./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c --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/weaver/popl20-bad-commit-1.wvr-bad.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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:23:39,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:23:39,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:23:39,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:23:39,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:23:39,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:23:39,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:23:39,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:23:39,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:23:39,459 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:23:39,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:23:39,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:23:39,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:23:39,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:23:39,461 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:23:39,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:23:39,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:23:39,462 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:23:39,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:23:39,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:23:39,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:23:39,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:23:39,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:23:39,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:23:39,464 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:23:39,464 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:23:39,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:23:39,464 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:23:39,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:23:39,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:23:39,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:23:39,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:23:39,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:23:39,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:23:39,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:23:39,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:23:39,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:23:39,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:23:39,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:23:39,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:23:39,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:23:39,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:23:39,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 [2024-11-12 08:23:39,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:23:39,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:23:39,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:23:39,692 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:23:39,692 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:23:39,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-12 08:23:40,947 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:23:41,094 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:23:41,094 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-1.wvr-bad.c [2024-11-12 08:23:41,103 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7217253e8/75ffb7d1291549539a08c3242052ff8b/FLAG6640f0866 [2024-11-12 08:23:41,116 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7217253e8/75ffb7d1291549539a08c3242052ff8b [2024-11-12 08:23:41,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:23:41,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:23:41,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:23:41,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:23:41,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:23:41,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6c593c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41, skipping insertion in model container [2024-11-12 08:23:41,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,150 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:23:41,313 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/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2024-11-12 08:23:41,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:23:41,333 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:23:41,363 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/popl20-bad-commit-1.wvr-bad.c[5161,5174] [2024-11-12 08:23:41,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:23:41,387 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:23:41,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41 WrapperNode [2024-11-12 08:23:41,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:23:41,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:23:41,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:23:41,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:23:41,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,432 INFO L138 Inliner]: procedures = 24, calls = 53, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 337 [2024-11-12 08:23:41,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:23:41,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:23:41,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:23:41,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:23:41,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,448 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,460 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-12 08:23:41,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,464 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:23:41,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:23:41,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:23:41,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:23:41,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (1/1) ... [2024-11-12 08:23:41,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:23:41,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:23:41,518 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 08:23:41,520 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 08:23:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:23:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:23:41,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:23:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:23:41,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:23:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 08:23:41,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 08:23:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:23:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:23:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:23:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:23:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:23:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:23:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 08:23:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:23:41,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:23:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:23:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:23:41,553 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 08:23:41,640 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:23:41,643 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:23:41,998 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:23:41,998 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:23:42,242 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:23:42,242 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-12 08:23:42,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:23:42 BoogieIcfgContainer [2024-11-12 08:23:42,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:23:42,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:23:42,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:23:42,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:23:42,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:23:41" (1/3) ... [2024-11-12 08:23:42,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c0c5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:23:42, skipping insertion in model container [2024-11-12 08:23:42,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:23:41" (2/3) ... [2024-11-12 08:23:42,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c0c5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:23:42, skipping insertion in model container [2024-11-12 08:23:42,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:23:42" (3/3) ... [2024-11-12 08:23:42,250 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2024-11-12 08:23:42,263 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:23:42,263 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:23:42,263 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:23:42,324 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 08:23:42,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 61 transitions, 143 flow [2024-11-12 08:23:42,384 INFO L124 PetriNetUnfolderBase]: 17/58 cut-off events. [2024-11-12 08:23:42,385 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:23:42,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 17/58 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 118 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2024-11-12 08:23:42,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 61 transitions, 143 flow [2024-11-12 08:23:42,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 57 transitions, 132 flow [2024-11-12 08:23:42,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:23:42,408 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;@1fc6e9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:23:42,409 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 08:23:42,422 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:23:42,422 INFO L124 PetriNetUnfolderBase]: 17/56 cut-off events. [2024-11-12 08:23:42,423 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:23:42,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:23:42,423 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] [2024-11-12 08:23:42,424 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:23:42,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:23:42,430 INFO L85 PathProgramCache]: Analyzing trace with hash 798151654, now seen corresponding path program 1 times [2024-11-12 08:23:42,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:23:42,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174552145] [2024-11-12 08:23:42,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:23:42,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:23:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:23:42,653 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 08:23:42,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:23:42,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174552145] [2024-11-12 08:23:42,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174552145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:23:42,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:23:42,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:23:42,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859670341] [2024-11-12 08:23:42,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:23:42,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 08:23:42,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:23:42,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 08:23:42,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 08:23:42,713 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-12 08:23:42,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 08:23:42,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:23:42,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-12 08:23:42,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:23:42,899 INFO L124 PetriNetUnfolderBase]: 1168/1724 cut-off events. [2024-11-12 08:23:42,900 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-12 08:23:42,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3269 conditions, 1724 events. 1168/1724 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6976 event pairs, 608 based on Foata normal form. 0/1335 useless extension candidates. Maximal degree in co-relation 3018. Up to 1448 conditions per place. [2024-11-12 08:23:42,919 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 37 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2024-11-12 08:23:42,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 200 flow [2024-11-12 08:23:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 08:23:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 08:23:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-11-12 08:23:42,928 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2024-11-12 08:23:42,930 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 132 flow. Second operand 2 states and 80 transitions. [2024-11-12 08:23:42,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 200 flow [2024-11-12 08:23:42,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 188 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 08:23:42,936 INFO L231 Difference]: Finished difference. Result has 45 places, 54 transitions, 114 flow [2024-11-12 08:23:42,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=54} [2024-11-12 08:23:42,943 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2024-11-12 08:23:42,944 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 54 transitions, 114 flow [2024-11-12 08:23:42,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 08:23:42,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:23:42,944 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] [2024-11-12 08:23:42,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:23:42,944 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:23:42,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:23:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1471866714, now seen corresponding path program 1 times [2024-11-12 08:23:42,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:23:42,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697390547] [2024-11-12 08:23:42,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:23:42,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:23:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:23:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:23:43,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:23:43,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697390547] [2024-11-12 08:23:43,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697390547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:23:43,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:23:43,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:23:43,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579817251] [2024-11-12 08:23:43,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:23:43,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:23:43,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:23:43,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:23:43,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:23:43,216 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-12 08:23:43,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 54 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 08:23:43,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:23:43,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-12 08:23:43,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:23:43,497 INFO L124 PetriNetUnfolderBase]: 2356/3774 cut-off events. [2024-11-12 08:23:43,497 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-12 08:23:43,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6723 conditions, 3774 events. 2356/3774 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 20072 event pairs, 608 based on Foata normal form. 1/2897 useless extension candidates. Maximal degree in co-relation 6720. Up to 1685 conditions per place. [2024-11-12 08:23:43,518 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 59 selfloop transitions, 5 changer transitions 1/82 dead transitions. [2024-11-12 08:23:43,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 82 transitions, 305 flow [2024-11-12 08:23:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:23:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:23:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-12 08:23:43,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6885245901639344 [2024-11-12 08:23:43,522 INFO L175 Difference]: Start difference. First operand has 45 places, 54 transitions, 114 flow. Second operand 3 states and 126 transitions. [2024-11-12 08:23:43,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 82 transitions, 305 flow [2024-11-12 08:23:43,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 82 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 08:23:43,526 INFO L231 Difference]: Finished difference. Result has 48 places, 58 transitions, 147 flow [2024-11-12 08:23:43,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=48, PETRI_TRANSITIONS=58} [2024-11-12 08:23:43,527 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2024-11-12 08:23:43,527 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 58 transitions, 147 flow [2024-11-12 08:23:43,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 08:23:43,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:23:43,528 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 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 08:23:43,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:23:43,528 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:23:43,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:23:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash 72531213, now seen corresponding path program 1 times [2024-11-12 08:23:43,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:23:43,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134271494] [2024-11-12 08:23:43,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:23:43,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:23:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:23:43,629 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 08:23:43,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:23:43,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134271494] [2024-11-12 08:23:43,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134271494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:23:43,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:23:43,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:23:43,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264617593] [2024-11-12 08:23:43,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:23:43,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:23:43,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:23:43,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:23:43,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:23:43,634 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-12 08:23:43,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 58 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 08:23:43,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:23:43,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-12 08:23:43,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:23:44,085 INFO L124 PetriNetUnfolderBase]: 4520/7178 cut-off events. [2024-11-12 08:23:44,085 INFO L125 PetriNetUnfolderBase]: For 1014/1014 co-relation queries the response was YES. [2024-11-12 08:23:44,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14214 conditions, 7178 events. 4520/7178 cut-off events. For 1014/1014 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 41515 event pairs, 1277 based on Foata normal form. 110/5671 useless extension candidates. Maximal degree in co-relation 14209. Up to 3002 conditions per place. [2024-11-12 08:23:44,130 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 70 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-11-12 08:23:44,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 89 transitions, 375 flow [2024-11-12 08:23:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:23:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:23:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-12 08:23:44,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6885245901639344 [2024-11-12 08:23:44,132 INFO L175 Difference]: Start difference. First operand has 48 places, 58 transitions, 147 flow. Second operand 3 states and 126 transitions. [2024-11-12 08:23:44,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 89 transitions, 375 flow [2024-11-12 08:23:44,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:23:44,136 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 156 flow [2024-11-12 08:23:44,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2024-11-12 08:23:44,137 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-11-12 08:23:44,137 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 156 flow [2024-11-12 08:23:44,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 08:23:44,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:23:44,137 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 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 08:23:44,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:23:44,138 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:23:44,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:23:44,138 INFO L85 PathProgramCache]: Analyzing trace with hash -68573269, now seen corresponding path program 1 times [2024-11-12 08:23:44,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:23:44,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382462205] [2024-11-12 08:23:44,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:23:44,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:23:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:23:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:23:44,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:23:44,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382462205] [2024-11-12 08:23:44,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382462205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:23:44,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:23:44,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:23:44,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888237685] [2024-11-12 08:23:44,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:23:44,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:23:44,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:23:44,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:23:44,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:23:44,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-12 08:23:44,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 08:23:44,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:23:44,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-12 08:23:44,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:23:44,909 INFO L124 PetriNetUnfolderBase]: 8373/12884 cut-off events. [2024-11-12 08:23:44,910 INFO L125 PetriNetUnfolderBase]: For 2790/2790 co-relation queries the response was YES. [2024-11-12 08:23:44,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25688 conditions, 12884 events. 8373/12884 cut-off events. For 2790/2790 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 78525 event pairs, 2924 based on Foata normal form. 452/10356 useless extension candidates. Maximal degree in co-relation 25682. Up to 5995 conditions per place. [2024-11-12 08:23:44,972 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 67 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-11-12 08:23:44,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 87 transitions, 375 flow [2024-11-12 08:23:44,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:23:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:23:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-12 08:23:44,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6775956284153005 [2024-11-12 08:23:44,975 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 156 flow. Second operand 3 states and 124 transitions. [2024-11-12 08:23:44,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 87 transitions, 375 flow [2024-11-12 08:23:44,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:23:44,978 INFO L231 Difference]: Finished difference. Result has 52 places, 61 transitions, 179 flow [2024-11-12 08:23:44,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=52, PETRI_TRANSITIONS=61} [2024-11-12 08:23:44,980 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-11-12 08:23:44,980 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 61 transitions, 179 flow [2024-11-12 08:23:44,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 08:23:44,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:23:44,980 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 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 08:23:44,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:23:44,981 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:23:44,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:23:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1726625362, now seen corresponding path program 1 times [2024-11-12 08:23:44,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:23:44,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712575710] [2024-11-12 08:23:44,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:23:44,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:23:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:23:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:23:45,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:23:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712575710] [2024-11-12 08:23:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712575710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:23:45,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:23:45,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:23:45,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204733702] [2024-11-12 08:23:45,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:23:45,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:23:45,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:23:45,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:23:45,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:23:45,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-11-12 08:23:45,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 61 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 08:23:45,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:23:45,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-11-12 08:23:45,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:23:46,213 INFO L124 PetriNetUnfolderBase]: 13337/19445 cut-off events. [2024-11-12 08:23:46,213 INFO L125 PetriNetUnfolderBase]: For 6511/6533 co-relation queries the response was YES. [2024-11-12 08:23:46,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42558 conditions, 19445 events. 13337/19445 cut-off events. For 6511/6533 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 114741 event pairs, 6018 based on Foata normal form. 0/15584 useless extension candidates. Maximal degree in co-relation 42551. Up to 10586 conditions per place. [2024-11-12 08:23:46,294 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 69 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-11-12 08:23:46,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 89 transitions, 420 flow [2024-11-12 08:23:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:23:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:23:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-11-12 08:23:46,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6338797814207651 [2024-11-12 08:23:46,295 INFO L175 Difference]: Start difference. First operand has 52 places, 61 transitions, 179 flow. Second operand 3 states and 116 transitions. [2024-11-12 08:23:46,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 89 transitions, 420 flow [2024-11-12 08:23:46,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 89 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:23:46,298 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 206 flow [2024-11-12 08:23:46,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2024-11-12 08:23:46,299 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2024-11-12 08:23:46,299 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 206 flow [2024-11-12 08:23:46,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 08:23:46,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:23:46,299 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 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 08:23:46,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:23:46,300 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:23:46,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:23:46,300 INFO L85 PathProgramCache]: Analyzing trace with hash -921692788, now seen corresponding path program 1 times [2024-11-12 08:23:46,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:23:46,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312689949] [2024-11-12 08:23:46,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:23:46,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:23:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:23:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:23:46,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:23:46,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312689949] [2024-11-12 08:23:46,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312689949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:23:46,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:23:46,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:23:46,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505439204] [2024-11-12 08:23:46,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:23:46,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:23:46,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:23:46,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:23:46,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:23:46,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-12 08:23:46,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:23:46,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:23:46,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-12 08:23:46,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:23:47,649 INFO L124 PetriNetUnfolderBase]: 12942/19994 cut-off events. [2024-11-12 08:23:47,650 INFO L125 PetriNetUnfolderBase]: For 9514/9698 co-relation queries the response was YES. [2024-11-12 08:23:47,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43960 conditions, 19994 events. 12942/19994 cut-off events. For 9514/9698 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 130931 event pairs, 9078 based on Foata normal form. 285/16395 useless extension candidates. Maximal degree in co-relation 43952. Up to 13549 conditions per place. [2024-11-12 08:23:47,782 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 74 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2024-11-12 08:23:47,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 99 transitions, 462 flow [2024-11-12 08:23:47,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:23:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:23:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-11-12 08:23:47,784 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5704918032786885 [2024-11-12 08:23:47,784 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 206 flow. Second operand 5 states and 174 transitions. [2024-11-12 08:23:47,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 99 transitions, 462 flow [2024-11-12 08:23:47,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 450 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:23:47,800 INFO L231 Difference]: Finished difference. Result has 60 places, 68 transitions, 248 flow [2024-11-12 08:23:47,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=60, PETRI_TRANSITIONS=68} [2024-11-12 08:23:47,801 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2024-11-12 08:23:47,801 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 68 transitions, 248 flow [2024-11-12 08:23:47,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:23:47,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:23:47,802 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 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 08:23:47,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:23:47,802 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:23:47,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:23:47,803 INFO L85 PathProgramCache]: Analyzing trace with hash -27496799, now seen corresponding path program 1 times [2024-11-12 08:23:47,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:23:47,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537185775] [2024-11-12 08:23:47,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:23:47,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:23:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:23:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:23:48,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:23:48,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537185775] [2024-11-12 08:23:48,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537185775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:23:48,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858309015] [2024-11-12 08:23:48,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:23:48,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:23:48,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:23:48,342 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 08:23:48,343 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 08:23:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:23:48,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-12 08:23:48,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:23:48,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 08:23:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:23:48,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:23:48,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-12 08:23:49,005 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-12 08:23:49,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-12 08:23:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:23:49,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858309015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:23:49,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:23:49,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2024-11-12 08:23:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985291764] [2024-11-12 08:23:49,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:23:49,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 08:23:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:23:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 08:23:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-12 08:23:49,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-12 08:23:49,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 68 transitions, 248 flow. Second operand has 21 states, 21 states have (on average 24.285714285714285) internal successors, (510), 21 states have internal predecessors, (510), 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 08:23:49,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:23:49,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-12 08:23:49,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:23:55,763 INFO L124 PetriNetUnfolderBase]: 66302/100631 cut-off events. [2024-11-12 08:23:55,763 INFO L125 PetriNetUnfolderBase]: For 47120/49088 co-relation queries the response was YES. [2024-11-12 08:23:56,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224163 conditions, 100631 events. 66302/100631 cut-off events. For 47120/49088 co-relation queries the response was YES. Maximal size of possible extension queue 2962. Compared 779172 event pairs, 7761 based on Foata normal form. 176/80574 useless extension candidates. Maximal degree in co-relation 224152. Up to 14225 conditions per place. [2024-11-12 08:23:56,465 INFO L140 encePairwiseOnDemand]: 41/61 looper letters, 503 selfloop transitions, 128 changer transitions 9/658 dead transitions. [2024-11-12 08:23:56,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 658 transitions, 3388 flow [2024-11-12 08:23:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-12 08:23:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-12 08:23:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1243 transitions. [2024-11-12 08:23:56,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6367827868852459 [2024-11-12 08:23:56,469 INFO L175 Difference]: Start difference. First operand has 60 places, 68 transitions, 248 flow. Second operand 32 states and 1243 transitions. [2024-11-12 08:23:56,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 658 transitions, 3388 flow [2024-11-12 08:23:56,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 658 transitions, 3384 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 08:23:56,497 INFO L231 Difference]: Finished difference. Result has 111 places, 193 transitions, 1437 flow [2024-11-12 08:23:56,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1437, PETRI_PLACES=111, PETRI_TRANSITIONS=193} [2024-11-12 08:23:56,498 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 61 predicate places. [2024-11-12 08:23:56,498 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 193 transitions, 1437 flow [2024-11-12 08:23:56,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.285714285714285) internal successors, (510), 21 states have internal predecessors, (510), 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 08:23:56,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:23:56,498 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 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 08:23:56,513 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 08:23:56,699 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 08:23:56,700 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:23:56,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:23:56,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1262955219, now seen corresponding path program 1 times [2024-11-12 08:23:56,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:23:56,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809666465] [2024-11-12 08:23:56,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:23:56,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:23:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:23:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:23:56,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:23:56,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809666465] [2024-11-12 08:23:56,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809666465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:23:56,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:23:56,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:23:56,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159026934] [2024-11-12 08:23:56,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:23:56,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:23:56,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:23:56,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:23:56,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:23:56,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-11-12 08:23:56,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 193 transitions, 1437 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 08:23:56,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:23:56,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-11-12 08:23:56,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:24:08,333 INFO L124 PetriNetUnfolderBase]: 93342/134392 cut-off events. [2024-11-12 08:24:08,333 INFO L125 PetriNetUnfolderBase]: For 534532/538777 co-relation queries the response was YES. [2024-11-12 08:24:09,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521494 conditions, 134392 events. 93342/134392 cut-off events. For 534532/538777 co-relation queries the response was YES. Maximal size of possible extension queue 2774. Compared 944046 event pairs, 34847 based on Foata normal form. 188/112546 useless extension candidates. Maximal degree in co-relation 521462. Up to 63218 conditions per place. [2024-11-12 08:24:10,266 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 147 selfloop transitions, 20 changer transitions 11/191 dead transitions. [2024-11-12 08:24:10,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 191 transitions, 1738 flow [2024-11-12 08:24:10,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:24:10,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:24:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-12 08:24:10,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6120218579234973 [2024-11-12 08:24:10,268 INFO L175 Difference]: Start difference. First operand has 111 places, 193 transitions, 1437 flow. Second operand 3 states and 112 transitions. [2024-11-12 08:24:10,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 191 transitions, 1738 flow [2024-11-12 08:24:12,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 191 transitions, 1601 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-11-12 08:24:12,970 INFO L231 Difference]: Finished difference. Result has 105 places, 143 transitions, 999 flow [2024-11-12 08:24:12,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=999, PETRI_PLACES=105, PETRI_TRANSITIONS=143} [2024-11-12 08:24:12,970 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2024-11-12 08:24:12,971 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 143 transitions, 999 flow [2024-11-12 08:24:12,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 08:24:12,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:24:12,971 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 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 08:24:12,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 08:24:12,971 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:24:12,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:24:12,972 INFO L85 PathProgramCache]: Analyzing trace with hash -321414640, now seen corresponding path program 1 times [2024-11-12 08:24:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:24:12,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492119520] [2024-11-12 08:24:12,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:24:12,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:24:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:24:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:24:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:24:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492119520] [2024-11-12 08:24:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492119520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:24:13,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:24:13,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:24:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019614063] [2024-11-12 08:24:13,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:24:13,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:24:13,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:24:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:24:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:24:13,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-12 08:24:13,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 143 transitions, 999 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 08:24:13,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:24:13,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-12 08:24:13,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:24:21,995 INFO L124 PetriNetUnfolderBase]: 71442/111782 cut-off events. [2024-11-12 08:24:21,996 INFO L125 PetriNetUnfolderBase]: For 334728/339362 co-relation queries the response was YES. [2024-11-12 08:24:22,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363195 conditions, 111782 events. 71442/111782 cut-off events. For 334728/339362 co-relation queries the response was YES. Maximal size of possible extension queue 2160. Compared 881032 event pairs, 21316 based on Foata normal form. 1201/91593 useless extension candidates. Maximal degree in co-relation 363165. Up to 56391 conditions per place. [2024-11-12 08:24:23,451 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 163 selfloop transitions, 2 changer transitions 0/184 dead transitions. [2024-11-12 08:24:23,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 184 transitions, 1610 flow [2024-11-12 08:24:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:24:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:24:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-12 08:24:23,452 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6775956284153005 [2024-11-12 08:24:23,452 INFO L175 Difference]: Start difference. First operand has 105 places, 143 transitions, 999 flow. Second operand 3 states and 124 transitions. [2024-11-12 08:24:23,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 184 transitions, 1610 flow [2024-11-12 08:24:24,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 184 transitions, 1514 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-11-12 08:24:24,880 INFO L231 Difference]: Finished difference. Result has 97 places, 135 transitions, 866 flow [2024-11-12 08:24:24,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=866, PETRI_PLACES=97, PETRI_TRANSITIONS=135} [2024-11-12 08:24:24,881 INFO L279 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2024-11-12 08:24:24,882 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 135 transitions, 866 flow [2024-11-12 08:24:24,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 08:24:24,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:24:24,882 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 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 08:24:24,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 08:24:24,882 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 08:24:24,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:24:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1126665, now seen corresponding path program 1 times [2024-11-12 08:24:24,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:24:24,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742132442] [2024-11-12 08:24:24,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:24:24,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:24:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:24:24,912 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 08:24:24,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:24:24,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742132442] [2024-11-12 08:24:24,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742132442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:24:24,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:24:24,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:24:24,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576901377] [2024-11-12 08:24:24,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:24:24,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:24:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:24:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:24:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:24:24,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-11-12 08:24:24,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 135 transitions, 866 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 08:24:24,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:24:24,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-11-12 08:24:24,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand