./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe035_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread-wmm/safe035_power.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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:12:14,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:12:14,930 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:12:14,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:12:14,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:12:14,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:12:14,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:12:14,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:12:14,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:12:14,950 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:12:14,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:12:14,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:12:14,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:12:14,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:12:14,951 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:12:14,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:12:14,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:12:14,952 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:12:14,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:12:14,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:12:14,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:12:14,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:12:14,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:12:14,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:12:14,954 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:12:14,954 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:12:14,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:12:14,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:12:14,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:12:14,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:12:14,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:12:14,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:12:14,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:12:14,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:12:14,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:12:14,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:12:14,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:12:14,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:12:14,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:12:14,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:12:14,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:12:14,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:12:14,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2024-11-12 08:12:15,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:12:15,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:12:15,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:12:15,184 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:12:15,184 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:12:15,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe035_power.i [2024-11-12 08:12:16,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:12:16,635 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:12:16,636 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe035_power.i [2024-11-12 08:12:16,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc34ab83/53fe4ca8d5314b56973b02a39cc5b292/FLAG6c1a6a135 [2024-11-12 08:12:16,668 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc34ab83/53fe4ca8d5314b56973b02a39cc5b292 [2024-11-12 08:12:16,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:12:16,671 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:12:16,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:12:16,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:12:16,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:12:16,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:12:16" (1/1) ... [2024-11-12 08:12:16,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ec5c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:16, skipping insertion in model container [2024-11-12 08:12:16,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:12:16" (1/1) ... [2024-11-12 08:12:16,712 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:12:16,887 WARN L250 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/safe035_power.i[947,960] [2024-11-12 08:12:17,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:12:17,050 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:12:17,060 WARN L250 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/safe035_power.i[947,960] [2024-11-12 08:12:17,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:12:17,152 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:12:17,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17 WrapperNode [2024-11-12 08:12:17,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:12:17,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:12:17,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:12:17,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:12:17,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,204 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2024-11-12 08:12:17,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:12:17,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:12:17,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:12:17,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:12:17,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,247 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]. [2024-11-12 08:12:17,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:12:17,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:12:17,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:12:17,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:12:17,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (1/1) ... [2024-11-12 08:12:17,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:12:17,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:12:17,372 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) [2024-11-12 08:12:17,382 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 [2024-11-12 08:12:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:12:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:12:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-12 08:12:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-12 08:12:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-12 08:12:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-12 08:12:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-12 08:12:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-12 08:12:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:12:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:12:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:12:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:12:17,428 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:12:17,534 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:12:17,535 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:12:17,853 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:12:17,853 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:12:18,051 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:12:18,051 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-12 08:12:18,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:12:18 BoogieIcfgContainer [2024-11-12 08:12:18,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:12:18,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:12:18,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:12:18,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:12:18,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:12:16" (1/3) ... [2024-11-12 08:12:18,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f49f87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:12:18, skipping insertion in model container [2024-11-12 08:12:18,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:12:17" (2/3) ... [2024-11-12 08:12:18,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f49f87a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:12:18, skipping insertion in model container [2024-11-12 08:12:18,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:12:18" (3/3) ... [2024-11-12 08:12:18,059 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2024-11-12 08:12:18,073 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:12:18,073 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 08:12:18,073 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:12:18,118 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 08:12:18,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 96 flow [2024-11-12 08:12:18,174 INFO L124 PetriNetUnfolderBase]: 1/39 cut-off events. [2024-11-12 08:12:18,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:12:18,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 1/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-11-12 08:12:18,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 96 flow [2024-11-12 08:12:18,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 39 transitions, 87 flow [2024-11-12 08:12:18,189 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:12:18,195 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;@3a360144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:12:18,195 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-12 08:12:18,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:12:18,200 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-11-12 08:12:18,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:12:18,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:18,201 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:12:18,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:18,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:18,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1597382317, now seen corresponding path program 1 times [2024-11-12 08:12:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:18,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385754293] [2024-11-12 08:12:18,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:18,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:12:18,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385754293] [2024-11-12 08:12:18,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385754293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:18,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:12:18,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 08:12:18,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916983679] [2024-11-12 08:12:18,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:18,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:12:18,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:12:18,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:12:18,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-12 08:12:18,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-12 08:12:18,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:18,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-12 08:12:18,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:19,342 INFO L124 PetriNetUnfolderBase]: 1951/3088 cut-off events. [2024-11-12 08:12:19,342 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-12 08:12:19,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5983 conditions, 3088 events. 1951/3088 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 18876 event pairs, 266 based on Foata normal form. 120/3172 useless extension candidates. Maximal degree in co-relation 5972. Up to 2386 conditions per place. [2024-11-12 08:12:19,365 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 33 selfloop transitions, 2 changer transitions 2/50 dead transitions. [2024-11-12 08:12:19,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 183 flow [2024-11-12 08:12:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:12:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:12:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-11-12 08:12:19,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2024-11-12 08:12:19,379 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 87 flow. Second operand 3 states and 88 transitions. [2024-11-12 08:12:19,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 183 flow [2024-11-12 08:12:19,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 08:12:19,385 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 82 flow [2024-11-12 08:12:19,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-11-12 08:12:19,392 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-11-12 08:12:19,393 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 82 flow [2024-11-12 08:12:19,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-12 08:12:19,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:19,394 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:12:19,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:12:19,394 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:19,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1890798407, now seen corresponding path program 1 times [2024-11-12 08:12:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:19,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636853844] [2024-11-12 08:12:19,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:19,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:12:19,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:19,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636853844] [2024-11-12 08:12:19,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636853844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:19,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:12:19,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:12:19,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565201785] [2024-11-12 08:12:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:19,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:12:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:19,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:12:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:12:19,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-11-12 08:12:19,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-12 08:12:19,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:19,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-11-12 08:12:19,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:20,484 INFO L124 PetriNetUnfolderBase]: 2423/3832 cut-off events. [2024-11-12 08:12:20,484 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-12 08:12:20,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7578 conditions, 3832 events. 2423/3832 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 24159 event pairs, 661 based on Foata normal form. 0/3748 useless extension candidates. Maximal degree in co-relation 7568. Up to 1372 conditions per place. [2024-11-12 08:12:20,498 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 32 selfloop transitions, 2 changer transitions 53/98 dead transitions. [2024-11-12 08:12:20,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 384 flow [2024-11-12 08:12:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:12:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:12:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-11-12 08:12:20,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-11-12 08:12:20,502 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 82 flow. Second operand 8 states and 201 transitions. [2024-11-12 08:12:20,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 384 flow [2024-11-12 08:12:20,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 98 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:12:20,506 INFO L231 Difference]: Finished difference. Result has 55 places, 35 transitions, 92 flow [2024-11-12 08:12:20,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=92, PETRI_PLACES=55, PETRI_TRANSITIONS=35} [2024-11-12 08:12:20,508 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2024-11-12 08:12:20,508 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 35 transitions, 92 flow [2024-11-12 08:12:20,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-12 08:12:20,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:20,509 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:12:20,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:12:20,510 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:20,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:20,512 INFO L85 PathProgramCache]: Analyzing trace with hash 286561760, now seen corresponding path program 1 times [2024-11-12 08:12:20,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:20,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875140691] [2024-11-12 08:12:20,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:20,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:12:21,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:21,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875140691] [2024-11-12 08:12:21,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875140691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:21,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:12:21,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:12:21,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373182984] [2024-11-12 08:12:21,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:21,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:12:21,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:21,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:12:21,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:12:21,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-11-12 08:12:21,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 35 transitions, 92 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 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) [2024-11-12 08:12:21,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:21,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-11-12 08:12:21,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:22,836 INFO L124 PetriNetUnfolderBase]: 3661/5794 cut-off events. [2024-11-12 08:12:22,836 INFO L125 PetriNetUnfolderBase]: For 730/730 co-relation queries the response was YES. [2024-11-12 08:12:22,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12528 conditions, 5794 events. 3661/5794 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 37061 event pairs, 543 based on Foata normal form. 135/5911 useless extension candidates. Maximal degree in co-relation 12513. Up to 2389 conditions per place. [2024-11-12 08:12:22,860 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 53 selfloop transitions, 15 changer transitions 47/125 dead transitions. [2024-11-12 08:12:22,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 125 transitions, 518 flow [2024-11-12 08:12:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:12:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:12:22,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-11-12 08:12:22,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5880952380952381 [2024-11-12 08:12:22,864 INFO L175 Difference]: Start difference. First operand has 55 places, 35 transitions, 92 flow. Second operand 10 states and 247 transitions. [2024-11-12 08:12:22,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 125 transitions, 518 flow [2024-11-12 08:12:22,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 125 transitions, 494 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-12 08:12:22,907 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 201 flow [2024-11-12 08:12:22,907 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=201, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-11-12 08:12:22,908 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2024-11-12 08:12:22,908 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 201 flow [2024-11-12 08:12:22,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 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) [2024-11-12 08:12:22,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:22,909 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:12:22,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:12:22,909 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:22,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1248427591, now seen corresponding path program 1 times [2024-11-12 08:12:22,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:22,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445896366] [2024-11-12 08:12:22,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:22,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:12:23,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445896366] [2024-11-12 08:12:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445896366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:23,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:12:23,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:12:23,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735472050] [2024-11-12 08:12:23,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:23,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:12:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:23,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:12:23,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:12:23,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-11-12 08:12:23,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 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) [2024-11-12 08:12:23,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:23,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-11-12 08:12:23,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:25,206 INFO L124 PetriNetUnfolderBase]: 4136/6596 cut-off events. [2024-11-12 08:12:25,207 INFO L125 PetriNetUnfolderBase]: For 6750/6770 co-relation queries the response was YES. [2024-11-12 08:12:25,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19896 conditions, 6596 events. 4136/6596 cut-off events. For 6750/6770 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 43690 event pairs, 442 based on Foata normal form. 65/6643 useless extension candidates. Maximal degree in co-relation 19878. Up to 2790 conditions per place. [2024-11-12 08:12:25,249 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 73 selfloop transitions, 20 changer transitions 38/141 dead transitions. [2024-11-12 08:12:25,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 141 transitions, 881 flow [2024-11-12 08:12:25,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 08:12:25,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 08:12:25,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 275 transitions. [2024-11-12 08:12:25,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5456349206349206 [2024-11-12 08:12:25,253 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 201 flow. Second operand 12 states and 275 transitions. [2024-11-12 08:12:25,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 141 transitions, 881 flow [2024-11-12 08:12:25,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 141 transitions, 858 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-12 08:12:25,270 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 383 flow [2024-11-12 08:12:25,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=383, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-12 08:12:25,272 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2024-11-12 08:12:25,272 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 383 flow [2024-11-12 08:12:25,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 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) [2024-11-12 08:12:25,272 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:25,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:12:25,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:12:25,273 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:25,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:25,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1719423301, now seen corresponding path program 2 times [2024-11-12 08:12:25,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:25,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79991779] [2024-11-12 08:12:25,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:25,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:12:25,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:25,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79991779] [2024-11-12 08:12:25,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79991779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:25,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:12:25,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:12:25,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921818040] [2024-11-12 08:12:25,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:25,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:12:25,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:12:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:12:25,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-12 08:12:25,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-11-12 08:12:25,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:25,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-12 08:12:25,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:26,757 INFO L124 PetriNetUnfolderBase]: 5898/9037 cut-off events. [2024-11-12 08:12:26,757 INFO L125 PetriNetUnfolderBase]: For 35249/35379 co-relation queries the response was YES. [2024-11-12 08:12:26,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35217 conditions, 9037 events. 5898/9037 cut-off events. For 35249/35379 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 55967 event pairs, 832 based on Foata normal form. 565/9555 useless extension candidates. Maximal degree in co-relation 35193. Up to 4184 conditions per place. [2024-11-12 08:12:26,798 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 99 selfloop transitions, 5 changer transitions 6/123 dead transitions. [2024-11-12 08:12:26,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 123 transitions, 1017 flow [2024-11-12 08:12:26,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:12:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:12:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-12 08:12:26,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-12 08:12:26,799 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 383 flow. Second operand 4 states and 110 transitions. [2024-11-12 08:12:26,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 123 transitions, 1017 flow [2024-11-12 08:12:26,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 123 transitions, 981 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-12 08:12:26,826 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 401 flow [2024-11-12 08:12:26,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=401, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-11-12 08:12:26,828 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2024-11-12 08:12:26,828 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 401 flow [2024-11-12 08:12:26,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-11-12 08:12:26,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:26,829 INFO L206 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] [2024-11-12 08:12:26,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:12:26,829 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:26,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1533968904, now seen corresponding path program 1 times [2024-11-12 08:12:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:26,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597680695] [2024-11-12 08:12:26,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:12:27,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:27,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597680695] [2024-11-12 08:12:27,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597680695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:27,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:12:27,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:12:27,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013309135] [2024-11-12 08:12:27,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:27,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:12:27,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:27,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:12:27,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:12:27,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-12 08:12:27,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 401 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-12 08:12:27,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:27,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-12 08:12:27,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:27,917 INFO L124 PetriNetUnfolderBase]: 4475/6982 cut-off events. [2024-11-12 08:12:27,918 INFO L125 PetriNetUnfolderBase]: For 26026/26142 co-relation queries the response was YES. [2024-11-12 08:12:27,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28149 conditions, 6982 events. 4475/6982 cut-off events. For 26026/26142 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42094 event pairs, 736 based on Foata normal form. 404/7339 useless extension candidates. Maximal degree in co-relation 28125. Up to 2574 conditions per place. [2024-11-12 08:12:27,949 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 99 selfloop transitions, 8 changer transitions 12/132 dead transitions. [2024-11-12 08:12:27,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 132 transitions, 1092 flow [2024-11-12 08:12:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:12:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:12:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-11-12 08:12:27,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2024-11-12 08:12:27,951 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 401 flow. Second operand 5 states and 141 transitions. [2024-11-12 08:12:27,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 132 transitions, 1092 flow [2024-11-12 08:12:27,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 132 transitions, 1089 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:12:27,965 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 439 flow [2024-11-12 08:12:27,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=439, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2024-11-12 08:12:27,966 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2024-11-12 08:12:27,966 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 439 flow [2024-11-12 08:12:27,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-12 08:12:27,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:27,967 INFO L206 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] [2024-11-12 08:12:27,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:12:27,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:27,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:27,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1491675154, now seen corresponding path program 1 times [2024-11-12 08:12:27,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:27,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491480053] [2024-11-12 08:12:27,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:27,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:12:29,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:29,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491480053] [2024-11-12 08:12:29,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491480053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:12:29,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547467083] [2024-11-12 08:12:29,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:29,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:12:29,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:12:29,350 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) [2024-11-12 08:12:29,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:12:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:29,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-12 08:12:29,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:12:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:12:30,254 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:12:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:12:39,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547467083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:12:39,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:12:39,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 11] total 27 [2024-11-12 08:12:39,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273235079] [2024-11-12 08:12:39,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:12:39,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 08:12:39,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:39,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 08:12:39,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2024-11-12 08:12:39,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-11-12 08:12:39,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 439 flow. Second operand has 28 states, 28 states have (on average 14.964285714285714) internal successors, (419), 28 states have internal predecessors, (419), 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) [2024-11-12 08:12:39,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:39,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-11-12 08:12:39,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:43,832 INFO L124 PetriNetUnfolderBase]: 5581/9875 cut-off events. [2024-11-12 08:12:43,833 INFO L125 PetriNetUnfolderBase]: For 30439/32374 co-relation queries the response was YES. [2024-11-12 08:12:43,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38770 conditions, 9875 events. 5581/9875 cut-off events. For 30439/32374 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 77737 event pairs, 580 based on Foata normal form. 319/9584 useless extension candidates. Maximal degree in co-relation 38743. Up to 2885 conditions per place. [2024-11-12 08:12:43,875 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 55 selfloop transitions, 16 changer transitions 206/295 dead transitions. [2024-11-12 08:12:43,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 295 transitions, 2570 flow [2024-11-12 08:12:43,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 08:12:43,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 08:12:43,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 581 transitions. [2024-11-12 08:12:43,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532051282051282 [2024-11-12 08:12:43,878 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 439 flow. Second operand 26 states and 581 transitions. [2024-11-12 08:12:43,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 295 transitions, 2570 flow [2024-11-12 08:12:43,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 295 transitions, 2544 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-12 08:12:43,896 INFO L231 Difference]: Finished difference. Result has 108 places, 62 transitions, 509 flow [2024-11-12 08:12:43,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=509, PETRI_PLACES=108, PETRI_TRANSITIONS=62} [2024-11-12 08:12:43,897 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 60 predicate places. [2024-11-12 08:12:43,897 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 62 transitions, 509 flow [2024-11-12 08:12:43,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.964285714285714) internal successors, (419), 28 states have internal predecessors, (419), 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) [2024-11-12 08:12:43,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:43,898 INFO L206 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] [2024-11-12 08:12:43,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 08:12:44,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:12:44,099 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:44,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:44,099 INFO L85 PathProgramCache]: Analyzing trace with hash 70659006, now seen corresponding path program 2 times [2024-11-12 08:12:44,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:44,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719654677] [2024-11-12 08:12:44,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:44,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:12:44,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:44,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719654677] [2024-11-12 08:12:44,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719654677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:44,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:12:44,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:12:44,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472129601] [2024-11-12 08:12:44,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:44,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:12:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:12:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:12:44,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-12 08:12:44,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 62 transitions, 509 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-12 08:12:44,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:44,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-12 08:12:44,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:44,753 INFO L124 PetriNetUnfolderBase]: 1487/2411 cut-off events. [2024-11-12 08:12:44,753 INFO L125 PetriNetUnfolderBase]: For 23254/23348 co-relation queries the response was YES. [2024-11-12 08:12:44,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12488 conditions, 2411 events. 1487/2411 cut-off events. For 23254/23348 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12595 event pairs, 252 based on Foata normal form. 107/2501 useless extension candidates. Maximal degree in co-relation 12446. Up to 967 conditions per place. [2024-11-12 08:12:44,769 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 77 selfloop transitions, 11 changer transitions 0/99 dead transitions. [2024-11-12 08:12:44,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 99 transitions, 1015 flow [2024-11-12 08:12:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:12:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:12:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-11-12 08:12:44,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5515873015873016 [2024-11-12 08:12:44,773 INFO L175 Difference]: Start difference. First operand has 108 places, 62 transitions, 509 flow. Second operand 6 states and 139 transitions. [2024-11-12 08:12:44,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 99 transitions, 1015 flow [2024-11-12 08:12:44,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 99 transitions, 783 flow, removed 77 selfloop flow, removed 25 redundant places. [2024-11-12 08:12:44,794 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 400 flow [2024-11-12 08:12:44,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=400, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-11-12 08:12:44,796 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2024-11-12 08:12:44,797 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 400 flow [2024-11-12 08:12:44,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-12 08:12:44,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:44,797 INFO L206 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, 1, 1, 1] [2024-11-12 08:12:44,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 08:12:44,798 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:44,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash 756063625, now seen corresponding path program 1 times [2024-11-12 08:12:44,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:44,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047319496] [2024-11-12 08:12:44,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:44,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:45,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:12:45,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:45,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047319496] [2024-11-12 08:12:45,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047319496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:45,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:12:45,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:12:45,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183400319] [2024-11-12 08:12:45,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:45,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:12:45,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:45,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:12:45,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:12:45,105 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-11-12 08:12:45,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2024-11-12 08:12:45,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:45,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-11-12 08:12:45,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:45,484 INFO L124 PetriNetUnfolderBase]: 1254/2284 cut-off events. [2024-11-12 08:12:45,484 INFO L125 PetriNetUnfolderBase]: For 9036/9628 co-relation queries the response was YES. [2024-11-12 08:12:45,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8817 conditions, 2284 events. 1254/2284 cut-off events. For 9036/9628 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14317 event pairs, 173 based on Foata normal form. 90/2157 useless extension candidates. Maximal degree in co-relation 8792. Up to 1187 conditions per place. [2024-11-12 08:12:45,495 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 33 selfloop transitions, 1 changer transitions 43/96 dead transitions. [2024-11-12 08:12:45,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 731 flow [2024-11-12 08:12:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:12:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:12:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-12 08:12:45,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-11-12 08:12:45,497 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 400 flow. Second operand 6 states and 130 transitions. [2024-11-12 08:12:45,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 731 flow [2024-11-12 08:12:45,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 653 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-11-12 08:12:45,506 INFO L231 Difference]: Finished difference. Result has 75 places, 48 transitions, 265 flow [2024-11-12 08:12:45,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=75, PETRI_TRANSITIONS=48} [2024-11-12 08:12:45,507 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2024-11-12 08:12:45,508 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 48 transitions, 265 flow [2024-11-12 08:12:45,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2024-11-12 08:12:45,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:45,509 INFO L206 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, 1, 1, 1] [2024-11-12 08:12:45,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 08:12:45,509 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:45,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1922864293, now seen corresponding path program 2 times [2024-11-12 08:12:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:45,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731045378] [2024-11-12 08:12:45,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:45,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:12:47,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:47,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731045378] [2024-11-12 08:12:47,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731045378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:47,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:12:47,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 08:12:47,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454419873] [2024-11-12 08:12:47,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:47,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 08:12:47,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 08:12:47,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-12 08:12:47,557 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-11-12 08:12:47,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 48 transitions, 265 flow. Second operand has 10 states, 10 states have (on average 15.2) internal successors, (152), 10 states have internal predecessors, (152), 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) [2024-11-12 08:12:47,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:47,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-11-12 08:12:47,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:48,088 INFO L124 PetriNetUnfolderBase]: 1011/1925 cut-off events. [2024-11-12 08:12:48,089 INFO L125 PetriNetUnfolderBase]: For 3196/3451 co-relation queries the response was YES. [2024-11-12 08:12:48,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6402 conditions, 1925 events. 1011/1925 cut-off events. For 3196/3451 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 12334 event pairs, 289 based on Foata normal form. 52/1780 useless extension candidates. Maximal degree in co-relation 6377. Up to 937 conditions per place. [2024-11-12 08:12:48,096 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 30 selfloop transitions, 5 changer transitions 29/83 dead transitions. [2024-11-12 08:12:48,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 573 flow [2024-11-12 08:12:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:12:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:12:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-11-12 08:12:48,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-11-12 08:12:48,099 INFO L175 Difference]: Start difference. First operand has 75 places, 48 transitions, 265 flow. Second operand 8 states and 161 transitions. [2024-11-12 08:12:48,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 573 flow [2024-11-12 08:12:48,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 548 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-12 08:12:48,105 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 303 flow [2024-11-12 08:12:48,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=303, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2024-11-12 08:12:48,105 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2024-11-12 08:12:48,105 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 303 flow [2024-11-12 08:12:48,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.2) internal successors, (152), 10 states have internal predecessors, (152), 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) [2024-11-12 08:12:48,106 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:48,106 INFO L206 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, 1, 1, 1] [2024-11-12 08:12:48,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 08:12:48,106 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:48,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:48,106 INFO L85 PathProgramCache]: Analyzing trace with hash 553848327, now seen corresponding path program 3 times [2024-11-12 08:12:48,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:48,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038988241] [2024-11-12 08:12:48,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:48,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:12:50,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:50,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038988241] [2024-11-12 08:12:50,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038988241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:12:50,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461157468] [2024-11-12 08:12:50,632 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:12:50,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:12:50,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:12:50,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:12:50,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:12:50,750 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-12 08:12:50,751 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:12:50,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-12 08:12:50,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:12:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:12:54,345 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:12:54,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461157468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:54,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:12:54,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 27 [2024-11-12 08:12:54,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908999563] [2024-11-12 08:12:54,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:54,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 08:12:54,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:54,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 08:12:54,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2024-11-12 08:12:54,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-12 08:12:54,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 303 flow. Second operand has 18 states, 18 states have (on average 11.444444444444445) internal successors, (206), 18 states have internal predecessors, (206), 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) [2024-11-12 08:12:54,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:54,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-12 08:12:54,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:55,607 INFO L124 PetriNetUnfolderBase]: 1507/2604 cut-off events. [2024-11-12 08:12:55,607 INFO L125 PetriNetUnfolderBase]: For 7931/8006 co-relation queries the response was YES. [2024-11-12 08:12:55,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10043 conditions, 2604 events. 1507/2604 cut-off events. For 7931/8006 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14252 event pairs, 447 based on Foata normal form. 8/2596 useless extension candidates. Maximal degree in co-relation 10017. Up to 1547 conditions per place. [2024-11-12 08:12:55,617 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 58 selfloop transitions, 32 changer transitions 38/134 dead transitions. [2024-11-12 08:12:55,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 134 transitions, 1078 flow [2024-11-12 08:12:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 08:12:55,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 08:12:55,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 268 transitions. [2024-11-12 08:12:55,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4253968253968254 [2024-11-12 08:12:55,618 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 303 flow. Second operand 15 states and 268 transitions. [2024-11-12 08:12:55,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 134 transitions, 1078 flow [2024-11-12 08:12:55,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 134 transitions, 1045 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-12 08:12:55,627 INFO L231 Difference]: Finished difference. Result has 89 places, 72 transitions, 609 flow [2024-11-12 08:12:55,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=609, PETRI_PLACES=89, PETRI_TRANSITIONS=72} [2024-11-12 08:12:55,628 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 41 predicate places. [2024-11-12 08:12:55,628 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 72 transitions, 609 flow [2024-11-12 08:12:55,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.444444444444445) internal successors, (206), 18 states have internal predecessors, (206), 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) [2024-11-12 08:12:55,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:12:55,628 INFO L206 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, 1, 1, 1] [2024-11-12 08:12:55,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 08:12:55,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-12 08:12:55,829 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 08:12:55,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:12:55,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1464283033, now seen corresponding path program 4 times [2024-11-12 08:12:55,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:12:55,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495428378] [2024-11-12 08:12:55,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:12:55,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:12:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:12:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:12:57,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:12:57,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495428378] [2024-11-12 08:12:57,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495428378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:12:57,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:12:57,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:12:57,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901269973] [2024-11-12 08:12:57,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:12:57,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:12:57,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:12:57,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:12:57,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:12:57,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-11-12 08:12:57,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 72 transitions, 609 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 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) [2024-11-12 08:12:57,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:12:57,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-11-12 08:12:57,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:12:57,573 INFO L124 PetriNetUnfolderBase]: 506/983 cut-off events. [2024-11-12 08:12:57,573 INFO L125 PetriNetUnfolderBase]: For 4174/4252 co-relation queries the response was YES. [2024-11-12 08:12:57,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 983 events. 506/983 cut-off events. For 4174/4252 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5073 event pairs, 91 based on Foata normal form. 20/961 useless extension candidates. Maximal degree in co-relation 4125. Up to 505 conditions per place. [2024-11-12 08:12:57,577 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2024-11-12 08:12:57,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 765 flow [2024-11-12 08:12:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:12:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:12:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-11-12 08:12:57,581 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-11-12 08:12:57,581 INFO L175 Difference]: Start difference. First operand has 89 places, 72 transitions, 609 flow. Second operand 7 states and 129 transitions. [2024-11-12 08:12:57,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 765 flow [2024-11-12 08:12:57,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 600 flow, removed 33 selfloop flow, removed 13 redundant places. [2024-11-12 08:12:57,590 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2024-11-12 08:12:57,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2024-11-12 08:12:57,591 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2024-11-12 08:12:57,591 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2024-11-12 08:12:57,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 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) [2024-11-12 08:12:57,593 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-11-12 08:12:57,594 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-12 08:12:57,594 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-12 08:12:57,594 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-12 08:12:57,594 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-11-12 08:12:57,594 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-12 08:12:57,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 08:12:57,594 INFO L421 BasicCegarLoop]: Path program histogram: [4, 2, 2, 1, 1, 1, 1] [2024-11-12 08:12:57,598 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 08:12:57,598 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 08:12:57,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:12:57 BasicIcfg [2024-11-12 08:12:57,603 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 08:12:57,604 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 08:12:57,604 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 08:12:57,604 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 08:12:57,604 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:12:18" (3/4) ... [2024-11-12 08:12:57,606 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 08:12:57,608 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-12 08:12:57,608 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-12 08:12:57,608 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-12 08:12:57,614 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2024-11-12 08:12:57,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-12 08:12:57,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-12 08:12:57,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-12 08:12:57,690 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 08:12:57,690 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 08:12:57,690 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 08:12:57,691 INFO L158 Benchmark]: Toolchain (without parser) took 41019.47ms. Allocated memory was 159.4MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 89.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 488.9MB. Max. memory is 16.1GB. [2024-11-12 08:12:57,691 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:12:57,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.78ms. Allocated memory is still 159.4MB. Free memory was 89.9MB in the beginning and 59.3MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-12 08:12:57,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.69ms. Allocated memory is still 159.4MB. Free memory was 59.0MB in the beginning and 55.5MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:12:57,691 INFO L158 Benchmark]: Boogie Preprocessor took 114.99ms. Allocated memory is still 159.4MB. Free memory was 55.5MB in the beginning and 129.0MB in the end (delta: -73.5MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2024-11-12 08:12:57,692 INFO L158 Benchmark]: RCFGBuilder took 729.33ms. Allocated memory is still 159.4MB. Free memory was 129.0MB in the beginning and 116.9MB in the end (delta: 12.0MB). Peak memory consumption was 87.3MB. Max. memory is 16.1GB. [2024-11-12 08:12:57,692 INFO L158 Benchmark]: TraceAbstraction took 39549.99ms. Allocated memory was 159.4MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 115.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 506.7MB. Max. memory is 16.1GB. [2024-11-12 08:12:57,692 INFO L158 Benchmark]: Witness Printer took 86.74ms. Allocated memory is still 1.9GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-12 08:12:57,693 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 480.78ms. Allocated memory is still 159.4MB. Free memory was 89.9MB in the beginning and 59.3MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.69ms. Allocated memory is still 159.4MB. Free memory was 59.0MB in the beginning and 55.5MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 114.99ms. Allocated memory is still 159.4MB. Free memory was 55.5MB in the beginning and 129.0MB in the end (delta: -73.5MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * RCFGBuilder took 729.33ms. Allocated memory is still 159.4MB. Free memory was 129.0MB in the beginning and 116.9MB in the end (delta: 12.0MB). Peak memory consumption was 87.3MB. Max. memory is 16.1GB. * TraceAbstraction took 39549.99ms. Allocated memory was 159.4MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 115.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 506.7MB. Max. memory is 16.1GB. * Witness Printer took 86.74ms. Allocated memory is still 1.9GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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 - 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, 70 locations, 6 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: 39.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1151 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1125 mSDsluCounter, 525 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 495 mSDsCounter, 568 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4493 IncrementalHoareTripleChecker+Invalid, 5061 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 568 mSolverCounterUnsat, 30 mSDtfsCounter, 4493 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=609occurred in iteration=11, InterpolantAutomatonStates: 110, 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: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 23.7s InterpolantComputationTime, 340 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 351 ConstructedInterpolants, 0 QuantifiedInterpolants, 6196 SizeOfPredicates, 33 NumberOfNonLiveVariables, 588 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 5/9 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 08:12:57,721 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