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:12:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:12:35,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:12:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:12:35,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007156625] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:12:35,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:12:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 23:12:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619329319] [2023-08-03 23:12:35,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:12:35,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:12:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:12:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:12:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:12:35,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 250 [2023-08-03 23:12:35,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:35,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:12:35,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 250 [2023-08-03 23:12:35,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:12:41,211 INFO L124 PetriNetUnfolderBase]: 49312/65635 cut-off events. [2023-08-03 23:12:41,211 INFO L125 PetriNetUnfolderBase]: For 3817/3817 co-relation queries the response was YES. [2023-08-03 23:12:41,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132282 conditions, 65635 events. 49312/65635 cut-off events. For 3817/3817 co-relation queries the response was YES. Maximal size of possible extension queue 2752. Compared 422723 event pairs, 36334 based on Foata normal form. 36/61630 useless extension candidates. Maximal degree in co-relation 46886. Up to 61204 conditions per place. [2023-08-03 23:12:41,565 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 51 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-03 23:12:41,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 303 flow [2023-08-03 23:12:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:12:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:12:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 582 transitions. [2023-08-03 23:12:41,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.582 [2023-08-03 23:12:41,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 582 transitions. [2023-08-03 23:12:41,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 582 transitions. [2023-08-03 23:12:41,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:12:41,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 582 transitions. [2023-08-03 23:12:41,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:41,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:41,570 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:41,570 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 165 flow. Second operand 4 states and 582 transitions. [2023-08-03 23:12:41,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 303 flow [2023-08-03 23:12:41,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 298 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 23:12:41,573 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 158 flow [2023-08-03 23:12:41,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=48} [2023-08-03 23:12:41,574 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 11 predicate places. [2023-08-03 23:12:41,574 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 158 flow [2023-08-03 23:12:41,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:41,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:12:41,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:12:41,581 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 23:12:41,780 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 23:12:41,780 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:12:41,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:12:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1604570027, now seen corresponding path program 1 times [2023-08-03 23:12:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:12:41,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547928957] [2023-08-03 23:12:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:12:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:12:41,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:12:41,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547928957] [2023-08-03 23:12:41,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547928957] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:12:41,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555248285] [2023-08-03 23:12:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:41,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:12:41,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:12:41,849 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 23:12:41,851 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 23:12:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:41,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:12:41,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:12:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:12:41,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:12:41,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555248285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:12:41,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:12:41,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:12:41,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882660265] [2023-08-03 23:12:41,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:12:41,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 23:12:41,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:12:41,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 23:12:41,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:12:41,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 250 [2023-08-03 23:12:41,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 48 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:41,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:12:41,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 250 [2023-08-03 23:12:41,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:12:44,814 INFO L124 PetriNetUnfolderBase]: 25984/35710 cut-off events. [2023-08-03 23:12:44,815 INFO L125 PetriNetUnfolderBase]: For 2458/2458 co-relation queries the response was YES. [2023-08-03 23:12:44,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73161 conditions, 35710 events. 25984/35710 cut-off events. For 2458/2458 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 224756 event pairs, 952 based on Foata normal form. 5184/38545 useless extension candidates. Maximal degree in co-relation 26027. Up to 28224 conditions per place. [2023-08-03 23:12:44,925 INFO L140 encePairwiseOnDemand]: 248/250 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2023-08-03 23:12:44,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 326 flow [2023-08-03 23:12:44,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:12:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:12:44,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-08-03 23:12:44,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592 [2023-08-03 23:12:44,928 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-08-03 23:12:44,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-08-03 23:12:44,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:12:44,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-08-03 23:12:44,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:44,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:44,931 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:44,931 INFO L175 Difference]: Start difference. First operand has 72 places, 48 transitions, 158 flow. Second operand 4 states and 592 transitions. [2023-08-03 23:12:44,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 326 flow [2023-08-03 23:12:45,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 319 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 23:12:45,069 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2023-08-03 23:12:45,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2023-08-03 23:12:45,070 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2023-08-03 23:12:45,070 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2023-08-03 23:12:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:45,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 23:12:45,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 23:12:45,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 23:12:45,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 23:12:45,278 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 23:12:45,279 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:12:45,279 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-03 23:12:45,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 160 transitions, 356 flow [2023-08-03 23:12:45,369 INFO L124 PetriNetUnfolderBase]: 93/1419 cut-off events. [2023-08-03 23:12:45,370 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:12:45,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 1419 events. 93/1419 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9870 event pairs, 0 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1024. Up to 54 conditions per place. [2023-08-03 23:12:45,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 160 transitions, 356 flow [2023-08-03 23:12:45,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 158 transitions, 344 flow [2023-08-03 23:12:45,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:12:45,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 158 transitions, 344 flow [2023-08-03 23:12:45,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 158 transitions, 344 flow [2023-08-03 23:12:45,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 158 transitions, 344 flow [2023-08-03 23:12:45,587 INFO L124 PetriNetUnfolderBase]: 93/1415 cut-off events. [2023-08-03 23:12:45,587 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-03 23:12:45,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 1415 events. 93/1415 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9866 event pairs, 0 based on Foata normal form. 0/1238 useless extension candidates. Maximal degree in co-relation 1012. Up to 54 conditions per place. [2023-08-03 23:12:45,603 INFO L119 LiptonReduction]: Number of co-enabled transitions 6588 [2023-08-03 23:12:48,788 INFO L134 LiptonReduction]: Checked pairs total: 21751 [2023-08-03 23:12:48,788 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-03 23:12:48,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 23:12:48,790 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;@4b2ed6a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:12:48,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:12:48,793 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:12:48,793 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2023-08-03 23:12:48,793 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 23:12:48,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:12:48,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 23:12:48,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:12:48,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:12:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1658024367, now seen corresponding path program 1 times [2023-08-03 23:12:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:12:48,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590284546] [2023-08-03 23:12:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:12:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:12:48,818 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 23:12:48,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:12:48,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590284546] [2023-08-03 23:12:48,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590284546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:12:48,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:12:48,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:12:48,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964291767] [2023-08-03 23:12:48,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:12:48,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:12:48,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:12:48,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:12:48,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:12:48,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 279 [2023-08-03 23:12:48,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:12:48,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:12:48,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 279 [2023-08-03 23:12:48,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:13:28,599 INFO L124 PetriNetUnfolderBase]: 378842/495063 cut-off events. [2023-08-03 23:13:28,599 INFO L125 PetriNetUnfolderBase]: For 5709/5709 co-relation queries the response was YES. [2023-08-03 23:13:29,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979226 conditions, 495063 events. 378842/495063 cut-off events. For 5709/5709 co-relation queries the response was YES. Maximal size of possible extension queue 14843. Compared 3546784 event pairs, 313476 based on Foata normal form. 10836/441639 useless extension candidates. Maximal degree in co-relation 282825. Up to 476892 conditions per place. [2023-08-03 23:13:31,928 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 43 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-03 23:13:31,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 57 transitions, 232 flow [2023-08-03 23:13:31,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:13:31,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:13:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-03 23:13:31,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328554360812425 [2023-08-03 23:13:31,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-03 23:13:31,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-03 23:13:31,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:13:31,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-03 23:13:31,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:13:31,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:13:31,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:13:31,960 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 136 flow. Second operand 3 states and 446 transitions. [2023-08-03 23:13:31,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 57 transitions, 232 flow [2023-08-03 23:13:31,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 57 transitions, 230 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 23:13:31,968 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 144 flow [2023-08-03 23:13:31,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-08-03 23:13:31,985 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-03 23:13:31,986 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 144 flow [2023-08-03 23:13:31,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:13:31,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:13:31,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:13:31,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 23:13:31,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:13:31,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:13:31,987 INFO L85 PathProgramCache]: Analyzing trace with hash -635897737, now seen corresponding path program 1 times [2023-08-03 23:13:31,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:13:31,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575119153] [2023-08-03 23:13:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:13:31,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:13:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:13:32,027 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 23:13:32,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:13:32,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575119153] [2023-08-03 23:13:32,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575119153] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:13:32,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703161786] [2023-08-03 23:13:32,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:13:32,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:13:32,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:13:32,029 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 23:13:32,031 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 23:13:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:13:32,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 23:13:32,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:13:32,146 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 23:13:32,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:13:32,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703161786] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:13:32,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:13:32,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 23:13:32,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892868386] [2023-08-03 23:13:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:13:32,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:13:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:13:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:13:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:13:32,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 279 [2023-08-03 23:13:32,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:13:32,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:13:32,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 279 [2023-08-03 23:13:32,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:14:15,014 INFO L124 PetriNetUnfolderBase]: 366838/478324 cut-off events. [2023-08-03 23:14:15,014 INFO L125 PetriNetUnfolderBase]: For 4155/4155 co-relation queries the response was YES. [2023-08-03 23:14:16,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944801 conditions, 478324 events. 366838/478324 cut-off events. For 4155/4155 co-relation queries the response was YES. Maximal size of possible extension queue 14861. Compared 3432305 event pairs, 296770 based on Foata normal form. 0/418408 useless extension candidates. Maximal degree in co-relation 944764. Up to 460105 conditions per place. [2023-08-03 23:14:17,865 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 49 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-03 23:14:17,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 264 flow [2023-08-03 23:14:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:14:17,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:14:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-03 23:14:17,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5376344086021505 [2023-08-03 23:14:17,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-03 23:14:17,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-03 23:14:17,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:14:17,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-03 23:14:17,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:14:17,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:14:17,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:14:17,869 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 144 flow. Second operand 3 states and 450 transitions. [2023-08-03 23:14:17,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 264 flow [2023-08-03 23:14:17,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:14:17,872 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 154 flow [2023-08-03 23:14:17,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2023-08-03 23:14:17,873 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2023-08-03 23:14:17,873 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 154 flow [2023-08-03 23:14:17,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:14:17,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:14:17,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:14:17,884 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 23:14:18,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:14:18,078 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:14:18,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:14:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1743548339, now seen corresponding path program 1 times [2023-08-03 23:14:18,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:14:18,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46368471] [2023-08-03 23:14:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:14:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:14:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:14:18,114 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 23:14:18,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:14:18,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46368471] [2023-08-03 23:14:18,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46368471] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:14:18,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363012972] [2023-08-03 23:14:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:14:18,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:14:18,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:14:18,116 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 23:14:18,118 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 23:14:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:14:18,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:14:18,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:14:18,226 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 23:14:18,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:14:18,237 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 23:14:18,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363012972] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:14:18,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:14:18,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 23:14:18,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175081193] [2023-08-03 23:14:18,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:14:18,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:14:18,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:14:18,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:14:18,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:14:18,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 279 [2023-08-03 23:14:18,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:14:18,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:14:18,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 279 [2023-08-03 23:14:18,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:14:48,271 INFO L124 PetriNetUnfolderBase]: 286810/370325 cut-off events. [2023-08-03 23:14:48,271 INFO L125 PetriNetUnfolderBase]: For 3519/3519 co-relation queries the response was YES. [2023-08-03 23:14:49,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732286 conditions, 370325 events. 286810/370325 cut-off events. For 3519/3519 co-relation queries the response was YES. Maximal size of possible extension queue 11847. Compared 2523436 event pairs, 193398 based on Foata normal form. 3/325517 useless extension candidates. Maximal degree in co-relation 259645. Up to 356836 conditions per place. [2023-08-03 23:14:50,713 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 47 selfloop transitions, 3 changer transitions 1/63 dead transitions. [2023-08-03 23:14:50,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 272 flow [2023-08-03 23:14:50,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:14:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:14:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 579 transitions. [2023-08-03 23:14:50,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188172043010753 [2023-08-03 23:14:50,717 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 579 transitions. [2023-08-03 23:14:50,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 579 transitions. [2023-08-03 23:14:50,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:14:50,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 579 transitions. [2023-08-03 23:14:50,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.75) internal successors, (579), 4 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 23:14:50,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:14:50,721 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:14:50,721 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 154 flow. Second operand 4 states and 579 transitions. [2023-08-03 23:14:50,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 272 flow [2023-08-03 23:14:50,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 63 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:14:50,724 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 166 flow [2023-08-03 23:14:50,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2023-08-03 23:14:50,726 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2023-08-03 23:14:50,726 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 166 flow [2023-08-03 23:14:50,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:14:50,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:14:50,727 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:14:50,736 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 23:14:50,937 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,SelfDestructingSolverStorable11 [2023-08-03 23:14:50,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:14:50,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:14:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1487468856, now seen corresponding path program 1 times [2023-08-03 23:14:50,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:14:50,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575413133] [2023-08-03 23:14:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:14:50,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:14:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:14:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:14:50,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:14:50,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575413133] [2023-08-03 23:14:50,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575413133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:14:50,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435292546] [2023-08-03 23:14:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:14:50,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:14:50,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:14:50,982 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 23:14:50,985 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 23:14:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:14:51,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:14:51,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:14:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:14:51,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:14:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:14:51,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435292546] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:14:51,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:14:51,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 23:14:51,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586527824] [2023-08-03 23:14:51,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:14:51,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:14:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:14:51,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:14:51,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:14:51,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 279 [2023-08-03 23:14:51,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:14:51,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:14:51,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 279 [2023-08-03 23:14:51,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:15:16,050 INFO L124 PetriNetUnfolderBase]: 238048/305050 cut-off events. [2023-08-03 23:15:16,050 INFO L125 PetriNetUnfolderBase]: For 2673/2673 co-relation queries the response was YES. [2023-08-03 23:15:17,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603409 conditions, 305050 events. 238048/305050 cut-off events. For 2673/2673 co-relation queries the response was YES. Maximal size of possible extension queue 10738. Compared 2036013 event pairs, 153796 based on Foata normal form. 36/269347 useless extension candidates. Maximal degree in co-relation 213592. Up to 292876 conditions per place. [2023-08-03 23:15:18,110 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 58 selfloop transitions, 3 changer transitions 1/74 dead transitions. [2023-08-03 23:15:18,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 328 flow [2023-08-03 23:15:18,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:15:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:15:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2023-08-03 23:15:18,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286738351254481 [2023-08-03 23:15:18,111 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2023-08-03 23:15:18,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2023-08-03 23:15:18,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:15:18,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2023-08-03 23:15:18,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:15:18,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:15:18,114 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:15:18,114 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 166 flow. Second operand 4 states and 590 transitions. [2023-08-03 23:15:18,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 328 flow [2023-08-03 23:15:18,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 321 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 23:15:18,116 INFO L231 Difference]: Finished difference. Result has 77 places, 55 transitions, 173 flow [2023-08-03 23:15:18,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=77, PETRI_TRANSITIONS=55} [2023-08-03 23:15:18,116 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2023-08-03 23:15:18,116 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 55 transitions, 173 flow [2023-08-03 23:15:18,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:15:18,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:15:18,117 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:15:18,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 23:15:18,317 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,SelfDestructingSolverStorable12 [2023-08-03 23:15:18,318 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:15:18,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:15:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1577214773, now seen corresponding path program 1 times [2023-08-03 23:15:18,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:15:18,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795659132] [2023-08-03 23:15:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:15:18,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:15:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:15:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:15:18,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:15:18,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795659132] [2023-08-03 23:15:18,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795659132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:15:18,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:15:18,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 23:15:18,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620648417] [2023-08-03 23:15:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:15:18,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:15:18,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:15:18,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:15:18,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:15:18,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 279 [2023-08-03 23:15:18,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 55 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:15:18,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:15:18,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 279 [2023-08-03 23:15:18,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:15:40,462 INFO L124 PetriNetUnfolderBase]: 214312/276130 cut-off events. [2023-08-03 23:15:40,462 INFO L125 PetriNetUnfolderBase]: For 3637/3637 co-relation queries the response was YES. [2023-08-03 23:15:41,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544929 conditions, 276130 events. 214312/276130 cut-off events. For 3637/3637 co-relation queries the response was YES. Maximal size of possible extension queue 9948. Compared 1825726 event pairs, 34888 based on Foata normal form. 0/248806 useless extension candidates. Maximal degree in co-relation 192915. Up to 249409 conditions per place. [2023-08-03 23:15:42,237 INFO L140 encePairwiseOnDemand]: 274/279 looper letters, 61 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2023-08-03 23:15:42,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 348 flow [2023-08-03 23:15:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:15:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:15:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-08-03 23:15:42,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5639187574671446 [2023-08-03 23:15:42,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-08-03 23:15:42,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-08-03 23:15:42,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:15:42,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-08-03 23:15:42,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:15:42,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:15:42,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:15:42,242 INFO L175 Difference]: Start difference. First operand has 77 places, 55 transitions, 173 flow. Second operand 3 states and 472 transitions. [2023-08-03 23:15:42,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 348 flow [2023-08-03 23:15:42,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 341 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 23:15:42,245 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 187 flow [2023-08-03 23:15:42,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2023-08-03 23:15:42,245 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2023-08-03 23:15:42,246 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 187 flow [2023-08-03 23:15:42,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:15:42,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:15:42,246 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:15:42,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 23:15:42,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:15:42,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:15:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1649891303, now seen corresponding path program 1 times [2023-08-03 23:15:42,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:15:42,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425717717] [2023-08-03 23:15:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:15:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:15:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:15:42,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:15:42,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:15:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425717717] [2023-08-03 23:15:42,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425717717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:15:42,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:15:42,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 23:15:42,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877450115] [2023-08-03 23:15:42,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:15:42,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:15:42,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:15:42,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:15:42,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:15:42,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 279 [2023-08-03 23:15:42,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:15:42,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:15:42,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 279 [2023-08-03 23:15:42,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:16:07,215 INFO L124 PetriNetUnfolderBase]: 211864/270262 cut-off events. [2023-08-03 23:16:07,215 INFO L125 PetriNetUnfolderBase]: For 14128/14128 co-relation queries the response was YES. [2023-08-03 23:16:08,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564541 conditions, 270262 events. 211864/270262 cut-off events. For 14128/14128 co-relation queries the response was YES. Maximal size of possible extension queue 9775. Compared 1742222 event pairs, 174592 based on Foata normal form. 0/241993 useless extension candidates. Maximal degree in co-relation 199260. Up to 257980 conditions per place. [2023-08-03 23:16:09,190 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 59 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-03 23:16:09,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 344 flow [2023-08-03 23:16:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:16:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:16:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-08-03 23:16:09,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471923536439666 [2023-08-03 23:16:09,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-08-03 23:16:09,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-08-03 23:16:09,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:16:09,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-08-03 23:16:09,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:16:09,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:16:09,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:16:09,193 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 187 flow. Second operand 3 states and 458 transitions. [2023-08-03 23:16:09,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 344 flow [2023-08-03 23:16:09,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 73 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:16:09,198 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 198 flow [2023-08-03 23:16:09,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2023-08-03 23:16:09,199 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2023-08-03 23:16:09,199 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 198 flow [2023-08-03 23:16:09,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:16:09,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:16:09,199 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:16:09,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 23:16:09,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:16:09,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:16:09,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2146104345, now seen corresponding path program 1 times [2023-08-03 23:16:09,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:16:09,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803358145] [2023-08-03 23:16:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:16:09,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:16:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:16:09,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:16:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:16:09,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:16:09,240 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:16:09,241 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 23:16:09,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 23:16:09,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 23:16:09,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 23:16:09,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-03 23:16:09,241 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:16:09,242 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-03 23:16:09,244 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 23:16:09,244 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 23:16:09,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 11:16:09 BasicIcfg [2023-08-03 23:16:09,312 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 23:16:09,312 INFO L158 Benchmark]: Toolchain (without parser) took 267335.62ms. Allocated memory was 335.5MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 292.8MB in the beginning and 13.3GB in the end (delta: -13.0GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. [2023-08-03 23:16:09,312 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 335.5MB. Free memory is still 283.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 23:16:09,312 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.05ms. Allocated memory is still 335.5MB. Free memory was 292.6MB in the beginning and 268.5MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-03 23:16:09,313 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.24ms. Allocated memory is still 335.5MB. Free memory was 268.5MB in the beginning and 265.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 23:16:09,313 INFO L158 Benchmark]: Boogie Preprocessor took 32.25ms. Allocated memory is still 335.5MB. Free memory was 265.7MB in the beginning and 263.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 23:16:09,313 INFO L158 Benchmark]: RCFGBuilder took 535.49ms. Allocated memory was 335.5MB in the beginning and 467.7MB in the end (delta: 132.1MB). Free memory was 263.3MB in the beginning and 422.2MB in the end (delta: -159.0MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. [2023-08-03 23:16:09,313 INFO L158 Benchmark]: TraceAbstraction took 266246.63ms. Allocated memory was 467.7MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 421.2MB in the beginning and 13.3GB in the end (delta: -12.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. [2023-08-03 23:16:09,314 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 335.5MB. Free memory is still 283.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 465.05ms. Allocated memory is still 335.5MB. Free memory was 292.6MB in the beginning and 268.5MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.24ms. Allocated memory is still 335.5MB. Free memory was 268.5MB in the beginning and 265.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.25ms. Allocated memory is still 335.5MB. Free memory was 265.7MB in the beginning and 263.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 535.49ms. Allocated memory was 335.5MB in the beginning and 467.7MB in the end (delta: 132.1MB). Free memory was 263.3MB in the beginning and 422.2MB in the end (delta: -159.0MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. * TraceAbstraction took 266246.63ms. Allocated memory was 467.7MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 421.2MB in the beginning and 13.3GB in the end (delta: -12.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 110 PlacesBefore, 33 PlacesAfterwards, 105 TransitionsBefore, 26 TransitionsAfterwards, 1408 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 3082 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1928, independent: 1806, independent conditional: 0, independent unconditional: 1806, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 734, independent: 717, independent conditional: 0, independent unconditional: 717, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1928, independent: 1089, independent conditional: 0, independent unconditional: 1089, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 734, unknown conditional: 0, unknown unconditional: 734] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 142 PlacesBefore, 61 PlacesAfterwards, 131 TransitionsBefore, 48 TransitionsAfterwards, 4000 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 90 TotalNumberOfCompositions, 14891 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7134, independent: 6817, independent conditional: 0, independent unconditional: 6817, dependent: 317, dependent conditional: 0, dependent unconditional: 317, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1961, independent: 1924, independent conditional: 0, independent unconditional: 1924, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7134, independent: 4893, independent conditional: 0, independent unconditional: 4893, dependent: 280, dependent conditional: 0, dependent unconditional: 280, unknown: 1961, unknown conditional: 0, unknown unconditional: 1961] , Statistics on independence cache: Total cache size (in pairs): 392, Positive cache size: 371, Positive conditional cache size: 0, Positive unconditional cache size: 371, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 166 PlacesBefore, 66 PlacesAfterwards, 158 TransitionsBefore, 54 TransitionsAfterwards, 6588 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 4 ChoiceCompositions, 119 TotalNumberOfCompositions, 21751 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8469, independent: 8102, independent conditional: 0, independent unconditional: 8102, dependent: 367, dependent conditional: 0, dependent unconditional: 367, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3301, independent: 3236, independent conditional: 0, independent unconditional: 3236, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8469, independent: 4866, independent conditional: 0, independent unconditional: 4866, dependent: 302, dependent conditional: 0, dependent unconditional: 302, unknown: 3301, unknown conditional: 0, unknown unconditional: 3301] , Statistics on independence cache: Total cache size (in pairs): 428, Positive cache size: 398, Positive conditional cache size: 0, Positive unconditional cache size: 398, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L717] 0 int __unbuffered_p2_EAX = 0; [L719] 0 int __unbuffered_p2_EBX = 0; [L721] 0 int a = 0; [L722] 0 _Bool main$tmp_guard0; [L723] 0 _Bool main$tmp_guard1; [L725] 0 int x = 0; [L727] 0 int y = 0; [L729] 0 int z = 0; [L730] 0 _Bool z$flush_delayed; [L731] 0 int z$mem_tmp; [L732] 0 _Bool z$r_buff0_thd0; [L733] 0 _Bool z$r_buff0_thd1; [L734] 0 _Bool z$r_buff0_thd2; [L735] 0 _Bool z$r_buff0_thd3; [L736] 0 _Bool z$r_buff1_thd0; [L737] 0 _Bool z$r_buff1_thd1; [L738] 0 _Bool z$r_buff1_thd2; [L739] 0 _Bool z$r_buff1_thd3; [L740] 0 _Bool z$read_delayed; [L741] 0 int *z$read_delayed_var; [L742] 0 int z$w_buff0; [L743] 0 _Bool z$w_buff0_used; [L744] 0 int z$w_buff1; [L745] 0 _Bool z$w_buff1_used; [L746] 0 _Bool weak$$choice0; [L747] 0 _Bool weak$$choice2; [L853] 0 pthread_t t260[2]; [L854] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L854] COND TRUE 0 asdf<2 [L854] FCALL, FORK 0 pthread_create(&t260[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t260[asdf], ((void *)0), P0, ((void *)0))=-5, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L854] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L854] COND TRUE 0 asdf<2 [L854] FCALL, FORK 0 pthread_create(&t260[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t260[asdf], ((void *)0), P0, ((void *)0))=-4, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L854] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L854] COND FALSE 0 !(asdf<2) [L855] 0 pthread_t t261[2]; [L856] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L856] COND TRUE 0 asdf<2 [L856] FCALL, FORK 0 pthread_create(&t261[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t261[asdf], ((void *)0), P1, ((void *)0))=-3, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L856] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L856] COND TRUE 0 asdf<2 [L856] FCALL, FORK 0 pthread_create(&t261[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t261[asdf], ((void *)0), P1, ((void *)0))=-2, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L856] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L856] COND FALSE 0 !(asdf<2) [L857] 0 pthread_t t262[2]; [L858] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L858] COND TRUE 0 asdf<2 [L858] FCALL, FORK 0 pthread_create(&t262[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t262[asdf], ((void *)0), P2, ((void *)0))=-1, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L800] 5 z$w_buff1 = z$w_buff0 [L801] 5 z$w_buff0 = 1 [L802] 5 z$w_buff1_used = z$w_buff0_used [L803] 5 z$w_buff0_used = (_Bool)1 [L804] CALL 5 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 5 !(!expression) [L804] RET 5 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L805] 5 z$r_buff1_thd0 = z$r_buff0_thd0 [L806] 5 z$r_buff1_thd1 = z$r_buff0_thd1 [L807] 5 z$r_buff1_thd2 = z$r_buff0_thd2 [L808] 5 z$r_buff1_thd3 = z$r_buff0_thd3 [L809] 5 z$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L858] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L858] COND TRUE 0 asdf<2 [L858] FCALL, FORK 0 pthread_create(&t262[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t262[asdf], ((void *)0), P2, ((void *)0))=0, t260={5:0}, t261={6:0}, t262={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L800] 6 z$w_buff1 = z$w_buff0 [L801] 6 z$w_buff0 = 1 [L802] 6 z$w_buff1_used = z$w_buff0_used [L803] 6 z$w_buff0_used = (_Bool)1 [L804] CALL 6 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND TRUE 6 !expression [L18] 6 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=1, z$w_buff1_used=1, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 7 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 10 procedures, 182 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 58.2s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 52.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 294 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 228 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 763 IncrementalHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 16 mSDtfsCounter, 763 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=5, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1167 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 138/158 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 10 procedures, 182 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 204.0s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 199.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 610 IncrementalHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 24 mSDtfsCounter, 610 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=6, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 585 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 46/53 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 23:16:09,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...