./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:27:20,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:27:20,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:27:20,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:27:20,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:27:20,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:27:20,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:27:20,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:27:20,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:27:20,699 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:27:20,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:27:20,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:27:20,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:27:20,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:27:20,701 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:27:20,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:27:20,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:27:20,705 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:27:20,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:27:20,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:27:20,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:27:20,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:27:20,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:27:20,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:27:20,708 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:27:20,708 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:27:20,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:27:20,709 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:27:20,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:27:20,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:27:20,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:27:20,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:27:20,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:27:20,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:27:20,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:27:20,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:27:20,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:27:20,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:27:20,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:27:20,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:27:20,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:27:20,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:27:20,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10dd65d363f3d099295f575f6743961c3e6b480300728ce34fc95b90972dc72c [2024-10-14 14:27:20,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:27:21,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:27:21,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:27:21,014 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:27:21,015 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:27:21,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-10-14 14:27:22,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:27:22,785 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:27:22,786 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-10-14 14:27:22,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/795634f95/32365e4bf4e3497b9d5511d962d66a46/FLAG1f1cd7625 [2024-10-14 14:27:23,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/795634f95/32365e4bf4e3497b9d5511d962d66a46 [2024-10-14 14:27:23,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:27:23,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:27:23,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:27:23,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:27:23,111 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:27:23,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b594310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23, skipping insertion in model container [2024-10-14 14:27:23,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,155 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:27:23,322 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-10-14 14:27:23,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:27:23,494 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:27:23,510 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-10-14 14:27:23,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:27:23,619 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:27:23,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23 WrapperNode [2024-10-14 14:27:23,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:27:23,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:27:23,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:27:23,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:27:23,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,656 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-10-14 14:27:23,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:27:23,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:27:23,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:27:23,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:27:23,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,668 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,678 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 14:27:23,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,682 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,685 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:27:23,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:27:23,688 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:27:23,688 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:27:23,689 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (1/1) ... [2024-10-14 14:27:23,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:27:23,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:27:23,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 14:27:23,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 14:27:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:27:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:27:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-14 14:27:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-14 14:27:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-14 14:27:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-14 14:27:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-14 14:27:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-14 14:27:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:27:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:27:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:27:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:27:23,778 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:27:23,888 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:27:23,890 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:27:24,036 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:27:24,036 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:27:24,152 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:27:24,152 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 14:27:24,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:27:24 BoogieIcfgContainer [2024-10-14 14:27:24,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:27:24,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:27:24,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:27:24,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:27:24,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:27:23" (1/3) ... [2024-10-14 14:27:24,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495232a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:27:24, skipping insertion in model container [2024-10-14 14:27:24,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:27:23" (2/3) ... [2024-10-14 14:27:24,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495232a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:27:24, skipping insertion in model container [2024-10-14 14:27:24,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:27:24" (3/3) ... [2024-10-14 14:27:24,163 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-10-14 14:27:24,199 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:27:24,199 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:27:24,199 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:27:24,259 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 14:27:24,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-10-14 14:27:24,336 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-10-14 14:27:24,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:27:24,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-10-14 14:27:24,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-10-14 14:27:24,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-10-14 14:27:24,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:27:24,360 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6baefe91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:27:24,360 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 14:27:24,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:27:24,376 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-10-14 14:27:24,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:27:24,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:27:24,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:27:24,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:27:24,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:27:24,384 INFO L85 PathProgramCache]: Analyzing trace with hash -160624991, now seen corresponding path program 1 times [2024-10-14 14:27:24,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:27:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133312952] [2024-10-14 14:27:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:27:24,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:27:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:27:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:27:25,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:27:25,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133312952] [2024-10-14 14:27:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133312952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:27:25,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:27:25,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:27:25,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533947594] [2024-10-14 14:27:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:27:25,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:27:25,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:27:25,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:27:25,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:27:25,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-10-14 14:27:25,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-14 14:27:25,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:27:25,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-10-14 14:27:25,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:27:25,447 INFO L124 PetriNetUnfolderBase]: 326/632 cut-off events. [2024-10-14 14:27:25,447 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 14:27:25,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 632 events. 326/632 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3693 event pairs, 164 based on Foata normal form. 24/645 useless extension candidates. Maximal degree in co-relation 1177. Up to 397 conditions per place. [2024-10-14 14:27:25,462 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 23 selfloop transitions, 3 changer transitions 21/62 dead transitions. [2024-10-14 14:27:25,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 62 transitions, 233 flow [2024-10-14 14:27:25,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:27:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:27:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-10-14 14:27:25,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-10-14 14:27:25,481 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 175 transitions. [2024-10-14 14:27:25,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 62 transitions, 233 flow [2024-10-14 14:27:25,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 62 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 14:27:25,490 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 105 flow [2024-10-14 14:27:25,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=105, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2024-10-14 14:27:25,497 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-10-14 14:27:25,497 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 105 flow [2024-10-14 14:27:25,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-10-14 14:27:25,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:27:25,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:27:25,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:27:25,498 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:27:25,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:27:25,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1615370560, now seen corresponding path program 1 times [2024-10-14 14:27:25,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:27:25,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620319012] [2024-10-14 14:27:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:27:25,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:27:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:27:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:27:25,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:27:25,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620319012] [2024-10-14 14:27:25,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620319012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:27:25,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:27:25,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:27:25,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718882588] [2024-10-14 14:27:25,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:27:25,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:27:25,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:27:25,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:27:25,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:27:25,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-10-14 14:27:25,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 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) [2024-10-14 14:27:25,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:27:25,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-10-14 14:27:25,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:27:26,281 INFO L124 PetriNetUnfolderBase]: 599/1155 cut-off events. [2024-10-14 14:27:26,284 INFO L125 PetriNetUnfolderBase]: For 754/754 co-relation queries the response was YES. [2024-10-14 14:27:26,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2770 conditions, 1155 events. 599/1155 cut-off events. For 754/754 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7262 event pairs, 75 based on Foata normal form. 33/1179 useless extension candidates. Maximal degree in co-relation 2755. Up to 489 conditions per place. [2024-10-14 14:27:26,300 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 45 selfloop transitions, 11 changer transitions 42/112 dead transitions. [2024-10-14 14:27:26,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 112 transitions, 589 flow [2024-10-14 14:27:26,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 14:27:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 14:27:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 321 transitions. [2024-10-14 14:27:26,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6497975708502024 [2024-10-14 14:27:26,304 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 105 flow. Second operand 13 states and 321 transitions. [2024-10-14 14:27:26,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 112 transitions, 589 flow [2024-10-14 14:27:26,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 112 transitions, 560 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-10-14 14:27:26,316 INFO L231 Difference]: Finished difference. Result has 66 places, 42 transitions, 222 flow [2024-10-14 14:27:26,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=222, PETRI_PLACES=66, PETRI_TRANSITIONS=42} [2024-10-14 14:27:26,318 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-10-14 14:27:26,318 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 42 transitions, 222 flow [2024-10-14 14:27:26,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 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) [2024-10-14 14:27:26,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:27:26,319 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:27:26,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:27:26,319 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:27:26,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:27:26,321 INFO L85 PathProgramCache]: Analyzing trace with hash -261200818, now seen corresponding path program 1 times [2024-10-14 14:27:26,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:27:26,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726511476] [2024-10-14 14:27:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:27:26,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:27:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:27:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:27:26,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:27:26,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726511476] [2024-10-14 14:27:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726511476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:27:26,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:27:26,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:27:26,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518769043] [2024-10-14 14:27:26,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:27:26,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:27:26,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:27:26,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:27:26,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:27:26,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-10-14 14:27:26,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 42 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 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) [2024-10-14 14:27:26,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:27:26,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-10-14 14:27:26,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:27:26,844 INFO L124 PetriNetUnfolderBase]: 597/1173 cut-off events. [2024-10-14 14:27:26,845 INFO L125 PetriNetUnfolderBase]: For 4939/4942 co-relation queries the response was YES. [2024-10-14 14:27:26,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4244 conditions, 1173 events. 597/1173 cut-off events. For 4939/4942 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7636 event pairs, 113 based on Foata normal form. 48/1207 useless extension candidates. Maximal degree in co-relation 4219. Up to 307 conditions per place. [2024-10-14 14:27:26,856 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 26 selfloop transitions, 5 changer transitions 55/100 dead transitions. [2024-10-14 14:27:26,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 100 transitions, 822 flow [2024-10-14 14:27:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:27:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:27:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-10-14 14:27:26,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6421052631578947 [2024-10-14 14:27:26,862 INFO L175 Difference]: Start difference. First operand has 66 places, 42 transitions, 222 flow. Second operand 10 states and 244 transitions. [2024-10-14 14:27:26,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 100 transitions, 822 flow [2024-10-14 14:27:26,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 100 transitions, 702 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-10-14 14:27:26,878 INFO L231 Difference]: Finished difference. Result has 68 places, 36 transitions, 177 flow [2024-10-14 14:27:26,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=177, PETRI_PLACES=68, PETRI_TRANSITIONS=36} [2024-10-14 14:27:26,880 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-10-14 14:27:26,880 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 36 transitions, 177 flow [2024-10-14 14:27:26,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 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) [2024-10-14 14:27:26,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:27:26,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:27:26,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:27:26,881 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:27:26,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:27:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash 470979201, now seen corresponding path program 1 times [2024-10-14 14:27:26,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:27:26,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839367451] [2024-10-14 14:27:26,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:27:26,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:27:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:27:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:27:26,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:27:26,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839367451] [2024-10-14 14:27:26,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839367451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:27:26,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:27:26,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:27:26,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534556533] [2024-10-14 14:27:26,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:27:26,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:27:26,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:27:26,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:27:26,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:27:26,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-10-14 14:27:26,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 36 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-10-14 14:27:26,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:27:26,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-10-14 14:27:26,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:27:27,136 INFO L124 PetriNetUnfolderBase]: 429/868 cut-off events. [2024-10-14 14:27:27,136 INFO L125 PetriNetUnfolderBase]: For 2150/2210 co-relation queries the response was YES. [2024-10-14 14:27:27,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 868 events. 429/868 cut-off events. For 2150/2210 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5126 event pairs, 94 based on Foata normal form. 36/858 useless extension candidates. Maximal degree in co-relation 2537. Up to 317 conditions per place. [2024-10-14 14:27:27,146 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 26 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2024-10-14 14:27:27,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 273 flow [2024-10-14 14:27:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:27:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:27:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-14 14:27:27,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2024-10-14 14:27:27,148 INFO L175 Difference]: Start difference. First operand has 68 places, 36 transitions, 177 flow. Second operand 4 states and 113 transitions. [2024-10-14 14:27:27,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 273 flow [2024-10-14 14:27:27,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 241 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-10-14 14:27:27,156 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 183 flow [2024-10-14 14:27:27,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-10-14 14:27:27,157 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-10-14 14:27:27,158 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 183 flow [2024-10-14 14:27:27,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-10-14 14:27:27,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:27:27,158 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:27:27,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:27:27,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:27:27,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:27:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash 648086206, now seen corresponding path program 1 times [2024-10-14 14:27:27,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:27:27,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828616918] [2024-10-14 14:27:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:27:27,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:27:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:27:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:27:27,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:27:27,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828616918] [2024-10-14 14:27:27,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828616918] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:27:27,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:27:27,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:27:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971340700] [2024-10-14 14:27:27,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:27:27,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:27:27,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:27:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:27:27,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:27:27,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-10-14 14:27:27,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-10-14 14:27:27,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:27:27,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-10-14 14:27:27,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:27:27,386 INFO L124 PetriNetUnfolderBase]: 354/727 cut-off events. [2024-10-14 14:27:27,386 INFO L125 PetriNetUnfolderBase]: For 836/1020 co-relation queries the response was YES. [2024-10-14 14:27:27,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 727 events. 354/727 cut-off events. For 836/1020 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3852 event pairs, 33 based on Foata normal form. 42/731 useless extension candidates. Maximal degree in co-relation 2025. Up to 272 conditions per place. [2024-10-14 14:27:27,393 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 33 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-10-14 14:27:27,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 328 flow [2024-10-14 14:27:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:27:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:27:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-10-14 14:27:27,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7526315789473684 [2024-10-14 14:27:27,394 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 183 flow. Second operand 5 states and 143 transitions. [2024-10-14 14:27:27,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 328 flow [2024-10-14 14:27:27,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 316 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-14 14:27:27,398 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 226 flow [2024-10-14 14:27:27,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-10-14 14:27:27,399 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-10-14 14:27:27,400 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 226 flow [2024-10-14 14:27:27,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-10-14 14:27:27,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:27:27,400 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:27:27,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:27:27,401 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:27:27,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:27:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1365514355, now seen corresponding path program 1 times [2024-10-14 14:27:27,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:27:27,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670927232] [2024-10-14 14:27:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:27:27,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:27:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:27:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:27:27,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:27:27,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670927232] [2024-10-14 14:27:27,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670927232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:27:27,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:27:27,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:27:27,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343127453] [2024-10-14 14:27:27,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:27:27,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:27:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:27:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:27:27,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:27:27,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-10-14 14:27:27,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-10-14 14:27:27,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:27:27,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-10-14 14:27:27,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:27:27,684 INFO L124 PetriNetUnfolderBase]: 270/535 cut-off events. [2024-10-14 14:27:27,685 INFO L125 PetriNetUnfolderBase]: For 913/1340 co-relation queries the response was YES. [2024-10-14 14:27:27,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 535 events. 270/535 cut-off events. For 913/1340 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2417 event pairs, 13 based on Foata normal form. 39/540 useless extension candidates. Maximal degree in co-relation 1652. Up to 200 conditions per place. [2024-10-14 14:27:27,689 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 32 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2024-10-14 14:27:27,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 361 flow [2024-10-14 14:27:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:27:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:27:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-10-14 14:27:27,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2024-10-14 14:27:27,691 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 226 flow. Second operand 6 states and 165 transitions. [2024-10-14 14:27:27,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 361 flow [2024-10-14 14:27:27,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 332 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-10-14 14:27:27,694 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 242 flow [2024-10-14 14:27:27,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-10-14 14:27:27,695 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-10-14 14:27:27,695 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 242 flow [2024-10-14 14:27:27,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-10-14 14:27:27,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:27:27,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:27:27,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 14:27:27,696 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:27:27,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:27:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1124659686, now seen corresponding path program 1 times [2024-10-14 14:27:27,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:27:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826295774] [2024-10-14 14:27:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:27:27,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:27:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:27:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:27:27,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:27:27,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826295774] [2024-10-14 14:27:27,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826295774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:27:27,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:27:27,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:27:27,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395019116] [2024-10-14 14:27:27,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:27:27,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:27:27,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:27:27,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:27:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:27:27,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-10-14 14:27:27,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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) [2024-10-14 14:27:27,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:27:27,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-10-14 14:27:27,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:27:28,025 INFO L124 PetriNetUnfolderBase]: 335/783 cut-off events. [2024-10-14 14:27:28,025 INFO L125 PetriNetUnfolderBase]: For 1462/1594 co-relation queries the response was YES. [2024-10-14 14:27:28,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2243 conditions, 783 events. 335/783 cut-off events. For 1462/1594 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4671 event pairs, 105 based on Foata normal form. 14/703 useless extension candidates. Maximal degree in co-relation 2220. Up to 263 conditions per place. [2024-10-14 14:27:28,031 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 18 selfloop transitions, 1 changer transitions 22/66 dead transitions. [2024-10-14 14:27:28,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 66 transitions, 382 flow [2024-10-14 14:27:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:27:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:27:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-10-14 14:27:28,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 14:27:28,033 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 242 flow. Second operand 6 states and 152 transitions. [2024-10-14 14:27:28,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 66 transitions, 382 flow [2024-10-14 14:27:28,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 346 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-14 14:27:28,038 INFO L231 Difference]: Finished difference. Result has 67 places, 41 transitions, 201 flow [2024-10-14 14:27:28,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=67, PETRI_TRANSITIONS=41} [2024-10-14 14:27:28,039 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-10-14 14:27:28,039 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 41 transitions, 201 flow [2024-10-14 14:27:28,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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) [2024-10-14 14:27:28,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:27:28,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:27:28,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 14:27:28,040 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 14:27:28,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:27:28,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1513144238, now seen corresponding path program 2 times [2024-10-14 14:27:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:27:28,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366750170] [2024-10-14 14:27:28,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:27:28,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:27:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:27:28,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:27:28,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:27:28,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366750170] [2024-10-14 14:27:28,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366750170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:27:28,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:27:28,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:27:28,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286229377] [2024-10-14 14:27:28,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:27:28,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:27:28,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:27:28,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:27:28,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:27:28,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-10-14 14:27:28,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 41 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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) [2024-10-14 14:27:28,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:27:28,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-10-14 14:27:28,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:27:28,359 INFO L124 PetriNetUnfolderBase]: 157/401 cut-off events. [2024-10-14 14:27:28,360 INFO L125 PetriNetUnfolderBase]: For 556/623 co-relation queries the response was YES. [2024-10-14 14:27:28,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 401 events. 157/401 cut-off events. For 556/623 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2046 event pairs, 8 based on Foata normal form. 11/372 useless extension candidates. Maximal degree in co-relation 1104. Up to 163 conditions per place. [2024-10-14 14:27:28,362 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2024-10-14 14:27:28,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 51 transitions, 275 flow [2024-10-14 14:27:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:27:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:27:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-10-14 14:27:28,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-10-14 14:27:28,364 INFO L175 Difference]: Start difference. First operand has 67 places, 41 transitions, 201 flow. Second operand 6 states and 142 transitions. [2024-10-14 14:27:28,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 51 transitions, 275 flow [2024-10-14 14:27:28,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 266 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-14 14:27:28,367 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-10-14 14:27:28,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-10-14 14:27:28,370 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-10-14 14:27:28,370 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-10-14 14:27:28,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 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) [2024-10-14 14:27:28,376 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-14 14:27:28,377 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-14 14:27:28,377 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-14 14:27:28,377 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-14 14:27:28,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 14:27:28,378 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-10-14 14:27:28,382 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 14:27:28,382 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 14:27:28,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 02:27:28 BasicIcfg [2024-10-14 14:27:28,391 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 14:27:28,392 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 14:27:28,392 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 14:27:28,392 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 14:27:28,394 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:27:24" (3/4) ... [2024-10-14 14:27:28,397 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 14:27:28,401 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-14 14:27:28,401 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-14 14:27:28,401 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-10-14 14:27:28,406 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-10-14 14:27:28,407 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-14 14:27:28,407 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 14:27:28,407 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-14 14:27:28,504 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 14:27:28,504 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 14:27:28,505 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 14:27:28,505 INFO L158 Benchmark]: Toolchain (without parser) took 5404.67ms. Allocated memory was 176.2MB in the beginning and 281.0MB in the end (delta: 104.9MB). Free memory was 119.5MB in the beginning and 238.2MB in the end (delta: -118.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 14:27:28,508 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 176.2MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 14:27:28,508 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.64ms. Allocated memory is still 176.2MB. Free memory was 119.5MB in the beginning and 97.5MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 14:27:28,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.02ms. Allocated memory is still 176.2MB. Free memory was 97.5MB in the beginning and 95.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 14:27:28,509 INFO L158 Benchmark]: Boogie Preprocessor took 30.45ms. Allocated memory is still 176.2MB. Free memory was 95.8MB in the beginning and 93.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 14:27:28,509 INFO L158 Benchmark]: RCFGBuilder took 464.72ms. Allocated memory is still 176.2MB. Free memory was 93.3MB in the beginning and 73.9MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 14:27:28,510 INFO L158 Benchmark]: TraceAbstraction took 4236.74ms. Allocated memory was 176.2MB in the beginning and 281.0MB in the end (delta: 104.9MB). Free memory was 72.9MB in the beginning and 242.4MB in the end (delta: -169.5MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. [2024-10-14 14:27:28,510 INFO L158 Benchmark]: Witness Printer took 112.88ms. Allocated memory is still 281.0MB. Free memory was 242.4MB in the beginning and 238.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 14:27:28,512 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 176.2MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 514.64ms. Allocated memory is still 176.2MB. Free memory was 119.5MB in the beginning and 97.5MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.02ms. Allocated memory is still 176.2MB. Free memory was 97.5MB in the beginning and 95.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.45ms. Allocated memory is still 176.2MB. Free memory was 95.8MB in the beginning and 93.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 464.72ms. Allocated memory is still 176.2MB. Free memory was 93.3MB in the beginning and 73.9MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4236.74ms. Allocated memory was 176.2MB in the beginning and 281.0MB in the end (delta: 104.9MB). Free memory was 72.9MB in the beginning and 242.4MB in the end (delta: -169.5MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. * Witness Printer took 112.88ms. Allocated memory is still 281.0MB. Free memory was 242.4MB in the beginning and 238.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 62 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 350 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 325 mSDsluCounter, 147 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 117 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 700 IncrementalHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 30 mSDtfsCounter, 700 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=6, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 630 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-14 14:27:28,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE