/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_46_monabsex2_vs_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:59:03,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:59:03,158 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:59:03,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:59:03,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:59:03,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:59:03,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:59:03,188 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:59:03,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:59:03,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:59:03,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:59:03,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:59:03,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:59:03,195 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:59:03,195 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:59:03,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:59:03,196 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:59:03,196 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:59:03,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:59:03,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:59:03,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:59:03,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:59:03,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:59:03,197 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:59:03,198 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:59:03,198 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:59:03,198 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:59:03,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:59:03,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:59:03,199 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:59:03,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:59:03,200 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:59:03,200 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:59:03,200 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:59:03,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:59:03,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:59:03,201 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:59:03,201 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:59:03,201 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:59:03,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:59:03,201 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:59:03,202 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:59:03,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:59:03,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:59:03,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:59:03,476 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:59:03,476 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:59:03,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_46_monabsex2_vs_bound2.i [2023-08-03 21:59:04,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:59:04,862 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:59:04,862 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_46_monabsex2_vs_bound2.i [2023-08-03 21:59:04,877 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/970050282/547148f5648a4d698d38b7f85ec0a7f7/FLAG50b15284f [2023-08-03 21:59:04,888 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/970050282/547148f5648a4d698d38b7f85ec0a7f7 [2023-08-03 21:59:04,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:59:04,891 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:59:04,892 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:59:04,892 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:59:04,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:59:04,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:59:04" (1/1) ... [2023-08-03 21:59:04,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd7b65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:04, skipping insertion in model container [2023-08-03 21:59:04,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:59:04" (1/1) ... [2023-08-03 21:59:04,938 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:59:05,080 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 21:59:05,198 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_46_monabsex2_vs_bound2.i[30494,30507] [2023-08-03 21:59:05,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:59:05,220 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:59:05,244 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 21:59:05,254 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-03 21:59:05,255 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-03 21:59:05,274 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_46_monabsex2_vs_bound2.i[30494,30507] [2023-08-03 21:59:05,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:59:05,307 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:59:05,308 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:59:05,308 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:59:05,314 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:59:05,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05 WrapperNode [2023-08-03 21:59:05,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:59:05,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:59:05,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:59:05,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:59:05,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,370 INFO L138 Inliner]: procedures = 170, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2023-08-03 21:59:05,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:59:05,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:59:05,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:59:05,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:59:05,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,388 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:59:05,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:59:05,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:59:05,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:59:05,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (1/1) ... [2023-08-03 21:59:05,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:59:05,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:59:05,434 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 21:59:05,441 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 21:59:05,463 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 21:59:05,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 21:59:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:59:05,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 21:59:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:59:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:59:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:59:05,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:59:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 21:59:05,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:59:05,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:59:05,468 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 21:59:05,585 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:59:05,587 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:59:05,753 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:59:05,768 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:59:05,768 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 21:59:05,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:59:05 BoogieIcfgContainer [2023-08-03 21:59:05,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:59:05,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:59:05,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:59:05,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:59:05,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:59:04" (1/3) ... [2023-08-03 21:59:05,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e66ed71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:59:05, skipping insertion in model container [2023-08-03 21:59:05,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:59:05" (2/3) ... [2023-08-03 21:59:05,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e66ed71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:59:05, skipping insertion in model container [2023-08-03 21:59:05,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:59:05" (3/3) ... [2023-08-03 21:59:05,780 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_46_monabsex2_vs_bound2.i [2023-08-03 21:59:05,787 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:59:05,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:59:05,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:59:05,796 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:59:05,839 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:59:05,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 79 flow [2023-08-03 21:59:05,914 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2023-08-03 21:59:05,914 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:59:05,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2023-08-03 21:59:05,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 79 flow [2023-08-03 21:59:05,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 31 transitions, 67 flow [2023-08-03 21:59:05,938 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:59:05,949 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 31 transitions, 67 flow [2023-08-03 21:59:05,953 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 31 transitions, 67 flow [2023-08-03 21:59:05,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 67 flow [2023-08-03 21:59:05,974 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2023-08-03 21:59:05,974 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:59:05,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 35 events. 0/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-03 21:59:05,975 INFO L119 LiptonReduction]: Number of co-enabled transitions 140 [2023-08-03 21:59:07,198 INFO L134 LiptonReduction]: Checked pairs total: 103 [2023-08-03 21:59:07,198 INFO L136 LiptonReduction]: Total number of compositions: 29 [2023-08-03 21:59:07,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:59:07,214 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;@55b35d0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:59:07,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:59:07,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:59:07,217 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 21:59:07,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:59:07,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:59:07,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 21:59:07,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:59:07,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:59:07,222 INFO L85 PathProgramCache]: Analyzing trace with hash 4959048, now seen corresponding path program 1 times [2023-08-03 21:59:07,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:59:07,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154280188] [2023-08-03 21:59:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:59:07,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:59:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:59:07,309 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:59:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:59:07,337 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:59:07,339 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:59:07,340 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:59:07,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:59:07,342 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:59:07,344 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:59:07,345 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:59:07,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:59:07,361 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:59:07,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 102 flow [2023-08-03 21:59:07,386 INFO L124 PetriNetUnfolderBase]: 3/70 cut-off events. [2023-08-03 21:59:07,387 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:59:07,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 3/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2023-08-03 21:59:07,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 45 transitions, 102 flow [2023-08-03 21:59:07,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 39 transitions, 90 flow [2023-08-03 21:59:07,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:59:07,390 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 39 transitions, 90 flow [2023-08-03 21:59:07,390 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 39 transitions, 90 flow [2023-08-03 21:59:07,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 39 transitions, 90 flow [2023-08-03 21:59:07,402 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2023-08-03 21:59:07,402 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:59:07,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 0/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-03 21:59:07,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 392 [2023-08-03 21:59:08,393 INFO L134 LiptonReduction]: Checked pairs total: 767 [2023-08-03 21:59:08,394 INFO L136 LiptonReduction]: Total number of compositions: 30 [2023-08-03 21:59:08,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:59:08,397 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;@55b35d0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:59:08,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:59:08,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:59:08,400 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-03 21:59:08,401 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:59:08,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:59:08,401 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-03 21:59:08,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:59:08,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:59:08,402 INFO L85 PathProgramCache]: Analyzing trace with hash -271278752, now seen corresponding path program 1 times [2023-08-03 21:59:08,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:59:08,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069411219] [2023-08-03 21:59:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:59:08,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:59:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:59:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:59:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:59:08,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069411219] [2023-08-03 21:59:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069411219] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:59:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787474607] [2023-08-03 21:59:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:59:08,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:59:08,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:59:08,569 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 21:59:08,571 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 21:59:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:59:08,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:59:08,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:59:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:59:08,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:59:08,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787474607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:59:08,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:59:08,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-03 21:59:08,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846969604] [2023-08-03 21:59:08,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:59:08,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:59:08,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:59:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:59:08,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:59:08,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2023-08-03 21:59:08,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:08,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:59:08,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2023-08-03 21:59:08,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:59:08,782 INFO L124 PetriNetUnfolderBase]: 15/50 cut-off events. [2023-08-03 21:59:08,782 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 21:59:08,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 50 events. 15/50 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 145 event pairs, 0 based on Foata normal form. 16/54 useless extension candidates. Maximal degree in co-relation 28. Up to 35 conditions per place. [2023-08-03 21:59:08,783 INFO L140 encePairwiseOnDemand]: 73/75 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2023-08-03 21:59:08,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 66 flow [2023-08-03 21:59:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:59:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:59:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2023-08-03 21:59:08,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-03 21:59:08,808 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 150 transitions. [2023-08-03 21:59:08,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 150 transitions. [2023-08-03 21:59:08,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:59:08,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 150 transitions. [2023-08-03 21:59:08,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.5) internal successors, (150), 4 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 21:59:08,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:08,819 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:08,824 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 4 states and 150 transitions. [2023-08-03 21:59:08,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 66 flow [2023-08-03 21:59:08,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 65 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:59:08,828 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-08-03 21:59:08,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-08-03 21:59:08,834 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-08-03 21:59:08,835 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-08-03 21:59:08,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:08,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:59:08,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 21:59:09,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:59:09,043 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:59:09,044 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:59:09,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 102 flow [2023-08-03 21:59:09,056 INFO L124 PetriNetUnfolderBase]: 3/70 cut-off events. [2023-08-03 21:59:09,056 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:59:09,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 3/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2023-08-03 21:59:09,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 45 transitions, 102 flow [2023-08-03 21:59:09,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 45 transitions, 102 flow [2023-08-03 21:59:09,058 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:59:09,058 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 45 transitions, 102 flow [2023-08-03 21:59:09,059 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 45 transitions, 102 flow [2023-08-03 21:59:09,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 45 transitions, 102 flow [2023-08-03 21:59:09,078 INFO L124 PetriNetUnfolderBase]: 3/70 cut-off events. [2023-08-03 21:59:09,078 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:59:09,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 3/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2023-08-03 21:59:09,079 INFO L119 LiptonReduction]: Number of co-enabled transitions 560 [2023-08-03 21:59:09,881 INFO L134 LiptonReduction]: Checked pairs total: 1041 [2023-08-03 21:59:09,881 INFO L136 LiptonReduction]: Total number of compositions: 32 [2023-08-03 21:59:09,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:59:09,884 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;@55b35d0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:59:09,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:59:09,885 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:59:09,885 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 21:59:09,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:59:09,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:59:09,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 21:59:09,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:59:09,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:59:09,886 INFO L85 PathProgramCache]: Analyzing trace with hash 8519435, now seen corresponding path program 1 times [2023-08-03 21:59:09,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:59:09,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511211745] [2023-08-03 21:59:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:59:09,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:59:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:59:10,004 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 21:59:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:59:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511211745] [2023-08-03 21:59:10,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511211745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:59:10,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:59:10,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 21:59:10,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702021385] [2023-08-03 21:59:10,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:59:10,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:59:10,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:59:10,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:59:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:59:10,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 77 [2023-08-03 21:59:10,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:10,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:59:10,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 77 [2023-08-03 21:59:10,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:59:10,042 INFO L124 PetriNetUnfolderBase]: 54/130 cut-off events. [2023-08-03 21:59:10,042 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-03 21:59:10,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 130 events. 54/130 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 466 event pairs, 17 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 112. Up to 70 conditions per place. [2023-08-03 21:59:10,043 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 13 selfloop transitions, 3 changer transitions 4/24 dead transitions. [2023-08-03 21:59:10,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 24 transitions, 105 flow [2023-08-03 21:59:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:59:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:59:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2023-08-03 21:59:10,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497835497835498 [2023-08-03 21:59:10,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 127 transitions. [2023-08-03 21:59:10,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 127 transitions. [2023-08-03 21:59:10,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:59:10,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 127 transitions. [2023-08-03 21:59:10,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:10,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:10,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:10,048 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 44 flow. Second operand 3 states and 127 transitions. [2023-08-03 21:59:10,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 24 transitions, 105 flow [2023-08-03 21:59:10,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 24 transitions, 103 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 21:59:10,050 INFO L231 Difference]: Finished difference. Result has 24 places, 16 transitions, 55 flow [2023-08-03 21:59:10,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2023-08-03 21:59:10,051 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2023-08-03 21:59:10,051 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 55 flow [2023-08-03 21:59:10,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:10,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:59:10,051 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:59:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:59:10,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:59:10,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:59:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash 948356823, now seen corresponding path program 1 times [2023-08-03 21:59:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:59:10,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324002232] [2023-08-03 21:59:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:59:10,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:59:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:59:10,158 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 21:59:10,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:59:10,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324002232] [2023-08-03 21:59:10,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324002232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:59:10,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:59:10,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:59:10,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813540081] [2023-08-03 21:59:10,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:59:10,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:59:10,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:59:10,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:59:10,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:59:10,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 77 [2023-08-03 21:59:10,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:10,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:59:10,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 77 [2023-08-03 21:59:10,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:59:10,203 INFO L124 PetriNetUnfolderBase]: 86/170 cut-off events. [2023-08-03 21:59:10,204 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-03 21:59:10,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 170 events. 86/170 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 596 event pairs, 21 based on Foata normal form. 8/157 useless extension candidates. Maximal degree in co-relation 229. Up to 121 conditions per place. [2023-08-03 21:59:10,205 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-03 21:59:10,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 22 transitions, 108 flow [2023-08-03 21:59:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:59:10,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:59:10,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2023-08-03 21:59:10,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497835497835498 [2023-08-03 21:59:10,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 127 transitions. [2023-08-03 21:59:10,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 127 transitions. [2023-08-03 21:59:10,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:59:10,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 127 transitions. [2023-08-03 21:59:10,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:10,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:10,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:10,209 INFO L175 Difference]: Start difference. First operand has 24 places, 16 transitions, 55 flow. Second operand 3 states and 127 transitions. [2023-08-03 21:59:10,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 22 transitions, 108 flow [2023-08-03 21:59:10,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:59:10,210 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2023-08-03 21:59:10,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=41, 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=3, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2023-08-03 21:59:10,211 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-08-03 21:59:10,211 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2023-08-03 21:59:10,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:59:10,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 21:59:10,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 21:59:10,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 21:59:10,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 21:59:10,212 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 21:59:10,213 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (2/2) [2023-08-03 21:59:10,215 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:59:10,215 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:59:10,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:59:10 BasicIcfg [2023-08-03 21:59:10,220 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:59:10,220 INFO L158 Benchmark]: Toolchain (without parser) took 5328.80ms. Allocated memory was 354.4MB in the beginning and 511.7MB in the end (delta: 157.3MB). Free memory was 296.0MB in the beginning and 377.3MB in the end (delta: -81.3MB). Peak memory consumption was 76.2MB. Max. memory is 16.0GB. [2023-08-03 21:59:10,220 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 354.4MB. Free memory is still 304.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:59:10,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.20ms. Allocated memory is still 354.4MB. Free memory was 296.0MB in the beginning and 276.6MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 21:59:10,221 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.16ms. Allocated memory is still 354.4MB. Free memory was 276.6MB in the beginning and 274.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:59:10,221 INFO L158 Benchmark]: Boogie Preprocessor took 27.40ms. Allocated memory is still 354.4MB. Free memory was 274.8MB in the beginning and 273.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:59:10,222 INFO L158 Benchmark]: RCFGBuilder took 367.60ms. Allocated memory was 354.4MB in the beginning and 511.7MB in the end (delta: 157.3MB). Free memory was 273.3MB in the beginning and 471.8MB in the end (delta: -198.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.0GB. [2023-08-03 21:59:10,222 INFO L158 Benchmark]: TraceAbstraction took 4446.41ms. Allocated memory is still 511.7MB. Free memory was 471.1MB in the beginning and 377.3MB in the end (delta: 93.8MB). Peak memory consumption was 92.4MB. Max. memory is 16.0GB. [2023-08-03 21:59:10,224 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 354.4MB. Free memory is still 304.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 424.20ms. Allocated memory is still 354.4MB. Free memory was 296.0MB in the beginning and 276.6MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.16ms. Allocated memory is still 354.4MB. Free memory was 276.6MB in the beginning and 274.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.40ms. Allocated memory is still 354.4MB. Free memory was 274.8MB in the beginning and 273.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 367.60ms. Allocated memory was 354.4MB in the beginning and 511.7MB in the end (delta: 157.3MB). Free memory was 273.3MB in the beginning and 471.8MB in the end (delta: -198.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.0GB. * TraceAbstraction took 4446.41ms. Allocated memory is still 511.7MB. Free memory was 471.1MB in the beginning and 377.3MB in the end (delta: 93.8MB). Peak memory consumption was 92.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 265]: Unsoundness Warning unspecified type, defaulting to int C: short [265] - GenericResultAtLocation [Line: 265]: Unsoundness Warning unspecified type, defaulting to int C: short [265] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 34 PlacesBefore, 9 PlacesAfterwards, 31 TransitionsBefore, 6 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 29 TotalNumberOfCompositions, 103 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 103, independent: 103, independent conditional: 0, independent unconditional: 103, 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: 75, independent: 75, independent conditional: 0, independent unconditional: 75, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 103, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 75, unknown conditional: 0, unknown unconditional: 75] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, 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: 1.0s, 44 PlacesBefore, 19 PlacesAfterwards, 39 TransitionsBefore, 14 TransitionsAfterwards, 392 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 30 TotalNumberOfCompositions, 767 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 419, independent: 373, independent conditional: 0, independent unconditional: 373, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 192, independent: 177, independent conditional: 0, independent unconditional: 177, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 419, independent: 196, independent conditional: 0, independent unconditional: 196, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 192, unknown conditional: 0, unknown unconditional: 192] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 49 PlacesBefore, 21 PlacesAfterwards, 45 TransitionsBefore, 16 TransitionsAfterwards, 560 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 32 TotalNumberOfCompositions, 1041 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 689, independent: 643, independent conditional: 0, independent unconditional: 643, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 278, independent: 263, independent conditional: 0, independent unconditional: 263, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 689, independent: 380, independent conditional: 0, independent unconditional: 380, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 278, unknown conditional: 0, unknown unconditional: 278] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 705]: 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 for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 45 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: 1.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 53 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: 1.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 7/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 53 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: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 7 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=1, InterpolantAutomatonStates: 6, 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 21:59:10,249 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...