/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe027_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:46:51,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:46:51,321 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:46:51,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:46:51,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:46:51,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:46:51,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:46:51,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:46:51,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:46:51,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:46:51,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:46:51,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:46:51,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:46:51,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:46:51,369 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:46:51,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:46:51,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:46:51,370 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:46:51,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:46:51,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:46:51,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:46:51,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:46:51,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:46:51,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:46:51,371 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:46:51,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:46:51,372 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:46:51,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:46:51,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:46:51,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:46:51,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:46:51,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:46:51,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:46:51,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:46:51,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:46:51,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:46:51,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:46:51,374 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:46:51,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:46:51,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:46:51,375 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:46:51,375 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:46:51,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:46:51,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:46:51,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:46:51,630 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:46:51,631 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:46:51,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe027_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:46:52,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:46:53,026 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:46:53,026 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe027_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:46:53,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63ab6cee1/5f8a97f0ba3c4ec78c40d0f4e0cb421d/FLAG1d43a818a [2023-08-03 18:46:53,052 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63ab6cee1/5f8a97f0ba3c4ec78c40d0f4e0cb421d [2023-08-03 18:46:53,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:46:53,056 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:46:53,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:46:53,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:46:53,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:46:53,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0fac2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53, skipping insertion in model container [2023-08-03 18:46:53,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,094 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:46:53,223 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_safe027_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-03 18:46:53,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:46:53,382 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:46:53,394 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_safe027_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-03 18:46:53,412 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:46:53,414 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:46:53,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:46:53,489 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:46:53,489 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:46:53,495 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:46:53,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53 WrapperNode [2023-08-03 18:46:53,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:46:53,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:46:53,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:46:53,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:46:53,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,542 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2023-08-03 18:46:53,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:46:53,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:46:53,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:46:53,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:46:53,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:46:53,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:46:53,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:46:53,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:46:53,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (1/1) ... [2023-08-03 18:46:53,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:46:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:53,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 18:46:53,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 18:46:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:46:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:46:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:46:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:46:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:46:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:46:53,653 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:46:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:46:53,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:46:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:46:53,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:46:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 18:46:53,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 18:46:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:46:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:46:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:46:53,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:46:53,656 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 18:46:53,764 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:46:53,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:46:53,938 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:46:53,944 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:46:53,945 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 18:46:53,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:46:53 BoogieIcfgContainer [2023-08-03 18:46:53,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:46:53,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:46:53,949 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:46:53,952 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:46:53,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:46:53" (1/3) ... [2023-08-03 18:46:53,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6c8170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:46:53, skipping insertion in model container [2023-08-03 18:46:53,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:53" (2/3) ... [2023-08-03 18:46:53,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6c8170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:46:53, skipping insertion in model container [2023-08-03 18:46:53,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:46:53" (3/3) ... [2023-08-03 18:46:53,954 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe027_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:46:53,961 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:46:53,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:46:53,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:46:53,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:46:54,028 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:46:54,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 128 transitions, 276 flow [2023-08-03 18:46:54,266 INFO L124 PetriNetUnfolderBase]: 62/861 cut-off events. [2023-08-03 18:46:54,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:46:54,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 861 events. 62/861 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5285 event pairs, 0 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 514. Up to 32 conditions per place. [2023-08-03 18:46:54,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 128 transitions, 276 flow [2023-08-03 18:46:54,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 114 transitions, 248 flow [2023-08-03 18:46:54,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:46:54,301 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 114 transitions, 248 flow [2023-08-03 18:46:54,310 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 114 transitions, 248 flow [2023-08-03 18:46:54,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 114 transitions, 248 flow [2023-08-03 18:46:54,379 INFO L124 PetriNetUnfolderBase]: 46/637 cut-off events. [2023-08-03 18:46:54,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:46:54,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 637 events. 46/637 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3544 event pairs, 0 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 402. Up to 32 conditions per place. [2023-08-03 18:46:54,390 INFO L119 LiptonReduction]: Number of co-enabled transitions 2526 [2023-08-03 18:46:56,629 INFO L134 LiptonReduction]: Checked pairs total: 3871 [2023-08-03 18:46:56,629 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-03 18:46:56,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:46:56,646 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;@6b373a2b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:46:56,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 18:46:56,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:46:56,650 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-03 18:46:56,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:46:56,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:56,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:46:56,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:46:56,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:56,655 INFO L85 PathProgramCache]: Analyzing trace with hash 425067889, now seen corresponding path program 1 times [2023-08-03 18:46:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:56,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844668815] [2023-08-03 18:46:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:56,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:46:56,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:56,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844668815] [2023-08-03 18:46:56,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844668815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:56,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:46:56,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:46:56,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429071451] [2023-08-03 18:46:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:56,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:46:56,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:56,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:46:56,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:46:56,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 219 [2023-08-03 18:46:56,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:56,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:56,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 219 [2023-08-03 18:46:56,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:57,239 INFO L124 PetriNetUnfolderBase]: 2144/3335 cut-off events. [2023-08-03 18:46:57,239 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-03 18:46:57,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6791 conditions, 3335 events. 2144/3335 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18412 event pairs, 1422 based on Foata normal form. 0/3068 useless extension candidates. Maximal degree in co-relation 6771. Up to 3228 conditions per place. [2023-08-03 18:46:57,263 INFO L140 encePairwiseOnDemand]: 215/219 looper letters, 27 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-03 18:46:57,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 148 flow [2023-08-03 18:46:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:46:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:46:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-08-03 18:46:57,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563165905631659 [2023-08-03 18:46:57,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-08-03 18:46:57,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-08-03 18:46:57,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:57,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-08-03 18:46:57,314 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 18:46:57,319 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 18:46:57,319 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 18:46:57,321 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 86 flow. Second operand 3 states and 370 transitions. [2023-08-03 18:46:57,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 148 flow [2023-08-03 18:46:57,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:46:57,325 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 92 flow [2023-08-03 18:46:57,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-03 18:46:57,329 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-03 18:46:57,329 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 92 flow [2023-08-03 18:46:57,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:57,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:57,330 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:46:57,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:46:57,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:46:57,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:57,331 INFO L85 PathProgramCache]: Analyzing trace with hash 285233137, now seen corresponding path program 1 times [2023-08-03 18:46:57,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:57,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064115640] [2023-08-03 18:46:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:57,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:46:57,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:46:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:46:57,379 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:46:57,379 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:46:57,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 18:46:57,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 18:46:57,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 18:46:57,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 18:46:57,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 18:46:57,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:46:57,383 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:46:57,387 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:46:57,387 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:46:57,415 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:46:57,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 154 transitions, 356 flow [2023-08-03 18:46:57,782 INFO L124 PetriNetUnfolderBase]: 282/4026 cut-off events. [2023-08-03 18:46:57,783 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 18:46:57,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 4026 events. 282/4026 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 38513 event pairs, 0 based on Foata normal form. 0/3543 useless extension candidates. Maximal degree in co-relation 2929. Up to 162 conditions per place. [2023-08-03 18:46:57,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 154 transitions, 356 flow [2023-08-03 18:46:57,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 140 transitions, 328 flow [2023-08-03 18:46:57,815 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:46:57,815 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 140 transitions, 328 flow [2023-08-03 18:46:57,816 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 140 transitions, 328 flow [2023-08-03 18:46:57,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 140 transitions, 328 flow [2023-08-03 18:46:58,081 INFO L124 PetriNetUnfolderBase]: 201/2892 cut-off events. [2023-08-03 18:46:58,082 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 18:46:58,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 2892 events. 201/2892 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 25581 event pairs, 0 based on Foata normal form. 0/2571 useless extension candidates. Maximal degree in co-relation 2173. Up to 162 conditions per place. [2023-08-03 18:46:58,136 INFO L119 LiptonReduction]: Number of co-enabled transitions 6200 [2023-08-03 18:47:00,236 INFO L134 LiptonReduction]: Checked pairs total: 11207 [2023-08-03 18:47:00,237 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-03 18:47:00,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:47:00,240 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;@6b373a2b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:47:00,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 18:47:00,242 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:47:00,242 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-08-03 18:47:00,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:47:00,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:47:00,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:47:00,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:47:00,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:47:00,243 INFO L85 PathProgramCache]: Analyzing trace with hash 691408357, now seen corresponding path program 1 times [2023-08-03 18:47:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:47:00,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064732776] [2023-08-03 18:47:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:47:00,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:47:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:47:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:47:00,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:47:00,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064732776] [2023-08-03 18:47:00,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064732776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:47:00,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:47:00,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:47:00,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628685393] [2023-08-03 18:47:00,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:47:00,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:47:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:47:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:47:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:47:00,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 253 [2023-08-03 18:47:00,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:00,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:47:00,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 253 [2023-08-03 18:47:00,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:47:47,664 INFO L124 PetriNetUnfolderBase]: 576290/738810 cut-off events. [2023-08-03 18:47:47,664 INFO L125 PetriNetUnfolderBase]: For 23844/23844 co-relation queries the response was YES. [2023-08-03 18:47:49,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482841 conditions, 738810 events. 576290/738810 cut-off events. For 23844/23844 co-relation queries the response was YES. Maximal size of possible extension queue 15839. Compared 5022258 event pairs, 485484 based on Foata normal form. 0/702620 useless extension candidates. Maximal degree in co-relation 436851. Up to 712500 conditions per place. [2023-08-03 18:47:52,362 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 40 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-03 18:47:52,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 54 transitions, 240 flow [2023-08-03 18:47:52,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:47:52,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:47:52,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-08-03 18:47:52,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5915678524374176 [2023-08-03 18:47:52,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-08-03 18:47:52,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-08-03 18:47:52,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:47:52,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-08-03 18:47:52,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:52,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:52,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:52,371 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 150 flow. Second operand 3 states and 449 transitions. [2023-08-03 18:47:52,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 54 transitions, 240 flow [2023-08-03 18:47:52,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 54 transitions, 232 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-03 18:47:52,401 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 152 flow [2023-08-03 18:47:52,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-03 18:47:52,402 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-08-03 18:47:52,403 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 152 flow [2023-08-03 18:47:52,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:52,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:47:52,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:47:52,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:47:52,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:47:52,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:47:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash 862028450, now seen corresponding path program 1 times [2023-08-03 18:47:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:47:52,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650618027] [2023-08-03 18:47:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:47:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:47:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:47:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:47:52,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:47:52,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650618027] [2023-08-03 18:47:52,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650618027] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:47:52,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662413403] [2023-08-03 18:47:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:47:52,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:47:52,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:47:52,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:47:52,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 18:47:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:47:52,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:47:52,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:47:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:47:52,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:47:52,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662413403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:47:52,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:47:52,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:47:52,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926555062] [2023-08-03 18:47:52,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:47:52,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:47:52,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:47:52,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:47:52,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:47:52,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 253 [2023-08-03 18:47:52,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 152 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 18:47:52,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:47:52,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 253 [2023-08-03 18:47:52,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:48:39,210 INFO L124 PetriNetUnfolderBase]: 543278/692744 cut-off events. [2023-08-03 18:48:39,211 INFO L125 PetriNetUnfolderBase]: For 17271/17271 co-relation queries the response was YES. [2023-08-03 18:48:41,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390242 conditions, 692744 events. 543278/692744 cut-off events. For 17271/17271 co-relation queries the response was YES. Maximal size of possible extension queue 15720. Compared 4619812 event pairs, 459424 based on Foata normal form. 0/664651 useless extension candidates. Maximal degree in co-relation 1390203. Up to 668923 conditions per place. [2023-08-03 18:48:43,623 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 45 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-03 18:48:43,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 262 flow [2023-08-03 18:48:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:48:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:48:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-03 18:48:43,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5955204216073782 [2023-08-03 18:48:43,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-03 18:48:43,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-03 18:48:43,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:48:43,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-03 18:48:43,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:48:43,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:48:43,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:48:43,630 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 152 flow. Second operand 3 states and 452 transitions. [2023-08-03 18:48:43,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 262 flow [2023-08-03 18:48:43,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:48:43,632 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 162 flow [2023-08-03 18:48:43,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2023-08-03 18:48:43,633 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 5 predicate places. [2023-08-03 18:48:43,633 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 162 flow [2023-08-03 18:48:43,634 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 18:48:43,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:48:43,634 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:48:43,649 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 18:48:43,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:48:43,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:48:43,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:48:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 376628926, now seen corresponding path program 1 times [2023-08-03 18:48:43,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:48:43,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876162697] [2023-08-03 18:48:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:48:43,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:48:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:48:43,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:48:43,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:48:43,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876162697] [2023-08-03 18:48:43,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876162697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:48:43,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184140783] [2023-08-03 18:48:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:48:43,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:48:43,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:48:43,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:48:43,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 18:48:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:48:43,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:48:43,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:48:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:48:44,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:48:44,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184140783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:48:44,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:48:44,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:48:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629092957] [2023-08-03 18:48:44,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:48:44,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:48:44,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:48:44,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:48:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:48:44,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 253 [2023-08-03 18:48:44,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:48:44,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:48:44,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 253 [2023-08-03 18:48:44,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:49:31,036 INFO L124 PetriNetUnfolderBase]: 543266/692703 cut-off events. [2023-08-03 18:49:31,036 INFO L125 PetriNetUnfolderBase]: For 17559/17559 co-relation queries the response was YES. [2023-08-03 18:49:32,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390511 conditions, 692703 events. 543266/692703 cut-off events. For 17559/17559 co-relation queries the response was YES. Maximal size of possible extension queue 15613. Compared 4620162 event pairs, 396552 based on Foata normal form. 9/664763 useless extension candidates. Maximal degree in co-relation 411586. Up to 669001 conditions per place. [2023-08-03 18:49:35,509 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 44 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-08-03 18:49:35,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 59 transitions, 275 flow [2023-08-03 18:49:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:49:35,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:49:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 718 transitions. [2023-08-03 18:49:35,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675889328063242 [2023-08-03 18:49:35,511 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 718 transitions. [2023-08-03 18:49:35,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 718 transitions. [2023-08-03 18:49:35,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:49:35,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 718 transitions. [2023-08-03 18:49:35,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:35,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:35,517 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:35,517 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 162 flow. Second operand 5 states and 718 transitions. [2023-08-03 18:49:35,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 59 transitions, 275 flow [2023-08-03 18:49:35,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 59 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:49:35,520 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 178 flow [2023-08-03 18:49:35,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2023-08-03 18:49:35,521 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2023-08-03 18:49:35,521 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 178 flow [2023-08-03 18:49:35,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:35,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:49:35,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:49:35,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 18:49:35,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:49:35,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:49:35,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:49:35,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1041526724, now seen corresponding path program 1 times [2023-08-03 18:49:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:49:35,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228876634] [2023-08-03 18:49:35,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:49:35,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:49:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:49:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:49:35,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:49:35,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228876634] [2023-08-03 18:49:35,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228876634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:49:35,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373803660] [2023-08-03 18:49:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:49:35,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:49:35,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:49:35,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:49:35,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 18:49:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:49:35,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:49:35,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:49:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 18:49:35,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:49:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373803660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:49:35,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:49:35,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:49:35,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924502701] [2023-08-03 18:49:35,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:49:35,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:49:35,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:49:35,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:49:35,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:49:35,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 253 [2023-08-03 18:49:35,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:49:35,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:49:35,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 253 [2023-08-03 18:49:35,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:50:22,008 INFO L124 PetriNetUnfolderBase]: 512834/645320 cut-off events. [2023-08-03 18:50:22,008 INFO L125 PetriNetUnfolderBase]: For 13849/13849 co-relation queries the response was YES. [2023-08-03 18:50:23,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301470 conditions, 645320 events. 512834/645320 cut-off events. For 13849/13849 co-relation queries the response was YES. Maximal size of possible extension queue 15276. Compared 4160901 event pairs, 434258 based on Foata normal form. 0/620107 useless extension candidates. Maximal degree in co-relation 383888. Up to 626984 conditions per place. [2023-08-03 18:50:26,386 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 51 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-03 18:50:26,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 308 flow [2023-08-03 18:50:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:50:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:50:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 456 transitions. [2023-08-03 18:50:26,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6007905138339921 [2023-08-03 18:50:26,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 456 transitions. [2023-08-03 18:50:26,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 456 transitions. [2023-08-03 18:50:26,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:50:26,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 456 transitions. [2023-08-03 18:50:26,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:26,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:26,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:26,392 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 178 flow. Second operand 3 states and 456 transitions. [2023-08-03 18:50:26,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 308 flow [2023-08-03 18:50:26,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 64 transitions, 301 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 18:50:26,400 INFO L231 Difference]: Finished difference. Result has 76 places, 53 transitions, 183 flow [2023-08-03 18:50:26,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2023-08-03 18:50:26,409 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2023-08-03 18:50:26,409 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 183 flow [2023-08-03 18:50:26,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:26,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:50:26,409 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:50:26,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 18:50:26,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:50:26,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:50:26,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:50:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash -273144314, now seen corresponding path program 1 times [2023-08-03 18:50:26,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:50:26,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369175741] [2023-08-03 18:50:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:50:26,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:50:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:50:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:50:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:50:26,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369175741] [2023-08-03 18:50:26,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369175741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:50:26,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56609146] [2023-08-03 18:50:26,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:50:26,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:50:26,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:50:26,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:50:26,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 18:50:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:50:26,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:50:26,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:50:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:50:26,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:50:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:50:26,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56609146] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:50:26,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:50:26,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:50:26,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475707590] [2023-08-03 18:50:26,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:50:26,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:50:26,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:50:26,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:50:26,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:50:26,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 253 [2023-08-03 18:50:26,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:50:26,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:50:26,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 253 [2023-08-03 18:50:26,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:51:03,199 INFO L124 PetriNetUnfolderBase]: 399196/498755 cut-off events. [2023-08-03 18:51:03,200 INFO L125 PetriNetUnfolderBase]: For 13458/13458 co-relation queries the response was YES. [2023-08-03 18:51:04,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008474 conditions, 498755 events. 399196/498755 cut-off events. For 13458/13458 co-relation queries the response was YES. Maximal size of possible extension queue 12048. Compared 3061132 event pairs, 282654 based on Foata normal form. 3/481144 useless extension candidates. Maximal degree in co-relation 355558. Up to 486586 conditions per place. [2023-08-03 18:51:06,816 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 45 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-03 18:51:06,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 59 transitions, 287 flow [2023-08-03 18:51:06,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:51:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:51:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-08-03 18:51:06,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2023-08-03 18:51:06,819 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-08-03 18:51:06,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-08-03 18:51:06,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:51:06,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-08-03 18:51:06,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:06,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:06,822 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:06,823 INFO L175 Difference]: Start difference. First operand has 76 places, 53 transitions, 183 flow. Second operand 4 states and 583 transitions. [2023-08-03 18:51:06,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 59 transitions, 287 flow [2023-08-03 18:51:06,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 59 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:51:06,827 INFO L231 Difference]: Finished difference. Result has 78 places, 52 transitions, 179 flow [2023-08-03 18:51:06,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=78, PETRI_TRANSITIONS=52} [2023-08-03 18:51:06,828 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 11 predicate places. [2023-08-03 18:51:06,828 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 52 transitions, 179 flow [2023-08-03 18:51:06,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:06,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:51:06,829 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:51:06,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 18:51:07,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:07,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:51:07,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:51:07,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1835636828, now seen corresponding path program 1 times [2023-08-03 18:51:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:51:07,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735762181] [2023-08-03 18:51:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:51:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:51:07,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:51:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735762181] [2023-08-03 18:51:07,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735762181] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:51:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544589698] [2023-08-03 18:51:07,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:07,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:07,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:51:07,105 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:51:07,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 18:51:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:07,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:51:07,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:51:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:51:07,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:51:07,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544589698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:51:07,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:51:07,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:51:07,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848484510] [2023-08-03 18:51:07,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:51:07,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:51:07,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:51:07,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:51:07,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:51:07,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 253 [2023-08-03 18:51:07,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 52 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:07,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:51:07,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 253 [2023-08-03 18:51:07,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:51:41,338 INFO L124 PetriNetUnfolderBase]: 398980/498463 cut-off events. [2023-08-03 18:51:41,338 INFO L125 PetriNetUnfolderBase]: For 12886/12886 co-relation queries the response was YES. [2023-08-03 18:51:43,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007547 conditions, 498463 events. 398980/498463 cut-off events. For 12886/12886 co-relation queries the response was YES. Maximal size of possible extension queue 12017. Compared 3057881 event pairs, 180814 based on Foata normal form. 81/480930 useless extension candidates. Maximal degree in co-relation 355229. Up to 485757 conditions per place. [2023-08-03 18:51:46,208 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 57 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-03 18:51:46,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 71 transitions, 341 flow [2023-08-03 18:51:46,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:51:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:51:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 730 transitions. [2023-08-03 18:51:46,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5770750988142292 [2023-08-03 18:51:46,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 730 transitions. [2023-08-03 18:51:46,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 730 transitions. [2023-08-03 18:51:46,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:51:46,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 730 transitions. [2023-08-03 18:51:46,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:46,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:46,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:46,218 INFO L175 Difference]: Start difference. First operand has 78 places, 52 transitions, 179 flow. Second operand 5 states and 730 transitions. [2023-08-03 18:51:46,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 71 transitions, 341 flow [2023-08-03 18:51:46,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 18:51:46,224 INFO L231 Difference]: Finished difference. Result has 79 places, 52 transitions, 191 flow [2023-08-03 18:51:46,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=79, PETRI_TRANSITIONS=52} [2023-08-03 18:51:46,226 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2023-08-03 18:51:46,226 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 52 transitions, 191 flow [2023-08-03 18:51:46,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:46,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:51:46,236 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:51:46,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 18:51:46,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:46,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:51:46,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:51:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash -785262928, now seen corresponding path program 1 times [2023-08-03 18:51:46,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:51:46,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917167804] [2023-08-03 18:51:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:46,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:51:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:51:46,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:51:46,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917167804] [2023-08-03 18:51:46,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917167804] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:51:46,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722460247] [2023-08-03 18:51:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:51:46,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:51:46,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:51:46,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:51:46,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 18:51:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:51:46,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:51:46,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:51:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:51:46,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:51:46,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722460247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:51:46,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:51:46,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 18:51:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058674211] [2023-08-03 18:51:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:51:46,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:51:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:51:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:51:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:51:46,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 253 [2023-08-03 18:51:46,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 52 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:51:46,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:51:46,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 253 [2023-08-03 18:51:46,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:22,825 INFO L124 PetriNetUnfolderBase]: 389476/486367 cut-off events. [2023-08-03 18:52:22,826 INFO L125 PetriNetUnfolderBase]: For 8110/8110 co-relation queries the response was YES. [2023-08-03 18:52:25,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983712 conditions, 486367 events. 389476/486367 cut-off events. For 8110/8110 co-relation queries the response was YES. Maximal size of possible extension queue 12097. Compared 2952725 event pairs, 316468 based on Foata normal form. 0/470697 useless extension candidates. Maximal degree in co-relation 346709. Up to 443983 conditions per place. [2023-08-03 18:52:27,563 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 56 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-03 18:52:27,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 68 transitions, 339 flow [2023-08-03 18:52:27,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:52:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:52:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-08-03 18:52:27,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2023-08-03 18:52:27,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-08-03 18:52:27,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-08-03 18:52:27,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:27,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-08-03 18:52:27,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:27,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:27,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:27,580 INFO L175 Difference]: Start difference. First operand has 79 places, 52 transitions, 191 flow. Second operand 3 states and 460 transitions. [2023-08-03 18:52:27,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 68 transitions, 339 flow [2023-08-03 18:52:27,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 332 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 18:52:27,588 INFO L231 Difference]: Finished difference. Result has 80 places, 53 transitions, 196 flow [2023-08-03 18:52:27,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=80, PETRI_TRANSITIONS=53} [2023-08-03 18:52:27,590 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2023-08-03 18:52:27,590 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 53 transitions, 196 flow [2023-08-03 18:52:27,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:27,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:27,591 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:27,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 18:52:27,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:27,796 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:52:27,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1161823602, now seen corresponding path program 1 times [2023-08-03 18:52:27,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:27,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135751851] [2023-08-03 18:52:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:27,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 18:52:27,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135751851] [2023-08-03 18:52:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135751851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:52:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339313792] [2023-08-03 18:52:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:27,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:27,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:52:27,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:52:27,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 18:52:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:28,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:52:28,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:52:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 18:52:28,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:52:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 18:52:28,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339313792] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:52:28,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:52:28,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:52:28,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843823088] [2023-08-03 18:52:28,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:52:28,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:52:28,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:28,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:52:28,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:52:28,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 253 [2023-08-03 18:52:28,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 53 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:28,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:28,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 253 [2023-08-03 18:52:28,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:52:54,868 INFO L124 PetriNetUnfolderBase]: 302806/375316 cut-off events. [2023-08-03 18:52:54,868 INFO L125 PetriNetUnfolderBase]: For 32992/32992 co-relation queries the response was YES. [2023-08-03 18:52:57,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786334 conditions, 375316 events. 302806/375316 cut-off events. For 32992/32992 co-relation queries the response was YES. Maximal size of possible extension queue 10037. Compared 2177847 event pairs, 217912 based on Foata normal form. 27/375009 useless extension candidates. Maximal degree in co-relation 276224. Up to 365929 conditions per place. [2023-08-03 18:52:59,145 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 54 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-08-03 18:52:59,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 67 transitions, 334 flow [2023-08-03 18:52:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:52:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:52:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 591 transitions. [2023-08-03 18:52:59,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58399209486166 [2023-08-03 18:52:59,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 591 transitions. [2023-08-03 18:52:59,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 591 transitions. [2023-08-03 18:52:59,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:52:59,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 591 transitions. [2023-08-03 18:52:59,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,180 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,180 INFO L175 Difference]: Start difference. First operand has 80 places, 53 transitions, 196 flow. Second operand 4 states and 591 transitions. [2023-08-03 18:52:59,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 67 transitions, 334 flow [2023-08-03 18:52:59,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 67 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:52:59,394 INFO L231 Difference]: Finished difference. Result has 82 places, 52 transitions, 192 flow [2023-08-03 18:52:59,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=82, PETRI_TRANSITIONS=52} [2023-08-03 18:52:59,396 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2023-08-03 18:52:59,396 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 52 transitions, 192 flow [2023-08-03 18:52:59,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:52:59,397 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:52:59,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 18:52:59,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:59,602 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:52:59,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:52:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash -282004561, now seen corresponding path program 1 times [2023-08-03 18:52:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:52:59,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272674533] [2023-08-03 18:52:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:59,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:52:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:52:59,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:52:59,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272674533] [2023-08-03 18:52:59,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272674533] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:52:59,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030689941] [2023-08-03 18:52:59,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:52:59,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:52:59,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:52:59,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:52:59,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 18:52:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:52:59,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:52:59,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:52:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:52:59,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:52:59,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030689941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:52:59,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:52:59,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:52:59,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312784855] [2023-08-03 18:52:59,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:52:59,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:52:59,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:52:59,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:52:59,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:52:59,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 253 [2023-08-03 18:52:59,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 52 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:52:59,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:52:59,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 253 [2023-08-03 18:52:59,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:53:26,287 INFO L124 PetriNetUnfolderBase]: 299890/370294 cut-off events. [2023-08-03 18:53:26,287 INFO L125 PetriNetUnfolderBase]: For 28603/28603 co-relation queries the response was YES. [2023-08-03 18:53:27,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774625 conditions, 370294 events. 299890/370294 cut-off events. For 28603/28603 co-relation queries the response was YES. Maximal size of possible extension queue 10033. Compared 2128398 event pairs, 60832 based on Foata normal form. 729/370932 useless extension candidates. Maximal degree in co-relation 272159. Up to 355185 conditions per place. [2023-08-03 18:53:28,992 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 70 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-03 18:53:28,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 404 flow [2023-08-03 18:53:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:53:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:53:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-08-03 18:53:28,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865612648221344 [2023-08-03 18:53:28,994 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-08-03 18:53:28,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-08-03 18:53:28,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:53:28,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-08-03 18:53:28,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:28,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:28,997 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:28,997 INFO L175 Difference]: Start difference. First operand has 82 places, 52 transitions, 192 flow. Second operand 5 states and 742 transitions. [2023-08-03 18:53:28,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 404 flow [2023-08-03 18:53:29,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 397 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 18:53:29,149 INFO L231 Difference]: Finished difference. Result has 83 places, 52 transitions, 204 flow [2023-08-03 18:53:29,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=83, PETRI_TRANSITIONS=52} [2023-08-03 18:53:29,150 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2023-08-03 18:53:29,150 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 52 transitions, 204 flow [2023-08-03 18:53:29,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:29,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:53:29,150 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:53:29,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 18:53:29,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-03 18:53:29,351 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:53:29,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:53:29,351 INFO L85 PathProgramCache]: Analyzing trace with hash 178055960, now seen corresponding path program 1 times [2023-08-03 18:53:29,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:53:29,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937673140] [2023-08-03 18:53:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:53:29,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:53:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:53:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:53:29,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:53:29,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937673140] [2023-08-03 18:53:29,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937673140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:53:29,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117277053] [2023-08-03 18:53:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:53:29,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:53:29,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:53:29,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:53:29,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 18:53:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:53:29,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:53:29,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:53:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:53:29,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:53:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:53:29,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117277053] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:53:29,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:53:29,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:53:29,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122990233] [2023-08-03 18:53:29,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:53:29,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:53:29,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:53:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:53:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:53:29,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 253 [2023-08-03 18:53:29,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 52 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:29,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:53:29,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 253 [2023-08-03 18:53:29,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:53:51,745 INFO L124 PetriNetUnfolderBase]: 234604/288241 cut-off events. [2023-08-03 18:53:51,746 INFO L125 PetriNetUnfolderBase]: For 26818/26818 co-relation queries the response was YES. [2023-08-03 18:53:52,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605219 conditions, 288241 events. 234604/288241 cut-off events. For 26818/26818 co-relation queries the response was YES. Maximal size of possible extension queue 9081. Compared 1620201 event pairs, 168238 based on Foata normal form. 243/288393 useless extension candidates. Maximal degree in co-relation 212342. Up to 275692 conditions per place. [2023-08-03 18:53:54,042 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 62 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-08-03 18:53:54,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 74 transitions, 372 flow [2023-08-03 18:53:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:53:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:53:54,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 599 transitions. [2023-08-03 18:53:54,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591897233201581 [2023-08-03 18:53:54,044 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 599 transitions. [2023-08-03 18:53:54,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 599 transitions. [2023-08-03 18:53:54,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:53:54,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 599 transitions. [2023-08-03 18:53:54,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:54,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:54,047 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:54,048 INFO L175 Difference]: Start difference. First operand has 83 places, 52 transitions, 204 flow. Second operand 4 states and 599 transitions. [2023-08-03 18:53:54,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 74 transitions, 372 flow [2023-08-03 18:53:54,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 74 transitions, 367 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:53:54,153 INFO L231 Difference]: Finished difference. Result has 84 places, 51 transitions, 195 flow [2023-08-03 18:53:54,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=84, PETRI_TRANSITIONS=51} [2023-08-03 18:53:54,153 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2023-08-03 18:53:54,153 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 51 transitions, 195 flow [2023-08-03 18:53:54,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:54,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:53:54,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:53:54,158 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 18:53:54,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:53:54,358 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:53:54,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:53:54,359 INFO L85 PathProgramCache]: Analyzing trace with hash 419877837, now seen corresponding path program 1 times [2023-08-03 18:53:54,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:53:54,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371765420] [2023-08-03 18:53:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:53:54,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:53:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:53:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:53:54,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:53:54,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371765420] [2023-08-03 18:53:54,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371765420] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:53:54,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471366316] [2023-08-03 18:53:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:53:54,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:53:54,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:53:54,421 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:53:54,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 18:53:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:53:54,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:53:54,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:53:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:53:54,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:53:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:53:54,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471366316] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:53:54,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:53:54,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:53:54,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530415066] [2023-08-03 18:53:54,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:53:54,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:53:54,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:53:54,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:53:54,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:53:54,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 253 [2023-08-03 18:53:54,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 51 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:53:54,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:53:54,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 253 [2023-08-03 18:53:54,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:54:12,026 INFO L124 PetriNetUnfolderBase]: 214192/263860 cut-off events. [2023-08-03 18:54:12,026 INFO L125 PetriNetUnfolderBase]: For 21310/21310 co-relation queries the response was YES. [2023-08-03 18:54:12,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554108 conditions, 263860 events. 214192/263860 cut-off events. For 21310/21310 co-relation queries the response was YES. Maximal size of possible extension queue 8532. Compared 1446281 event pairs, 91720 based on Foata normal form. 2187/265956 useless extension candidates. Maximal degree in co-relation 194333. Up to 135913 conditions per place. [2023-08-03 18:54:14,098 INFO L140 encePairwiseOnDemand]: 249/253 looper letters, 70 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-03 18:54:14,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 407 flow [2023-08-03 18:54:14,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:54:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:54:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 608 transitions. [2023-08-03 18:54:14,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6007905138339921 [2023-08-03 18:54:14,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 608 transitions. [2023-08-03 18:54:14,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 608 transitions. [2023-08-03 18:54:14,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:54:14,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 608 transitions. [2023-08-03 18:54:14,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:54:14,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:54:14,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:54:14,103 INFO L175 Difference]: Start difference. First operand has 84 places, 51 transitions, 195 flow. Second operand 4 states and 608 transitions. [2023-08-03 18:54:14,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 407 flow [2023-08-03 18:54:14,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 401 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:54:14,156 INFO L231 Difference]: Finished difference. Result has 86 places, 52 transitions, 209 flow [2023-08-03 18:54:14,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=86, PETRI_TRANSITIONS=52} [2023-08-03 18:54:14,156 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2023-08-03 18:54:14,156 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 52 transitions, 209 flow [2023-08-03 18:54:14,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:54:14,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:54:14,157 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:54:14,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 18:54:14,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 18:54:14,360 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:54:14,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:54:14,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1557836629, now seen corresponding path program 1 times [2023-08-03 18:54:14,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:54:14,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539189021] [2023-08-03 18:54:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:54:14,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:54:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:54:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:54:14,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:54:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539189021] [2023-08-03 18:54:14,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539189021] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:54:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224484970] [2023-08-03 18:54:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:54:14,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:54:14,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:54:14,454 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:54:14,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 18:54:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:54:14,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:54:14,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:54:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:54:14,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:54:14,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224484970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:54:14,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:54:14,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:54:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163803576] [2023-08-03 18:54:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:54:14,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:54:14,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:54:14,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:54:14,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:54:14,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 253 [2023-08-03 18:54:14,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 52 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 138.6) internal successors, (693), 5 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:54:14,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:54:14,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 253 [2023-08-03 18:54:14,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:54:29,178 INFO L124 PetriNetUnfolderBase]: 179200/220120 cut-off events. [2023-08-03 18:54:29,179 INFO L125 PetriNetUnfolderBase]: For 64294/64294 co-relation queries the response was YES. [2023-08-03 18:54:30,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491820 conditions, 220120 events. 179200/220120 cut-off events. For 64294/64294 co-relation queries the response was YES. Maximal size of possible extension queue 6644. Compared 1159056 event pairs, 8614 based on Foata normal form. 6561/226590 useless extension candidates. Maximal degree in co-relation 172112. Up to 124659 conditions per place. [2023-08-03 18:54:31,060 INFO L140 encePairwiseOnDemand]: 250/253 looper letters, 82 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-08-03 18:54:31,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 457 flow [2023-08-03 18:54:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:54:31,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:54:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 753 transitions. [2023-08-03 18:54:31,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952569169960474 [2023-08-03 18:54:31,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 753 transitions. [2023-08-03 18:54:31,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 753 transitions. [2023-08-03 18:54:31,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:54:31,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 753 transitions. [2023-08-03 18:54:31,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:54:31,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:54:31,065 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:54:31,065 INFO L175 Difference]: Start difference. First operand has 86 places, 52 transitions, 209 flow. Second operand 5 states and 753 transitions. [2023-08-03 18:54:31,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 457 flow [2023-08-03 18:54:32,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 450 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 18:54:32,339 INFO L231 Difference]: Finished difference. Result has 86 places, 50 transitions, 198 flow [2023-08-03 18:54:32,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=86, PETRI_TRANSITIONS=50} [2023-08-03 18:54:32,339 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2023-08-03 18:54:32,339 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 50 transitions, 198 flow [2023-08-03 18:54:32,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.6) internal successors, (693), 5 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:54:32,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:54:32,340 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:54:32,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 18:54:32,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 18:54:32,541 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:54:32,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:54:32,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1557835821, now seen corresponding path program 1 times [2023-08-03 18:54:32,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:54:32,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755517610] [2023-08-03 18:54:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:54:32,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:54:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:54:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 18:54:32,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:54:32,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755517610] [2023-08-03 18:54:32,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755517610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:54:32,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:54:32,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:54:32,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320110638] [2023-08-03 18:54:32,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:54:32,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:54:32,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:54:32,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:54:32,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:54:32,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 253 [2023-08-03 18:54:32,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 50 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:54:32,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:54:32,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 253 [2023-08-03 18:54:32,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:55:22,907 INFO L124 PetriNetUnfolderBase]: 600598/725914 cut-off events. [2023-08-03 18:55:22,907 INFO L125 PetriNetUnfolderBase]: For 246202/246202 co-relation queries the response was YES. [2023-08-03 18:55:25,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601291 conditions, 725914 events. 600598/725914 cut-off events. For 246202/246202 co-relation queries the response was YES. Maximal size of possible extension queue 14316. Compared 3748128 event pairs, 553674 based on Foata normal form. 81/725994 useless extension candidates. Maximal degree in co-relation 1601196. Up to 714631 conditions per place. [2023-08-03 18:55:28,307 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 76 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2023-08-03 18:55:28,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 85 transitions, 523 flow [2023-08-03 18:55:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:55:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:55:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-03 18:55:28,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5994729907773386 [2023-08-03 18:55:28,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-03 18:55:28,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-03 18:55:28,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:55:28,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-03 18:55:28,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:55:28,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:55:28,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:55:28,311 INFO L175 Difference]: Start difference. First operand has 86 places, 50 transitions, 198 flow. Second operand 3 states and 455 transitions. [2023-08-03 18:55:28,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 85 transitions, 523 flow [2023-08-03 18:55:32,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 513 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:55:32,670 INFO L231 Difference]: Finished difference. Result has 86 places, 54 transitions, 226 flow [2023-08-03 18:55:32,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=86, PETRI_TRANSITIONS=54} [2023-08-03 18:55:32,671 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2023-08-03 18:55:32,671 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 54 transitions, 226 flow [2023-08-03 18:55:32,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:55:32,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:55:32,671 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:55:32,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 18:55:32,671 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:55:32,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:55:32,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1052902302, now seen corresponding path program 1 times [2023-08-03 18:55:32,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:55:32,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769397271] [2023-08-03 18:55:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:55:32,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:55:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:55:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 18:55:32,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:55:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769397271] [2023-08-03 18:55:32,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769397271] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:55:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067966008] [2023-08-03 18:55:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:55:32,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:55:32,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:55:32,870 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:55:32,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 18:55:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:55:32,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 18:55:32,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:55:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 18:55:33,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:55:33,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067966008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:55:33,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:55:33,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-03 18:55:33,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062454622] [2023-08-03 18:55:33,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:55:33,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:55:33,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:55:33,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:55:33,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:55:33,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 253 [2023-08-03 18:55:33,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 54 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:55:33,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:55:33,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 253 [2023-08-03 18:55:33,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:55:48,173 INFO L124 PetriNetUnfolderBase]: 174692/211391 cut-off events. [2023-08-03 18:55:48,174 INFO L125 PetriNetUnfolderBase]: For 98940/98940 co-relation queries the response was YES. [2023-08-03 18:55:49,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525373 conditions, 211391 events. 174692/211391 cut-off events. For 98940/98940 co-relation queries the response was YES. Maximal size of possible extension queue 6226. Compared 1067189 event pairs, 43432 based on Foata normal form. 256/211554 useless extension candidates. Maximal degree in co-relation 335524. Up to 205330 conditions per place. [2023-08-03 18:55:49,947 INFO L140 encePairwiseOnDemand]: 243/253 looper letters, 79 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2023-08-03 18:55:49,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 590 flow [2023-08-03 18:55:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:55:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:55:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-03 18:55:49,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6100131752305665 [2023-08-03 18:55:49,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-03 18:55:49,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-03 18:55:49,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:55:49,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-03 18:55:49,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:55:49,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:55:49,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:55:49,951 INFO L175 Difference]: Start difference. First operand has 86 places, 54 transitions, 226 flow. Second operand 3 states and 463 transitions. [2023-08-03 18:55:49,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 590 flow [2023-08-03 18:55:50,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 96 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:55:50,002 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 282 flow [2023-08-03 18:55:50,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2023-08-03 18:55:50,003 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2023-08-03 18:55:50,003 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 282 flow [2023-08-03 18:55:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:55:50,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:55:50,003 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:55:50,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 18:55:50,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 18:55:50,208 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:55:50,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:55:50,209 INFO L85 PathProgramCache]: Analyzing trace with hash -437903418, now seen corresponding path program 1 times [2023-08-03 18:55:50,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:55:50,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990747011] [2023-08-03 18:55:50,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:55:50,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:55:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:55:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 18:55:50,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:55:50,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990747011] [2023-08-03 18:55:50,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990747011] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:55:50,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726968782] [2023-08-03 18:55:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:55:50,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:55:50,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:55:50,363 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:55:50,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 18:55:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:55:50,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 18:55:50,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:55:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 18:55:50,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:55:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 18:55:50,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726968782] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:55:50,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:55:50,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 7 [2023-08-03 18:55:50,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478879925] [2023-08-03 18:55:50,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:55:50,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 18:55:50,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:55:50,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 18:55:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-03 18:55:50,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 253 [2023-08-03 18:55:50,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 127.25) internal successors, (1018), 8 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:55:50,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:55:50,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 253 [2023-08-03 18:55:50,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:56:23,376 INFO L124 PetriNetUnfolderBase]: 392786/474243 cut-off events. [2023-08-03 18:56:23,376 INFO L125 PetriNetUnfolderBase]: For 311886/311886 co-relation queries the response was YES. [2023-08-03 18:56:25,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335605 conditions, 474243 events. 392786/474243 cut-off events. For 311886/311886 co-relation queries the response was YES. Maximal size of possible extension queue 10256. Compared 2444132 event pairs, 11691 based on Foata normal form. 15839/489821 useless extension candidates. Maximal degree in co-relation 662759. Up to 171480 conditions per place. [2023-08-03 18:56:27,022 INFO L140 encePairwiseOnDemand]: 240/253 looper letters, 270 selfloop transitions, 77 changer transitions 0/351 dead transitions. [2023-08-03 18:56:27,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 351 transitions, 2238 flow [2023-08-03 18:56:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 18:56:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 18:56:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1606 transitions. [2023-08-03 18:56:27,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5770750988142292 [2023-08-03 18:56:27,025 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1606 transitions. [2023-08-03 18:56:27,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1606 transitions. [2023-08-03 18:56:27,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:56:27,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1606 transitions. [2023-08-03 18:56:27,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.0) internal successors, (1606), 11 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:56:27,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:56:27,033 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:56:27,033 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 282 flow. Second operand 11 states and 1606 transitions. [2023-08-03 18:56:27,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 351 transitions, 2238 flow [2023-08-03 18:56:27,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 351 transitions, 2223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:56:27,248 INFO L231 Difference]: Finished difference. Result has 105 places, 134 transitions, 906 flow [2023-08-03 18:56:27,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=906, PETRI_PLACES=105, PETRI_TRANSITIONS=134} [2023-08-03 18:56:27,249 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 38 predicate places. [2023-08-03 18:56:27,249 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 134 transitions, 906 flow [2023-08-03 18:56:27,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 127.25) internal successors, (1018), 8 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:56:27,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:56:27,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:56:27,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 18:56:27,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 18:56:27,451 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:56:27,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:56:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1764730010, now seen corresponding path program 1 times [2023-08-03 18:56:27,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:56:27,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971269830] [2023-08-03 18:56:27,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:56:27,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:56:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:56:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 18:56:27,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:56:27,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971269830] [2023-08-03 18:56:27,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971269830] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:56:27,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922735410] [2023-08-03 18:56:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:56:27,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:56:27,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:56:27,633 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:56:27,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 18:56:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:56:27,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-03 18:56:27,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:56:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 18:56:27,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:56:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 18:56:28,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922735410] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:56:28,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:56:28,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 14 [2023-08-03 18:56:28,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438439826] [2023-08-03 18:56:28,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:56:28,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 18:56:28,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:56:28,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 18:56:28,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2023-08-03 18:56:28,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 253 [2023-08-03 18:56:28,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 134 transitions, 906 flow. Second operand has 16 states, 16 states have (on average 123.8125) internal successors, (1981), 16 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:56:28,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:56:28,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 253 [2023-08-03 18:56:28,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-03 18:56:38,987 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 18:56:38,987 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 18:56:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-03 18:56:39,594 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 18:56:39,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-03 18:56:39,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:56:39,795 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 118/253 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 446637 conditions, 120603 events (98098/120602 cut-off events. For 349046/349046 co-relation queries the response was YES. Maximal size of possible extension queue 7552. Compared 648006 event pairs, 7295 based on Foata normal form. 0/128117 useless extension candidates. Maximal degree in co-relation 446517. Up to 51330 conditions per place.). [2023-08-03 18:56:39,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-03 18:56:39,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 18:56:39,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 18:56:39,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 18:56:39,795 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:56:39,797 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 18:56:39,797 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 18:56:39,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 06:56:39 BasicIcfg [2023-08-03 18:56:39,800 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 18:56:39,800 INFO L158 Benchmark]: Toolchain (without parser) took 586744.59ms. Allocated memory was 364.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 308.4MB in the beginning and 9.1GB in the end (delta: -8.8GB). Peak memory consumption was 6.9GB. Max. memory is 16.0GB. [2023-08-03 18:56:39,801 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory is still 317.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:56:39,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.40ms. Allocated memory is still 364.9MB. Free memory was 308.4MB in the beginning and 287.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 18:56:39,801 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.28ms. Allocated memory is still 364.9MB. Free memory was 287.4MB in the beginning and 285.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:56:39,801 INFO L158 Benchmark]: Boogie Preprocessor took 50.62ms. Allocated memory is still 364.9MB. Free memory was 285.3MB in the beginning and 283.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:56:39,801 INFO L158 Benchmark]: RCFGBuilder took 352.87ms. Allocated memory is still 364.9MB. Free memory was 283.2MB in the beginning and 265.4MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 18:56:39,802 INFO L158 Benchmark]: TraceAbstraction took 585851.01ms. Allocated memory was 364.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 265.4MB in the beginning and 9.1GB in the end (delta: -8.9GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. [2023-08-03 18:56:39,803 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory is still 317.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 439.40ms. Allocated memory is still 364.9MB. Free memory was 308.4MB in the beginning and 287.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.28ms. Allocated memory is still 364.9MB. Free memory was 287.4MB in the beginning and 285.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 50.62ms. Allocated memory is still 364.9MB. Free memory was 285.3MB in the beginning and 283.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 352.87ms. Allocated memory is still 364.9MB. Free memory was 283.2MB in the beginning and 265.4MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 585851.01ms. Allocated memory was 364.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 265.4MB in the beginning and 9.1GB in the end (delta: -8.9GB). Peak memory consumption was 6.8GB. 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: 2.3s, 118 PlacesBefore, 41 PlacesAfterwards, 114 TransitionsBefore, 33 TransitionsAfterwards, 2526 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 91 TotalNumberOfCompositions, 3871 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2391, independent: 2316, independent conditional: 0, independent unconditional: 2316, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1297, independent: 1275, independent conditional: 0, independent unconditional: 1275, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2391, independent: 1041, independent conditional: 0, independent unconditional: 1041, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 1297, unknown conditional: 0, unknown unconditional: 1297] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 98, Positive conditional cache size: 0, Positive unconditional cache size: 98, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 152 PlacesBefore, 67 PlacesAfterwards, 140 TransitionsBefore, 51 TransitionsAfterwards, 6200 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 99 TotalNumberOfCompositions, 11207 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5669, independent: 5526, independent conditional: 0, independent unconditional: 5526, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3038, independent: 2993, independent conditional: 0, independent unconditional: 2993, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5669, independent: 2533, independent conditional: 0, independent unconditional: 2533, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 3038, unknown conditional: 0, unknown unconditional: 3038] , Statistics on independence cache: Total cache size (in pairs): 242, Positive cache size: 224, Positive conditional cache size: 0, Positive unconditional cache size: 224, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 118/253 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 446637 conditions, 120603 events (98098/120602 cut-off events. For 349046/349046 co-relation queries the response was YES. Maximal size of possible extension queue 7552. Compared 648006 event pairs, 7295 based on Foata normal form. 0/128117 useless extension candidates. Maximal degree in co-relation 446517. Up to 51330 conditions per place.). - TimeoutResultAtElement [Line: 795]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 118/253 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 446637 conditions, 120603 events (98098/120602 cut-off events. For 349046/349046 co-relation queries the response was YES. Maximal size of possible extension queue 7552. Compared 648006 event pairs, 7295 based on Foata normal form. 0/128117 useless extension candidates. Maximal degree in co-relation 446517. Up to 51330 conditions per place.). - TimeoutResultAtElement [Line: 797]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 118/253 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 446637 conditions, 120603 events (98098/120602 cut-off events. For 349046/349046 co-relation queries the response was YES. Maximal size of possible extension queue 7552. Compared 648006 event pairs, 7295 based on Foata normal form. 0/128117 useless extension candidates. Maximal degree in co-relation 446517. Up to 51330 conditions per place.). - TimeoutResultAtElement [Line: 791]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 118/253 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 446637 conditions, 120603 events (98098/120602 cut-off events. For 349046/349046 co-relation queries the response was YES. Maximal size of possible extension queue 7552. Compared 648006 event pairs, 7295 based on Foata normal form. 0/128117 useless extension candidates. Maximal degree in co-relation 446517. Up to 51330 conditions per place.). - TimeoutResultAtElement [Line: 793]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 118/253 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 446637 conditions, 120603 events (98098/120602 cut-off events. For 349046/349046 co-relation queries the response was YES. Maximal size of possible extension queue 7552. Compared 648006 event pairs, 7295 based on Foata normal form. 0/128117 useless extension candidates. Maximal degree in co-relation 446517. Up to 51330 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 149 locations, 5 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: 3.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 58 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=92occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 2 thread instances CFG has 13 procedures, 175 locations, 5 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: 582.4s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 572.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1397 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1238 mSDsluCounter, 482 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 451 mSDsCounter, 259 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3395 IncrementalHoareTripleChecker+Invalid, 3654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 259 mSolverCounterUnsat, 31 mSDtfsCounter, 3395 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 623 GetRequests, 532 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=906occurred in iteration=15, InterpolantAutomatonStates: 65, 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: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 795 NumberOfCodeBlocks, 795 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 952 ConstructedInterpolants, 0 QuantifiedInterpolants, 3492 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2777 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 36 InterpolantComputations, 10 PerfectInterpolantSequences, 494/545 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 could not prove your program: Timeout Completed graceful shutdown