/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/added_bound_to_unbounded/pthread-ext_01b_inc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:38:33,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:38:33,663 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:38:33,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:38:33,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:38:33,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:38:33,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:38:33,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:38:33,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:38:33,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:38:33,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:38:33,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:38:33,696 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:38:33,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:38:33,697 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:38:33,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:38:33,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:38:33,697 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:38:33,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:38:33,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:38:33,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:38:33,698 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:38:33,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:38:33,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:38:33,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:38:33,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:38:33,699 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:38:33,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:38:33,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:38:33,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:38:33,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:38:33,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:38:33,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:38:33,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:38:33,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:38:33,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:38:33,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:38:33,701 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:38:33,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:38:33,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:38:33,701 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:38:33,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:38:33,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:38:33,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:38:33,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:38:33,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:38:33,856 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:38:33,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_01b_inc_bound2.i [2023-08-03 15:38:34,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:38:34,953 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:38:34,953 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_01b_inc_bound2.i [2023-08-03 15:38:34,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8cc4e0dc/e235901eb02e482f944ccc7da582ca40/FLAG029248c61 [2023-08-03 15:38:34,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8cc4e0dc/e235901eb02e482f944ccc7da582ca40 [2023-08-03 15:38:34,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:38:34,972 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:38:34,973 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:38:34,973 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:38:34,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:38:34,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:38:34" (1/1) ... [2023-08-03 15:38:34,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38576a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:34, skipping insertion in model container [2023-08-03 15:38:34,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:38:34" (1/1) ... [2023-08-03 15:38:35,014 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:38:35,133 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 15:38:35,242 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_01b_inc_bound2.i[31005,31018] [2023-08-03 15:38:35,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:38:35,257 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:38:35,274 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 15:38:35,284 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-03 15:38:35,285 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-03 15:38:35,290 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [704] [2023-08-03 15:38:35,291 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned [716] [2023-08-03 15:38:35,292 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_01b_inc_bound2.i[31005,31018] [2023-08-03 15:38:35,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:38:35,315 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:38:35,315 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:38:35,315 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:38:35,320 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:38:35,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35 WrapperNode [2023-08-03 15:38:35,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:38:35,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:38:35,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:38:35,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:38:35,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,361 INFO L138 Inliner]: procedures = 173, calls = 20, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 66 [2023-08-03 15:38:35,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:38:35,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:38:35,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:38:35,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:38:35,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,389 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:38:35,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:38:35,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:38:35,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:38:35,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (1/1) ... [2023-08-03 15:38:35,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:38:35,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:38:35,415 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 15:38:35,423 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 15:38:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:38:35,441 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:38:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:38:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 15:38:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:38:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:38:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:38:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:38:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 15:38:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:38:35,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:38:35,442 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 15:38:35,552 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:38:35,553 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:38:35,697 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:38:35,753 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:38:35,754 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 15:38:35,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:38:35 BoogieIcfgContainer [2023-08-03 15:38:35,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:38:35,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:38:35,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:38:35,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:38:35,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:38:34" (1/3) ... [2023-08-03 15:38:35,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e99c38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:38:35, skipping insertion in model container [2023-08-03 15:38:35,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:38:35" (2/3) ... [2023-08-03 15:38:35,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e99c38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:38:35, skipping insertion in model container [2023-08-03 15:38:35,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:38:35" (3/3) ... [2023-08-03 15:38:35,760 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_01b_inc_bound2.i [2023-08-03 15:38:35,766 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:38:35,772 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:38:35,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:38:35,773 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:38:35,807 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:38:35,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 93 flow [2023-08-03 15:38:35,858 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2023-08-03 15:38:35,858 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:38:35,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 3/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2023-08-03 15:38:35,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 44 transitions, 93 flow [2023-08-03 15:38:35,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 93 flow [2023-08-03 15:38:35,865 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:38:35,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 44 transitions, 93 flow [2023-08-03 15:38:35,874 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 44 transitions, 93 flow [2023-08-03 15:38:35,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 93 flow [2023-08-03 15:38:35,890 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2023-08-03 15:38:35,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:38:35,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 3/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2023-08-03 15:38:35,913 INFO L119 LiptonReduction]: Number of co-enabled transitions 448 [2023-08-03 15:38:37,268 INFO L134 LiptonReduction]: Checked pairs total: 367 [2023-08-03 15:38:37,268 INFO L136 LiptonReduction]: Total number of compositions: 42 [2023-08-03 15:38:37,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:38:37,281 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;@253522e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:38:37,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:38:37,283 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:38:37,283 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 15:38:37,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:38:37,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:37,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 15:38:37,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:38:37,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:37,287 INFO L85 PathProgramCache]: Analyzing trace with hash 7836123, now seen corresponding path program 1 times [2023-08-03 15:38:37,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:37,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592724187] [2023-08-03 15:38:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:37,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:37,395 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 15:38:37,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:37,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592724187] [2023-08-03 15:38:37,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592724187] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:37,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:37,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:38:37,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088615830] [2023-08-03 15:38:37,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:37,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 15:38:37,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 15:38:37,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 15:38:37,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2023-08-03 15:38:37,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 21 flow. Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:37,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:37,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2023-08-03 15:38:37,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:37,453 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2023-08-03 15:38:37,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:38:37,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 16 events. 3/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 3 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 20. Up to 15 conditions per place. [2023-08-03 15:38:37,455 INFO L140 encePairwiseOnDemand]: 85/86 looper letters, 5 selfloop transitions, 0 changer transitions 1/7 dead transitions. [2023-08-03 15:38:37,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 31 flow [2023-08-03 15:38:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 15:38:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 15:38:37,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 81 transitions. [2023-08-03 15:38:37,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2023-08-03 15:38:37,465 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 81 transitions. [2023-08-03 15:38:37,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 81 transitions. [2023-08-03 15:38:37,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:37,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 81 transitions. [2023-08-03 15:38:37,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:37,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:37,474 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:37,475 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 21 flow. Second operand 2 states and 81 transitions. [2023-08-03 15:38:37,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 31 flow [2023-08-03 15:38:37,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 31 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:38:37,478 INFO L231 Difference]: Finished difference. Result has 11 places, 6 transitions, 17 flow [2023-08-03 15:38:37,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=11, PETRI_TRANSITIONS=6} [2023-08-03 15:38:37,481 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 0 predicate places. [2023-08-03 15:38:37,481 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 6 transitions, 17 flow [2023-08-03 15:38:37,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:37,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:37,482 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:38:37,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:38:37,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:38:37,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:37,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1059419401, now seen corresponding path program 1 times [2023-08-03 15:38:37,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:37,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463492785] [2023-08-03 15:38:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:37,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:38:37,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:38:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:38:37,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:38:37,539 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:38:37,540 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:38:37,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:38:37,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:38:37,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:38:37,542 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:38:37,543 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:38:37,543 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:38:37,552 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:38:37,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 130 flow [2023-08-03 15:38:37,562 INFO L124 PetriNetUnfolderBase]: 5/84 cut-off events. [2023-08-03 15:38:37,562 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:38:37,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 84 events. 5/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2023-08-03 15:38:37,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 59 transitions, 130 flow [2023-08-03 15:38:37,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 59 transitions, 130 flow [2023-08-03 15:38:37,563 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:38:37,563 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 59 transitions, 130 flow [2023-08-03 15:38:37,564 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 59 transitions, 130 flow [2023-08-03 15:38:37,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 130 flow [2023-08-03 15:38:37,571 INFO L124 PetriNetUnfolderBase]: 5/84 cut-off events. [2023-08-03 15:38:37,571 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:38:37,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 84 events. 5/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2023-08-03 15:38:37,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 1316 [2023-08-03 15:38:38,418 INFO L134 LiptonReduction]: Checked pairs total: 3786 [2023-08-03 15:38:38,419 INFO L136 LiptonReduction]: Total number of compositions: 36 [2023-08-03 15:38:38,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:38:38,421 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;@253522e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:38:38,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:38:38,423 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:38:38,423 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-08-03 15:38:38,423 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:38:38,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:38,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:38,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:38:38,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:38,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1084047441, now seen corresponding path program 1 times [2023-08-03 15:38:38,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:38,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742445889] [2023-08-03 15:38:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:38,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:38,582 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 15:38:38,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:38,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742445889] [2023-08-03 15:38:38,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742445889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:38,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:38,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:38:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545759944] [2023-08-03 15:38:38,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:38,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:38:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:38:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:38:38,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 95 [2023-08-03 15:38:38,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:38,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:38,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 95 [2023-08-03 15:38:38,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:38,774 INFO L124 PetriNetUnfolderBase]: 478/841 cut-off events. [2023-08-03 15:38:38,775 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-03 15:38:38,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 841 events. 478/841 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4011 event pairs, 106 based on Foata normal form. 24/683 useless extension candidates. Maximal degree in co-relation 1561. Up to 284 conditions per place. [2023-08-03 15:38:38,783 INFO L140 encePairwiseOnDemand]: 87/95 looper letters, 45 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2023-08-03 15:38:38,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 59 transitions, 248 flow [2023-08-03 15:38:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:38:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:38:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 292 transitions. [2023-08-03 15:38:38,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2023-08-03 15:38:38,789 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 292 transitions. [2023-08-03 15:38:38,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 292 transitions. [2023-08-03 15:38:38,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:38,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 292 transitions. [2023-08-03 15:38:38,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:38,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:38,795 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:38,795 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 6 states and 292 transitions. [2023-08-03 15:38:38,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 59 transitions, 248 flow [2023-08-03 15:38:38,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 59 transitions, 246 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 15:38:38,797 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 118 flow [2023-08-03 15:38:38,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-08-03 15:38:38,798 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-08-03 15:38:38,798 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 118 flow [2023-08-03 15:38:38,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:38,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:38,798 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:38:38,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:38:38,798 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:38:38,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:38,799 INFO L85 PathProgramCache]: Analyzing trace with hash 375583831, now seen corresponding path program 1 times [2023-08-03 15:38:38,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:38,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691816914] [2023-08-03 15:38:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:38,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:38,884 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 15:38:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:38,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691816914] [2023-08-03 15:38:38,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691816914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:38:38,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205757877] [2023-08-03 15:38:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:38,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:38:38,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:38:38,889 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 15:38:38,924 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 15:38:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:38,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:38:38,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:38:39,001 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 15:38:39,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:38:39,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205757877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:39,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:38:39,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:38:39,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547220166] [2023-08-03 15:38:39,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:39,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:38:39,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:39,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:38:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:38:39,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 95 [2023-08-03 15:38:39,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:39,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 95 [2023-08-03 15:38:39,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:39,079 INFO L124 PetriNetUnfolderBase]: 231/440 cut-off events. [2023-08-03 15:38:39,080 INFO L125 PetriNetUnfolderBase]: For 100/101 co-relation queries the response was YES. [2023-08-03 15:38:39,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 440 events. 231/440 cut-off events. For 100/101 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2077 event pairs, 102 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 728. Up to 295 conditions per place. [2023-08-03 15:38:39,082 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 28 selfloop transitions, 3 changer transitions 4/49 dead transitions. [2023-08-03 15:38:39,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 233 flow [2023-08-03 15:38:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:38:39,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:38:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2023-08-03 15:38:39,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031578947368421 [2023-08-03 15:38:39,083 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 239 transitions. [2023-08-03 15:38:39,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 239 transitions. [2023-08-03 15:38:39,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:39,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 239 transitions. [2023-08-03 15:38:39,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,085 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,085 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 118 flow. Second operand 5 states and 239 transitions. [2023-08-03 15:38:39,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 233 flow [2023-08-03 15:38:39,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:38:39,087 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 130 flow [2023-08-03 15:38:39,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-08-03 15:38:39,087 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2023-08-03 15:38:39,088 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 130 flow [2023-08-03 15:38:39,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:39,088 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:39,095 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 15:38:39,292 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 15:38:39,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:38:39,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:39,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1957344493, now seen corresponding path program 1 times [2023-08-03 15:38:39,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:39,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015768976] [2023-08-03 15:38:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:39,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:39,375 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 15:38:39,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015768976] [2023-08-03 15:38:39,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015768976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:39,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:39,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:38:39,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783011848] [2023-08-03 15:38:39,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:39,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:38:39,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:38:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:38:39,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 95 [2023-08-03 15:38:39,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:39,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 95 [2023-08-03 15:38:39,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:39,517 INFO L124 PetriNetUnfolderBase]: 353/664 cut-off events. [2023-08-03 15:38:39,517 INFO L125 PetriNetUnfolderBase]: For 738/741 co-relation queries the response was YES. [2023-08-03 15:38:39,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 664 events. 353/664 cut-off events. For 738/741 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3276 event pairs, 77 based on Foata normal form. 3/626 useless extension candidates. Maximal degree in co-relation 1634. Up to 257 conditions per place. [2023-08-03 15:38:39,520 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 38 selfloop transitions, 11 changer transitions 4/58 dead transitions. [2023-08-03 15:38:39,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 348 flow [2023-08-03 15:38:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:38:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:38:39,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 284 transitions. [2023-08-03 15:38:39,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982456140350877 [2023-08-03 15:38:39,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 284 transitions. [2023-08-03 15:38:39,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 284 transitions. [2023-08-03 15:38:39,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:39,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 284 transitions. [2023-08-03 15:38:39,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,524 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,524 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 130 flow. Second operand 6 states and 284 transitions. [2023-08-03 15:38:39,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 348 flow [2023-08-03 15:38:39,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:38:39,526 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 172 flow [2023-08-03 15:38:39,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-08-03 15:38:39,527 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2023-08-03 15:38:39,527 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 172 flow [2023-08-03 15:38:39,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:39,527 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:39,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:38:39,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:38:39,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:39,528 INFO L85 PathProgramCache]: Analyzing trace with hash -277345786, now seen corresponding path program 1 times [2023-08-03 15:38:39,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:39,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318208226] [2023-08-03 15:38:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:39,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:39,660 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 15:38:39,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:39,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318208226] [2023-08-03 15:38:39,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318208226] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:38:39,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880443281] [2023-08-03 15:38:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:39,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:38:39,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:38:39,662 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 15:38:39,664 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 15:38:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:39,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-03 15:38:39,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:38:39,795 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 15:38:39,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:38:39,910 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 15:38:39,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880443281] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:38:39,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:38:39,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2023-08-03 15:38:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424466341] [2023-08-03 15:38:39,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:38:39,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-03 15:38:39,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:39,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-03 15:38:39,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-03 15:38:39,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 95 [2023-08-03 15:38:39,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 172 flow. Second operand has 15 states, 15 states have (on average 36.46666666666667) internal successors, (547), 15 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:39,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:39,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 95 [2023-08-03 15:38:39,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:40,569 INFO L124 PetriNetUnfolderBase]: 660/1174 cut-off events. [2023-08-03 15:38:40,570 INFO L125 PetriNetUnfolderBase]: For 1764/1764 co-relation queries the response was YES. [2023-08-03 15:38:40,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 1174 events. 660/1174 cut-off events. For 1764/1764 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6471 event pairs, 39 based on Foata normal form. 39/1213 useless extension candidates. Maximal degree in co-relation 3549. Up to 327 conditions per place. [2023-08-03 15:38:40,575 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 78 selfloop transitions, 31 changer transitions 44/154 dead transitions. [2023-08-03 15:38:40,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 154 transitions, 998 flow [2023-08-03 15:38:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-03 15:38:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-03 15:38:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 969 transitions. [2023-08-03 15:38:40,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2023-08-03 15:38:40,577 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 969 transitions. [2023-08-03 15:38:40,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 969 transitions. [2023-08-03 15:38:40,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:40,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 969 transitions. [2023-08-03 15:38:40,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 40.375) internal successors, (969), 24 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:40,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 95.0) internal successors, (2375), 25 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:40,582 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 95.0) internal successors, (2375), 25 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:40,582 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 172 flow. Second operand 24 states and 969 transitions. [2023-08-03 15:38:40,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 154 transitions, 998 flow [2023-08-03 15:38:40,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 154 transitions, 987 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:38:40,587 INFO L231 Difference]: Finished difference. Result has 81 places, 50 transitions, 379 flow [2023-08-03 15:38:40,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=379, PETRI_PLACES=81, PETRI_TRANSITIONS=50} [2023-08-03 15:38:40,587 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2023-08-03 15:38:40,588 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 50 transitions, 379 flow [2023-08-03 15:38:40,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 36.46666666666667) internal successors, (547), 15 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:40,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:40,588 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:40,595 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 15:38:40,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-03 15:38:40,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:38:40,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash -527658080, now seen corresponding path program 1 times [2023-08-03 15:38:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074320338] [2023-08-03 15:38:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:40,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:40,907 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 15:38:40,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:40,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074320338] [2023-08-03 15:38:40,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074320338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:40,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:40,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:38:40,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923735311] [2023-08-03 15:38:40,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:40,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:38:40,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:38:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:38:40,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 95 [2023-08-03 15:38:40,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 50 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:40,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:40,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 95 [2023-08-03 15:38:40,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:41,048 INFO L124 PetriNetUnfolderBase]: 429/837 cut-off events. [2023-08-03 15:38:41,048 INFO L125 PetriNetUnfolderBase]: For 3766/3769 co-relation queries the response was YES. [2023-08-03 15:38:41,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3903 conditions, 837 events. 429/837 cut-off events. For 3766/3769 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4591 event pairs, 97 based on Foata normal form. 12/843 useless extension candidates. Maximal degree in co-relation 3800. Up to 537 conditions per place. [2023-08-03 15:38:41,052 INFO L140 encePairwiseOnDemand]: 87/95 looper letters, 50 selfloop transitions, 13 changer transitions 6/76 dead transitions. [2023-08-03 15:38:41,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 709 flow [2023-08-03 15:38:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:38:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:38:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 309 transitions. [2023-08-03 15:38:41,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46466165413533833 [2023-08-03 15:38:41,053 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 309 transitions. [2023-08-03 15:38:41,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 309 transitions. [2023-08-03 15:38:41,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:41,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 309 transitions. [2023-08-03 15:38:41,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.142857142857146) internal successors, (309), 7 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,055 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,055 INFO L175 Difference]: Start difference. First operand has 81 places, 50 transitions, 379 flow. Second operand 7 states and 309 transitions. [2023-08-03 15:38:41,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 709 flow [2023-08-03 15:38:41,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 637 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-08-03 15:38:41,065 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 377 flow [2023-08-03 15:38:41,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2023-08-03 15:38:41,065 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2023-08-03 15:38:41,065 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 377 flow [2023-08-03 15:38:41,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:41,066 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:41,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:38:41,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:38:41,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:41,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1057072620, now seen corresponding path program 2 times [2023-08-03 15:38:41,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:41,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724074801] [2023-08-03 15:38:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:41,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:41,173 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 15:38:41,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:41,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724074801] [2023-08-03 15:38:41,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724074801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:41,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:41,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 15:38:41,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717510321] [2023-08-03 15:38:41,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:41,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 15:38:41,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:41,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 15:38:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-03 15:38:41,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 95 [2023-08-03 15:38:41,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 377 flow. Second operand has 7 states, 7 states have (on average 38.857142857142854) internal successors, (272), 7 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:41,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 95 [2023-08-03 15:38:41,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:41,315 INFO L124 PetriNetUnfolderBase]: 345/690 cut-off events. [2023-08-03 15:38:41,316 INFO L125 PetriNetUnfolderBase]: For 2961/2970 co-relation queries the response was YES. [2023-08-03 15:38:41,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3080 conditions, 690 events. 345/690 cut-off events. For 2961/2970 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3687 event pairs, 19 based on Foata normal form. 27/708 useless extension candidates. Maximal degree in co-relation 2968. Up to 203 conditions per place. [2023-08-03 15:38:41,318 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 23 selfloop transitions, 6 changer transitions 39/71 dead transitions. [2023-08-03 15:38:41,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 71 transitions, 625 flow [2023-08-03 15:38:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 15:38:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 15:38:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 342 transitions. [2023-08-03 15:38:41,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-08-03 15:38:41,319 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 342 transitions. [2023-08-03 15:38:41,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 342 transitions. [2023-08-03 15:38:41,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:41,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 342 transitions. [2023-08-03 15:38:41,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.75) internal successors, (342), 8 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,322 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,322 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 377 flow. Second operand 8 states and 342 transitions. [2023-08-03 15:38:41,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 71 transitions, 625 flow [2023-08-03 15:38:41,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 590 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-03 15:38:41,330 INFO L231 Difference]: Finished difference. Result has 74 places, 24 transitions, 151 flow [2023-08-03 15:38:41,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=151, PETRI_PLACES=74, PETRI_TRANSITIONS=24} [2023-08-03 15:38:41,331 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2023-08-03 15:38:41,331 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 24 transitions, 151 flow [2023-08-03 15:38:41,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.857142857142854) internal successors, (272), 7 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:38:41,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:38:41,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:38:41,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:38:41,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:38:41,331 INFO L85 PathProgramCache]: Analyzing trace with hash -333591406, now seen corresponding path program 2 times [2023-08-03 15:38:41,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:38:41,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281863797] [2023-08-03 15:38:41,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:38:41,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:38:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:38:41,407 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 15:38:41,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:38:41,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281863797] [2023-08-03 15:38:41,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281863797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:38:41,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:38:41,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:38:41,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939216593] [2023-08-03 15:38:41,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:38:41,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:38:41,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:38:41,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:38:41,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:38:41,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 95 [2023-08-03 15:38:41,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 24 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:38:41,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 95 [2023-08-03 15:38:41,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:38:41,503 INFO L124 PetriNetUnfolderBase]: 75/184 cut-off events. [2023-08-03 15:38:41,503 INFO L125 PetriNetUnfolderBase]: For 727/730 co-relation queries the response was YES. [2023-08-03 15:38:41,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 184 events. 75/184 cut-off events. For 727/730 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 738 event pairs, 15 based on Foata normal form. 18/202 useless extension candidates. Maximal degree in co-relation 761. Up to 135 conditions per place. [2023-08-03 15:38:41,504 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-03 15:38:41,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 27 transitions, 218 flow [2023-08-03 15:38:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:38:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:38:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 247 transitions. [2023-08-03 15:38:41,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2023-08-03 15:38:41,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 247 transitions. [2023-08-03 15:38:41,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 247 transitions. [2023-08-03 15:38:41,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:38:41,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 247 transitions. [2023-08-03 15:38:41,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,507 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,507 INFO L175 Difference]: Start difference. First operand has 74 places, 24 transitions, 151 flow. Second operand 6 states and 247 transitions. [2023-08-03 15:38:41,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 27 transitions, 218 flow [2023-08-03 15:38:41,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 27 transitions, 180 flow, removed 4 selfloop flow, removed 16 redundant places. [2023-08-03 15:38:41,508 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-03 15:38:41,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-03 15:38:41,509 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-08-03 15:38:41,509 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-03 15:38:41,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:38:41,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 15:38:41,509 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 15:38:41,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:38:41,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:38:41,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:38:41,510 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2023-08-03 15:38:41,512 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:38:41,512 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:38:41,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:38:41 BasicIcfg [2023-08-03 15:38:41,515 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:38:41,515 INFO L158 Benchmark]: Toolchain (without parser) took 6543.24ms. Allocated memory was 658.5MB in the beginning and 790.6MB in the end (delta: 132.1MB). Free memory was 614.0MB in the beginning and 739.3MB in the end (delta: -125.4MB). Peak memory consumption was 8.7MB. Max. memory is 16.0GB. [2023-08-03 15:38:41,515 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 377.5MB. Free memory was 327.4MB in the beginning and 327.2MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:38:41,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.58ms. Allocated memory is still 658.5MB. Free memory was 613.4MB in the beginning and 593.5MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 15:38:41,516 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.89ms. Allocated memory is still 658.5MB. Free memory was 593.5MB in the beginning and 591.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:38:41,516 INFO L158 Benchmark]: Boogie Preprocessor took 29.38ms. Allocated memory is still 658.5MB. Free memory was 591.4MB in the beginning and 590.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:38:41,516 INFO L158 Benchmark]: RCFGBuilder took 363.39ms. Allocated memory is still 658.5MB. Free memory was 590.0MB in the beginning and 575.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 15:38:41,516 INFO L158 Benchmark]: TraceAbstraction took 5758.33ms. Allocated memory was 658.5MB in the beginning and 790.6MB in the end (delta: 132.1MB). Free memory was 574.6MB in the beginning and 739.3MB in the end (delta: -164.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:38:41,517 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 377.5MB. Free memory was 327.4MB in the beginning and 327.2MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 348.58ms. Allocated memory is still 658.5MB. Free memory was 613.4MB in the beginning and 593.5MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.89ms. Allocated memory is still 658.5MB. Free memory was 593.5MB in the beginning and 591.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.38ms. Allocated memory is still 658.5MB. Free memory was 591.4MB in the beginning and 590.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 363.39ms. Allocated memory is still 658.5MB. Free memory was 590.0MB in the beginning and 575.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5758.33ms. Allocated memory was 658.5MB in the beginning and 790.6MB in the end (delta: 132.1MB). Free memory was 574.6MB in the beginning and 739.3MB in the end (delta: -164.7MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] - GenericResultAtLocation [Line: 704]: Unsoundness Warning unspecified type, defaulting to int C: volatile unsigned [704] - GenericResultAtLocation [Line: 716]: Unsoundness Warning unspecified type, defaulting to int C: unsigned [716] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 45 PlacesBefore, 11 PlacesAfterwards, 44 TransitionsBefore, 8 TransitionsAfterwards, 448 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 42 TotalNumberOfCompositions, 367 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 367, independent: 367, independent conditional: 0, independent unconditional: 367, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 230, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 367, independent: 137, independent conditional: 0, independent unconditional: 137, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 230, unknown conditional: 0, unknown unconditional: 230] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 61 PlacesBefore, 29 PlacesAfterwards, 59 TransitionsBefore, 26 TransitionsAfterwards, 1316 CoEnabledTransitionPairs, 4 FixpointIterations, 12 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 36 TotalNumberOfCompositions, 3786 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1885, independent: 1731, independent conditional: 0, independent unconditional: 1731, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 698, independent: 673, independent conditional: 0, independent unconditional: 673, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1885, independent: 1058, independent conditional: 0, independent unconditional: 1058, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 698, unknown conditional: 0, unknown unconditional: 698] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 101, Positive conditional cache size: 0, Positive unconditional cache size: 101, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 726]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 57 locations, 3 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: 1.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 4 procedures, 71 locations, 4 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: 4.0s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 500 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 433 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1370 IncrementalHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 24 mSDtfsCounter, 1370 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=379occurred in iteration=4, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 791 SizeOfPredicates, 5 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 22/30 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:38:41,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...