/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_45_monabsex1_vs_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:53:59,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:53:59,444 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:53:59,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:53:59,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:53:59,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:53:59,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:53:59,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:53:59,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:53:59,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:53:59,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:53:59,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:53:59,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:53:59,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:53:59,462 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:53:59,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:53:59,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:53:59,463 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:53:59,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:53:59,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:53:59,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:53:59,464 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:53:59,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:53:59,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:53:59,465 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:53:59,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:53:59,465 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:53:59,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:53:59,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:53:59,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:53:59,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:53:59,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:53:59,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:53:59,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:53:59,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:53:59,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:53:59,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:53:59,468 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:53:59,469 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:53:59,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:53:59,469 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:53:59,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:53:59,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:53:59,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:53:59,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:53:59,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:53:59,614 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:53:59,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_45_monabsex1_vs_bound2.i [2023-08-03 15:54:00,589 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:54:00,718 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:54:00,718 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_45_monabsex1_vs_bound2.i [2023-08-03 15:54:00,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2c7868da/bfa47788f6f04ae08809920132a9d335/FLAG53c564ace [2023-08-03 15:54:00,742 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2c7868da/bfa47788f6f04ae08809920132a9d335 [2023-08-03 15:54:00,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:54:00,745 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:54:00,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:54:00,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:54:00,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:54:00,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:54:00" (1/1) ... [2023-08-03 15:54:00,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a0d752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:00, skipping insertion in model container [2023-08-03 15:54:00,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:54:00" (1/1) ... [2023-08-03 15:54:00,775 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:54:00,904 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 15:54:01,006 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_45_monabsex1_vs_bound2.i[30633,30646] [2023-08-03 15:54:01,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:54:01,018 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:54:01,036 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 15:54:01,045 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [266] [2023-08-03 15:54:01,046 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [266] [2023-08-03 15:54:01,052 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_45_monabsex1_vs_bound2.i[30633,30646] [2023-08-03 15:54:01,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:54:01,070 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:54:01,070 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:54:01,071 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:54:01,075 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:54:01,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01 WrapperNode [2023-08-03 15:54:01,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:54:01,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:54:01,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:54:01,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:54:01,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,088 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,101 INFO L138 Inliner]: procedures = 171, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2023-08-03 15:54:01,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:54:01,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:54:01,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:54:01,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:54:01,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,111 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:54:01,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:54:01,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:54:01,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:54:01,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (1/1) ... [2023-08-03 15:54:01,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:54:01,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:54:01,146 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 15:54:01,147 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 15:54:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:54:01,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:54:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:54:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 15:54:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:54:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:54:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:54:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:54:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 15:54:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:54:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:54:01,169 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 15:54:01,242 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:54:01,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:54:01,312 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:54:01,322 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:54:01,322 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 15:54:01,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:54:01 BoogieIcfgContainer [2023-08-03 15:54:01,323 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:54:01,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:54:01,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:54:01,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:54:01,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:54:00" (1/3) ... [2023-08-03 15:54:01,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b8f2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:54:01, skipping insertion in model container [2023-08-03 15:54:01,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:54:01" (2/3) ... [2023-08-03 15:54:01,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b8f2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:54:01, skipping insertion in model container [2023-08-03 15:54:01,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:54:01" (3/3) ... [2023-08-03 15:54:01,333 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_45_monabsex1_vs_bound2.i [2023-08-03 15:54:01,339 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:54:01,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:54:01,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:54:01,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:54:01,371 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:54:01,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 44 transitions, 93 flow [2023-08-03 15:54:01,418 INFO L124 PetriNetUnfolderBase]: 2/54 cut-off events. [2023-08-03 15:54:01,418 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:54:01,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 26. Up to 4 conditions per place. [2023-08-03 15:54:01,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 44 transitions, 93 flow [2023-08-03 15:54:01,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 93 flow [2023-08-03 15:54:01,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:54:01,430 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 44 transitions, 93 flow [2023-08-03 15:54:01,432 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 44 transitions, 93 flow [2023-08-03 15:54:01,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 44 transitions, 93 flow [2023-08-03 15:54:01,442 INFO L124 PetriNetUnfolderBase]: 2/54 cut-off events. [2023-08-03 15:54:01,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:54:01,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 26. Up to 4 conditions per place. [2023-08-03 15:54:01,443 INFO L119 LiptonReduction]: Number of co-enabled transitions 352 [2023-08-03 15:54:02,292 INFO L134 LiptonReduction]: Checked pairs total: 281 [2023-08-03 15:54:02,293 INFO L136 LiptonReduction]: Total number of compositions: 41 [2023-08-03 15:54:02,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:54:02,312 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;@ce1ebb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:54:02,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:54:02,315 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:54:02,315 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 15:54:02,315 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:54:02,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:54:02,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 15:54:02,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:54:02,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:54:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash 5867932, now seen corresponding path program 1 times [2023-08-03 15:54:02,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:54:02,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672084444] [2023-08-03 15:54:02,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:54:02,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:54:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:54:02,459 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 15:54:02,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:54:02,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672084444] [2023-08-03 15:54:02,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672084444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:54:02,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:54:02,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:54:02,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073217685] [2023-08-03 15:54:02,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:54:02,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 15:54:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:54:02,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 15:54:02,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 15:54:02,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 85 [2023-08-03 15:54:02,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 21 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:02,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:54:02,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 85 [2023-08-03 15:54:02,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:54:02,494 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-08-03 15:54:02,494 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:54:02,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 15 events. 3/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 3 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 20. Up to 15 conditions per place. [2023-08-03 15:54:02,495 INFO L140 encePairwiseOnDemand]: 84/85 looper letters, 5 selfloop transitions, 0 changer transitions 1/7 dead transitions. [2023-08-03 15:54:02,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 31 flow [2023-08-03 15:54:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 15:54:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 15:54:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2023-08-03 15:54:02,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117647058823529 [2023-08-03 15:54:02,503 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 87 transitions. [2023-08-03 15:54:02,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 87 transitions. [2023-08-03 15:54:02,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:54:02,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 87 transitions. [2023-08-03 15:54:02,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:02,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:02,508 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:02,511 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 21 flow. Second operand 2 states and 87 transitions. [2023-08-03 15:54:02,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 31 flow [2023-08-03 15:54:02,513 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 15:54:02,513 INFO L231 Difference]: Finished difference. Result has 11 places, 6 transitions, 17 flow [2023-08-03 15:54:02,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, 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 15:54:02,516 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 0 predicate places. [2023-08-03 15:54:02,516 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 6 transitions, 17 flow [2023-08-03 15:54:02,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:02,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:54:02,517 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:54:02,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:54:02,517 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 15:54:02,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:54:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1344113399, now seen corresponding path program 1 times [2023-08-03 15:54:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:54:02,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22220295] [2023-08-03 15:54:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:54:02,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:54:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:54:02,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:54:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:54:02,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:54:02,592 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:54:02,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:54:02,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:54:02,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:54:02,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:54:02,595 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:54:02,597 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:54:02,597 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:54:02,610 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:54:02,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 56 transitions, 124 flow [2023-08-03 15:54:02,622 INFO L124 PetriNetUnfolderBase]: 3/81 cut-off events. [2023-08-03 15:54:02,622 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:54:02,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 3/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2023-08-03 15:54:02,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 56 transitions, 124 flow [2023-08-03 15:54:02,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 56 transitions, 124 flow [2023-08-03 15:54:02,623 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:54:02,623 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 56 transitions, 124 flow [2023-08-03 15:54:02,624 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 56 transitions, 124 flow [2023-08-03 15:54:02,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 56 transitions, 124 flow [2023-08-03 15:54:02,644 INFO L124 PetriNetUnfolderBase]: 3/81 cut-off events. [2023-08-03 15:54:02,644 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:54:02,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 3/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2023-08-03 15:54:02,648 INFO L119 LiptonReduction]: Number of co-enabled transitions 968 [2023-08-03 15:54:03,449 INFO L134 LiptonReduction]: Checked pairs total: 1152 [2023-08-03 15:54:03,449 INFO L136 LiptonReduction]: Total number of compositions: 43 [2023-08-03 15:54:03,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:54:03,451 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;@ce1ebb5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:54:03,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:54:03,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:54:03,452 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 15:54:03,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:54:03,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:54:03,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:54:03,453 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 15:54:03,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:54:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash 288843902, now seen corresponding path program 1 times [2023-08-03 15:54:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:54:03,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639165595] [2023-08-03 15:54:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:54:03,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:54:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:54:03,486 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 15:54:03,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:54:03,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639165595] [2023-08-03 15:54:03,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639165595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:54:03,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:54:03,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:54:03,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324413180] [2023-08-03 15:54:03,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:54:03,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:54:03,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:54:03,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:54:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:54:03,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2023-08-03 15:54:03,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:54:03,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2023-08-03 15:54:03,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:54:03,525 INFO L124 PetriNetUnfolderBase]: 104/208 cut-off events. [2023-08-03 15:54:03,526 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-03 15:54:03,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 208 events. 104/208 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 867 event pairs, 36 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 359. Up to 104 conditions per place. [2023-08-03 15:54:03,527 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 17 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2023-08-03 15:54:03,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 22 transitions, 101 flow [2023-08-03 15:54:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:54:03,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:54:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2023-08-03 15:54:03,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2023-08-03 15:54:03,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2023-08-03 15:54:03,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2023-08-03 15:54:03,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:54:03,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2023-08-03 15:54:03,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,532 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 150 transitions. [2023-08-03 15:54:03,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 22 transitions, 101 flow [2023-08-03 15:54:03,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 22 transitions, 99 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 15:54:03,532 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 60 flow [2023-08-03 15:54:03,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2023-08-03 15:54:03,533 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-08-03 15:54:03,533 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 60 flow [2023-08-03 15:54:03,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:54:03,534 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:54:03,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:54:03,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:54:03,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:54:03,534 INFO L85 PathProgramCache]: Analyzing trace with hash -632574625, now seen corresponding path program 1 times [2023-08-03 15:54:03,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:54:03,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427277945] [2023-08-03 15:54:03,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:54:03,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:54:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:54:03,560 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 15:54:03,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:54:03,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427277945] [2023-08-03 15:54:03,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427277945] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:54:03,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:54:03,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:54:03,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050747864] [2023-08-03 15:54:03,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:54:03,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:54:03,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:54:03,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:54:03,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:54:03,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2023-08-03 15:54:03,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:54:03,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2023-08-03 15:54:03,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:54:03,597 INFO L124 PetriNetUnfolderBase]: 85/187 cut-off events. [2023-08-03 15:54:03,597 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-08-03 15:54:03,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 187 events. 85/187 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 790 event pairs, 44 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 211. Up to 93 conditions per place. [2023-08-03 15:54:03,598 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 16 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2023-08-03 15:54:03,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 22 transitions, 118 flow [2023-08-03 15:54:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:54:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:54:03,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-08-03 15:54:03,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983164983164983 [2023-08-03 15:54:03,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-08-03 15:54:03,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-08-03 15:54:03,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:54:03,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-08-03 15:54:03,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,602 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 60 flow. Second operand 3 states and 148 transitions. [2023-08-03 15:54:03,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 22 transitions, 118 flow [2023-08-03 15:54:03,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 22 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:54:03,604 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 82 flow [2023-08-03 15:54:03,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-08-03 15:54:03,604 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2023-08-03 15:54:03,604 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 82 flow [2023-08-03 15:54:03,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:54:03,605 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:54:03,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:54:03,605 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 15:54:03,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:54:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1866209017, now seen corresponding path program 1 times [2023-08-03 15:54:03,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:54:03,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051787628] [2023-08-03 15:54:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:54:03,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:54:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:54:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:54:03,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:54:03,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051787628] [2023-08-03 15:54:03,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051787628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:54:03,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:54:03,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:54:03,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385971182] [2023-08-03 15:54:03,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:54:03,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:54:03,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:54:03,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:54:03,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:54:03,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2023-08-03 15:54:03,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:54:03,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2023-08-03 15:54:03,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:54:03,700 INFO L124 PetriNetUnfolderBase]: 75/165 cut-off events. [2023-08-03 15:54:03,700 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-03 15:54:03,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 165 events. 75/165 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 658 event pairs, 14 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 415. Up to 137 conditions per place. [2023-08-03 15:54:03,703 INFO L140 encePairwiseOnDemand]: 97/99 looper letters, 18 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-03 15:54:03,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 135 flow [2023-08-03 15:54:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:54:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:54:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-08-03 15:54:03,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2023-08-03 15:54:03,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-08-03 15:54:03,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-08-03 15:54:03,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:54:03,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-08-03 15:54:03,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,712 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 82 flow. Second operand 3 states and 147 transitions. [2023-08-03 15:54:03,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 135 flow [2023-08-03 15:54:03,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:54:03,715 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 74 flow [2023-08-03 15:54:03,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2023-08-03 15:54:03,716 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-08-03 15:54:03,716 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 74 flow [2023-08-03 15:54:03,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:54:03,716 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:54:03,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:54:03,717 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 15:54:03,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:54:03,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1865025116, now seen corresponding path program 1 times [2023-08-03 15:54:03,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:54:03,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825199917] [2023-08-03 15:54:03,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:54:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:54:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:54:03,778 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 15:54:03,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:54:03,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825199917] [2023-08-03 15:54:03,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825199917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:54:03,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:54:03,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:54:03,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836830071] [2023-08-03 15:54:03,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:54:03,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:54:03,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:54:03,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:54:03,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:54:03,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2023-08-03 15:54:03,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:54:03,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2023-08-03 15:54:03,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:54:03,822 INFO L124 PetriNetUnfolderBase]: 65/151 cut-off events. [2023-08-03 15:54:03,823 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-08-03 15:54:03,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 151 events. 65/151 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 603 event pairs, 18 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 199. Up to 103 conditions per place. [2023-08-03 15:54:03,824 INFO L140 encePairwiseOnDemand]: 97/99 looper letters, 14 selfloop transitions, 2 changer transitions 2/20 dead transitions. [2023-08-03 15:54:03,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 116 flow [2023-08-03 15:54:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:54:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:54:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-08-03 15:54:03,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882154882154882 [2023-08-03 15:54:03,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-08-03 15:54:03,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-08-03 15:54:03,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:54:03,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-08-03 15:54:03,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,827 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 74 flow. Second operand 3 states and 145 transitions. [2023-08-03 15:54:03,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 116 flow [2023-08-03 15:54:03,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 114 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:54:03,829 INFO L231 Difference]: Finished difference. Result has 24 places, 15 transitions, 70 flow [2023-08-03 15:54:03,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=24, PETRI_TRANSITIONS=15} [2023-08-03 15:54:03,833 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-08-03 15:54:03,833 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 70 flow [2023-08-03 15:54:03,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:03,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:54:03,833 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:54:03,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:54:03,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:54:03,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:54:03,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1978908767, now seen corresponding path program 1 times [2023-08-03 15:54:03,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:54:03,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238833775] [2023-08-03 15:54:03,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:54:03,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:54:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:54:03,897 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 15:54:03,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:54:03,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238833775] [2023-08-03 15:54:03,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238833775] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:54:03,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821377541] [2023-08-03 15:54:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:54:03,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:54:03,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:54:03,900 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 15:54:03,919 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 15:54:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:54:03,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:54:03,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:54:03,994 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 15:54:03,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:54:03,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821377541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:54:03,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:54:03,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:54:03,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541982827] [2023-08-03 15:54:03,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:54:03,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:54:03,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:54:03,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:54:03,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:54:04,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 99 [2023-08-03 15:54:04,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:04,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:54:04,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 99 [2023-08-03 15:54:04,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:54:04,028 INFO L124 PetriNetUnfolderBase]: 27/74 cut-off events. [2023-08-03 15:54:04,028 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-08-03 15:54:04,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 74 events. 27/74 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 217 event pairs, 1 based on Foata normal form. 16/89 useless extension candidates. Maximal degree in co-relation 102. Up to 34 conditions per place. [2023-08-03 15:54:04,029 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-03 15:54:04,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 177 flow [2023-08-03 15:54:04,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:54:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:54:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 238 transitions. [2023-08-03 15:54:04,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808080808080808 [2023-08-03 15:54:04,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 238 transitions. [2023-08-03 15:54:04,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 238 transitions. [2023-08-03 15:54:04,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:54:04,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 238 transitions. [2023-08-03 15:54:04,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:04,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:04,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:04,033 INFO L175 Difference]: Start difference. First operand has 24 places, 15 transitions, 70 flow. Second operand 5 states and 238 transitions. [2023-08-03 15:54:04,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 177 flow [2023-08-03 15:54:04,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:54:04,033 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-03 15:54:04,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-08-03 15:54:04,034 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-08-03 15:54:04,034 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-03 15:54:04,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:54:04,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 15:54:04,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 15:54:04,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:54:04,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:54:04,045 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 15:54:04,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:54:04,245 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-03 15:54:04,248 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:54:04,248 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:54:04,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:54:04 BasicIcfg [2023-08-03 15:54:04,251 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:54:04,251 INFO L158 Benchmark]: Toolchain (without parser) took 3506.14ms. Allocated memory is still 453.0MB. Free memory was 412.8MB in the beginning and 273.4MB in the end (delta: 139.4MB). Peak memory consumption was 140.5MB. Max. memory is 16.0GB. [2023-08-03 15:54:04,251 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 323.0MB. Free memory is still 279.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:54:04,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.95ms. Allocated memory is still 453.0MB. Free memory was 412.8MB in the beginning and 393.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 15:54:04,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.34ms. Allocated memory is still 453.0MB. Free memory was 393.9MB in the beginning and 391.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:54:04,252 INFO L158 Benchmark]: Boogie Preprocessor took 21.68ms. Allocated memory is still 453.0MB. Free memory was 391.8MB in the beginning and 390.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:54:04,252 INFO L158 Benchmark]: RCFGBuilder took 199.46ms. Allocated memory is still 453.0MB. Free memory was 390.8MB in the beginning and 377.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 15:54:04,252 INFO L158 Benchmark]: TraceAbstraction took 2921.75ms. Allocated memory is still 453.0MB. Free memory was 377.2MB in the beginning and 273.4MB in the end (delta: 103.8MB). Peak memory consumption was 104.8MB. Max. memory is 16.0GB. [2023-08-03 15:54:04,254 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 323.0MB. Free memory is still 279.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 329.95ms. Allocated memory is still 453.0MB. Free memory was 412.8MB in the beginning and 393.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.34ms. Allocated memory is still 453.0MB. Free memory was 393.9MB in the beginning and 391.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.68ms. Allocated memory is still 453.0MB. Free memory was 391.8MB in the beginning and 390.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 199.46ms. Allocated memory is still 453.0MB. Free memory was 390.8MB in the beginning and 377.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 2921.75ms. Allocated memory is still 453.0MB. Free memory was 377.2MB in the beginning and 273.4MB in the end (delta: 103.8MB). Peak memory consumption was 104.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 266]: Unsoundness Warning unspecified type, defaulting to int C: short [266] - GenericResultAtLocation [Line: 266]: Unsoundness Warning unspecified type, defaulting to int C: short [266] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9s, 46 PlacesBefore, 11 PlacesAfterwards, 44 TransitionsBefore, 8 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 281 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 281, independent: 281, independent conditional: 0, independent unconditional: 281, 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: 173, independent: 173, independent conditional: 0, independent unconditional: 173, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 281, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 173, unknown conditional: 0, unknown unconditional: 173] , 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: 0.8s, 60 PlacesBefore, 19 PlacesAfterwards, 56 TransitionsBefore, 14 TransitionsAfterwards, 968 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 43 TotalNumberOfCompositions, 1152 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 922, independent: 884, independent conditional: 0, independent unconditional: 884, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 499, independent: 485, independent conditional: 0, independent unconditional: 485, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 922, independent: 399, independent conditional: 0, independent unconditional: 399, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 499, unknown conditional: 0, unknown unconditional: 499] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 710]: 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, 56 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: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, 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, 68 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: 1.6s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 208 IncrementalHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 6 mSDtfsCounter, 208 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=2, InterpolantAutomatonStates: 17, 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, 0.2s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 86 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 17/22 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 15:54:04,275 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...