./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/weaver/parallel-barrier.wvr.c -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 b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:47:14,301 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:47:14,385 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:47:14,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:47:14,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:47:14,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:47:14,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:47:14,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:47:14,427 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:47:14,427 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:47:14,428 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:47:14,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:47:14,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:47:14,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:47:14,431 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:47:14,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:47:14,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:47:14,433 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:47:14,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:47:14,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:47:14,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:47:14,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:47:14,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:47:14,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:47:14,439 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:47:14,440 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:47:14,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:47:14,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:47:14,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:47:14,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:47:14,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:47:14,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:47:14,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:47:14,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:47:14,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:47:14,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:47:14,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:47:14,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:47:14,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:47:14,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:47:14,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:47:14,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:47:14,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c [2024-11-19 01:47:14,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:47:14,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:47:14,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:47:14,728 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:47:14,729 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:47:14,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-11-19 01:47:16,264 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:47:16,443 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:47:16,444 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-11-19 01:47:16,452 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966d11674/31693f8c28904e3fa5b96c00239281fb/FLAG31b42c371 [2024-11-19 01:47:16,836 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966d11674/31693f8c28904e3fa5b96c00239281fb [2024-11-19 01:47:16,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:47:16,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:47:16,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:47:16,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:47:16,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:47:16,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:16" (1/1) ... [2024-11-19 01:47:16,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba3e0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:16, skipping insertion in model container [2024-11-19 01:47:16,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:16" (1/1) ... [2024-11-19 01:47:16,878 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:47:17,094 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/weaver/parallel-barrier.wvr.c[3418,3431] [2024-11-19 01:47:17,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:47:17,115 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:47:17,141 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/weaver/parallel-barrier.wvr.c[3418,3431] [2024-11-19 01:47:17,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:47:17,160 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:47:17,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17 WrapperNode [2024-11-19 01:47:17,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:47:17,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:47:17,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:47:17,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:47:17,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,208 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 210 [2024-11-19 01:47:17,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:47:17,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:47:17,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:47:17,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:47:17,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,246 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]. [2024-11-19 01:47:17,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:47:17,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:47:17,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:47:17,271 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:47:17,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (1/1) ... [2024-11-19 01:47:17,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:47:17,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:17,331 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) [2024-11-19 01:47:17,335 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 [2024-11-19 01:47:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:47:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:47:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:47:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:47:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:47:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:47:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:47:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 01:47:17,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 01:47:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:47:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-19 01:47:17,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-19 01:47:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-19 01:47:17,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-19 01:47:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:47:17,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:47:17,416 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:47:17,583 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:47:17,586 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:47:17,961 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:47:17,962 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:47:18,164 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:47:18,165 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 01:47:18,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:18 BoogieIcfgContainer [2024-11-19 01:47:18,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:47:18,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:47:18,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:47:18,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:47:18,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:47:16" (1/3) ... [2024-11-19 01:47:18,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8c96e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:18, skipping insertion in model container [2024-11-19 01:47:18,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:17" (2/3) ... [2024-11-19 01:47:18,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8c96e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:18, skipping insertion in model container [2024-11-19 01:47:18,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:18" (3/3) ... [2024-11-19 01:47:18,179 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-11-19 01:47:18,198 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:47:18,198 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:47:18,198 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:47:18,304 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-11-19 01:47:18,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 82 transitions, 230 flow [2024-11-19 01:47:18,408 INFO L124 PetriNetUnfolderBase]: 4/70 cut-off events. [2024-11-19 01:47:18,408 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 01:47:18,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 70 events. 4/70 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2024-11-19 01:47:18,414 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 82 transitions, 230 flow [2024-11-19 01:47:18,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 69 transitions, 186 flow [2024-11-19 01:47:18,428 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:47:18,434 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;@5f196ebb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:47:18,435 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-19 01:47:18,470 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:47:18,470 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2024-11-19 01:47:18,470 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 01:47:18,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:18,476 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2024-11-19 01:47:18,477 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-19 01:47:18,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1393916505, now seen corresponding path program 1 times [2024-11-19 01:47:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:18,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606314858] [2024-11-19 01:47:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:18,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:18,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606314858] [2024-11-19 01:47:18,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606314858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:18,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:18,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:47:18,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503338310] [2024-11-19 01:47:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:19,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:47:19,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:47:19,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:47:19,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-19 01:47:19,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 01:47:19,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:19,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-19 01:47:19,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:21,471 INFO L124 PetriNetUnfolderBase]: 14053/19607 cut-off events. [2024-11-19 01:47:21,471 INFO L125 PetriNetUnfolderBase]: For 1988/1988 co-relation queries the response was YES. [2024-11-19 01:47:21,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41191 conditions, 19607 events. 14053/19607 cut-off events. For 1988/1988 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 111288 event pairs, 8277 based on Foata normal form. 480/19128 useless extension candidates. Maximal degree in co-relation 40794. Up to 13270 conditions per place. [2024-11-19 01:47:21,696 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 67 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-11-19 01:47:21,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 391 flow [2024-11-19 01:47:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:47:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:47:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-19 01:47:21,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-11-19 01:47:21,713 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 186 flow. Second operand 3 states and 147 transitions. [2024-11-19 01:47:21,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 391 flow [2024-11-19 01:47:21,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 345 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-19 01:47:21,759 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 168 flow [2024-11-19 01:47:21,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-11-19 01:47:21,767 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2024-11-19 01:47:21,767 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 168 flow [2024-11-19 01:47:21,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 01:47:21,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:21,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2024-11-19 01:47:21,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:47:21,769 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-19 01:47:21,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1117834938, now seen corresponding path program 1 times [2024-11-19 01:47:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:21,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792223194] [2024-11-19 01:47:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:21,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:22,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792223194] [2024-11-19 01:47:22,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792223194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:22,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:22,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:47:22,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090585321] [2024-11-19 01:47:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:22,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:47:22,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:22,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:47:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:47:22,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-19 01:47:22,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 01:47:22,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:22,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-19 01:47:22,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:23,756 INFO L124 PetriNetUnfolderBase]: 13081/19085 cut-off events. [2024-11-19 01:47:23,757 INFO L125 PetriNetUnfolderBase]: For 1234/1234 co-relation queries the response was YES. [2024-11-19 01:47:23,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37939 conditions, 19085 events. 13081/19085 cut-off events. For 1234/1234 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 118255 event pairs, 7989 based on Foata normal form. 316/18251 useless extension candidates. Maximal degree in co-relation 16196. Up to 13117 conditions per place. [2024-11-19 01:47:24,008 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 68 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2024-11-19 01:47:24,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 91 transitions, 369 flow [2024-11-19 01:47:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:47:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:47:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-11-19 01:47:24,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-11-19 01:47:24,013 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 168 flow. Second operand 3 states and 148 transitions. [2024-11-19 01:47:24,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 91 transitions, 369 flow [2024-11-19 01:47:24,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:24,019 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 174 flow [2024-11-19 01:47:24,019 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-11-19 01:47:24,020 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2024-11-19 01:47:24,021 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 174 flow [2024-11-19 01:47:24,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 01:47:24,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:24,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2024-11-19 01:47:24,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:47:24,022 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-19 01:47:24,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:24,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1579026690, now seen corresponding path program 2 times [2024-11-19 01:47:24,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:24,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757687436] [2024-11-19 01:47:24,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:24,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:24,056 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:47:24,059 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:24,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:24,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757687436] [2024-11-19 01:47:24,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757687436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:24,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:24,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:47:24,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98708027] [2024-11-19 01:47:24,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:24,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:47:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:24,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:47:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:47:24,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-19 01:47:24,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 01:47:24,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:24,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-19 01:47:24,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:25,615 INFO L124 PetriNetUnfolderBase]: 11919/17063 cut-off events. [2024-11-19 01:47:25,616 INFO L125 PetriNetUnfolderBase]: For 1688/1716 co-relation queries the response was YES. [2024-11-19 01:47:25,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35062 conditions, 17063 events. 11919/17063 cut-off events. For 1688/1716 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 99863 event pairs, 7037 based on Foata normal form. 348/16362 useless extension candidates. Maximal degree in co-relation 12583. Up to 11081 conditions per place. [2024-11-19 01:47:25,721 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 69 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2024-11-19 01:47:25,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 379 flow [2024-11-19 01:47:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:47:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:47:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-19 01:47:25,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5775193798449613 [2024-11-19 01:47:25,727 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 174 flow. Second operand 3 states and 149 transitions. [2024-11-19 01:47:25,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 379 flow [2024-11-19 01:47:25,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 369 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:25,733 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 180 flow [2024-11-19 01:47:25,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-19 01:47:25,735 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -7 predicate places. [2024-11-19 01:47:25,735 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 180 flow [2024-11-19 01:47:25,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 01:47:25,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:25,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2024-11-19 01:47:25,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:47:25,737 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-19 01:47:25,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:25,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1751838118, now seen corresponding path program 3 times [2024-11-19 01:47:25,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:25,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225460569] [2024-11-19 01:47:25,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:25,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:25,778 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:47:25,778 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:26,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:26,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225460569] [2024-11-19 01:47:26,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225460569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:26,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:26,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-19 01:47:26,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743465852] [2024-11-19 01:47:26,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:26,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 01:47:26,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:26,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 01:47:26,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2024-11-19 01:47:26,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 86 [2024-11-19 01:47:26,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 180 flow. Second operand has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:26,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:26,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 86 [2024-11-19 01:47:26,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:34,446 INFO L124 PetriNetUnfolderBase]: 57138/76185 cut-off events. [2024-11-19 01:47:34,446 INFO L125 PetriNetUnfolderBase]: For 9138/9138 co-relation queries the response was YES. [2024-11-19 01:47:34,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159492 conditions, 76185 events. 57138/76185 cut-off events. For 9138/9138 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 416243 event pairs, 5441 based on Foata normal form. 1/73356 useless extension candidates. Maximal degree in co-relation 63161. Up to 36443 conditions per place. [2024-11-19 01:47:35,039 INFO L140 encePairwiseOnDemand]: 64/86 looper letters, 521 selfloop transitions, 200 changer transitions 20/751 dead transitions. [2024-11-19 01:47:35,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 751 transitions, 3271 flow [2024-11-19 01:47:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-19 01:47:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-19 01:47:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1654 transitions. [2024-11-19 01:47:35,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33741330069359443 [2024-11-19 01:47:35,050 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 180 flow. Second operand 57 states and 1654 transitions. [2024-11-19 01:47:35,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 751 transitions, 3271 flow [2024-11-19 01:47:35,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 751 transitions, 3235 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:35,097 INFO L231 Difference]: Finished difference. Result has 158 places, 292 transitions, 1380 flow [2024-11-19 01:47:35,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=1380, PETRI_PLACES=158, PETRI_TRANSITIONS=292} [2024-11-19 01:47:35,099 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 74 predicate places. [2024-11-19 01:47:35,099 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 292 transitions, 1380 flow [2024-11-19 01:47:35,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:35,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:35,100 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2024-11-19 01:47:35,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:47:35,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-19 01:47:35,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:35,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1986151880, now seen corresponding path program 4 times [2024-11-19 01:47:35,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:35,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963936074] [2024-11-19 01:47:35,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:35,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:35,144 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:35,145 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:35,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:35,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963936074] [2024-11-19 01:47:35,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963936074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:35,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:35,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:47:35,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889614392] [2024-11-19 01:47:35,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:35,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:47:35,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:35,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:47:35,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:47:35,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-19 01:47:35,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 292 transitions, 1380 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 01:47:35,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:35,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-19 01:47:35,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:39,082 INFO L124 PetriNetUnfolderBase]: 27704/40051 cut-off events. [2024-11-19 01:47:39,082 INFO L125 PetriNetUnfolderBase]: For 86602/87398 co-relation queries the response was YES. [2024-11-19 01:47:39,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113412 conditions, 40051 events. 27704/40051 cut-off events. For 86602/87398 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 256052 event pairs, 13088 based on Foata normal form. 1406/38659 useless extension candidates. Maximal degree in co-relation 113367. Up to 26051 conditions per place. [2024-11-19 01:47:39,480 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 140 selfloop transitions, 4 changer transitions 0/300 dead transitions. [2024-11-19 01:47:39,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 300 transitions, 1723 flow [2024-11-19 01:47:39,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:47:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:47:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-11-19 01:47:39,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5658914728682171 [2024-11-19 01:47:39,482 INFO L175 Difference]: Start difference. First operand has 158 places, 292 transitions, 1380 flow. Second operand 3 states and 146 transitions. [2024-11-19 01:47:39,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 300 transitions, 1723 flow [2024-11-19 01:47:39,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 300 transitions, 1709 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:39,801 INFO L231 Difference]: Finished difference. Result has 159 places, 274 transitions, 1318 flow [2024-11-19 01:47:39,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1318, PETRI_PLACES=159, PETRI_TRANSITIONS=274} [2024-11-19 01:47:39,803 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 75 predicate places. [2024-11-19 01:47:39,803 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 274 transitions, 1318 flow [2024-11-19 01:47:39,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 01:47:39,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:39,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2024-11-19 01:47:39,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:47:39,804 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-19 01:47:39,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1718060114, now seen corresponding path program 5 times [2024-11-19 01:47:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:39,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806579001] [2024-11-19 01:47:39,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:47:39,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:39,832 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:47:39,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:40,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:40,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806579001] [2024-11-19 01:47:40,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806579001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:40,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:40,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-19 01:47:40,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846862580] [2024-11-19 01:47:40,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:40,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 01:47:40,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 01:47:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2024-11-19 01:47:40,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 86 [2024-11-19 01:47:40,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 274 transitions, 1318 flow. Second operand has 22 states, 22 states have (on average 18.5) internal successors, (407), 22 states have internal predecessors, (407), 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) [2024-11-19 01:47:40,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:40,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 86 [2024-11-19 01:47:40,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:51,572 INFO L124 PetriNetUnfolderBase]: 62334/83742 cut-off events. [2024-11-19 01:47:51,572 INFO L125 PetriNetUnfolderBase]: For 207310/207310 co-relation queries the response was YES. [2024-11-19 01:47:51,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252906 conditions, 83742 events. 62334/83742 cut-off events. For 207310/207310 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 463185 event pairs, 7556 based on Foata normal form. 1/80421 useless extension candidates. Maximal degree in co-relation 164424. Up to 45689 conditions per place. [2024-11-19 01:47:52,216 INFO L140 encePairwiseOnDemand]: 62/86 looper letters, 866 selfloop transitions, 266 changer transitions 32/1174 dead transitions. [2024-11-19 01:47:52,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1174 transitions, 6780 flow [2024-11-19 01:47:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-19 01:47:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-19 01:47:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 2056 transitions. [2024-11-19 01:47:52,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3415282392026578 [2024-11-19 01:47:52,224 INFO L175 Difference]: Start difference. First operand has 159 places, 274 transitions, 1318 flow. Second operand 70 states and 2056 transitions. [2024-11-19 01:47:52,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1174 transitions, 6780 flow [2024-11-19 01:47:53,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1174 transitions, 6740 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:53,274 INFO L231 Difference]: Finished difference. Result has 251 places, 525 transitions, 3470 flow [2024-11-19 01:47:53,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=3470, PETRI_PLACES=251, PETRI_TRANSITIONS=525} [2024-11-19 01:47:53,276 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 167 predicate places. [2024-11-19 01:47:53,277 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 525 transitions, 3470 flow [2024-11-19 01:47:53,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.5) internal successors, (407), 22 states have internal predecessors, (407), 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) [2024-11-19 01:47:53,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:53,278 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2024-11-19 01:47:53,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:47:53,278 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-19 01:47:53,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash 206728982, now seen corresponding path program 6 times [2024-11-19 01:47:53,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:53,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655261174] [2024-11-19 01:47:53,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:47:53,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:53,302 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:47:53,302 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:54,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:54,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655261174] [2024-11-19 01:47:54,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655261174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:54,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:54,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-19 01:47:54,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942963808] [2024-11-19 01:47:54,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:54,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 01:47:54,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:54,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 01:47:54,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2024-11-19 01:47:54,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 86 [2024-11-19 01:47:54,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 525 transitions, 3470 flow. Second operand has 21 states, 21 states have (on average 18.61904761904762) internal successors, (391), 21 states have internal predecessors, (391), 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) [2024-11-19 01:47:54,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:54,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 86 [2024-11-19 01:47:54,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand