./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:37:12,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:37:12,236 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:37:12,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:37:12,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:37:12,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:37:12,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:37:12,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:37:12,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:37:12,267 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:37:12,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:37:12,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:37:12,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:37:12,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:37:12,269 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:37:12,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:37:12,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:37:12,269 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:37:12,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:37:12,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:37:12,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:37:12,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:37:12,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:37:12,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:37:12,270 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:37:12,270 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:37:12,270 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:37:12,270 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:37:12,270 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:37:12,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:37:12,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:37:12,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:37:12,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:37:12,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:37:12,271 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:37:12,271 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:37:12,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:37:12,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:37:12,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:37:12,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:37:12,272 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:37:12,272 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:37:12,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:37:12,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:37:12,272 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:37:12,272 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:37:12,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:37:12,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:37:12,272 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 [2025-01-09 16:37:12,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:37:12,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:37:12,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:37:12,493 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:37:12,493 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:37:12,494 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2025-01-09 16:37:13,623 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91829aca8/4755dd34ae54498db08ea1bf0420c466/FLAG14869bf7b [2025-01-09 16:37:13,817 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:37:13,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2025-01-09 16:37:13,827 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91829aca8/4755dd34ae54498db08ea1bf0420c466/FLAG14869bf7b [2025-01-09 16:37:14,180 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/91829aca8/4755dd34ae54498db08ea1bf0420c466 [2025-01-09 16:37:14,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:37:14,183 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:37:14,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:37:14,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:37:14,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:37:14,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7956c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14, skipping insertion in model container [2025-01-09 16:37:14,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,200 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:37:14,300 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2703,2716] [2025-01-09 16:37:14,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:37:14,309 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:37:14,324 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c[2703,2716] [2025-01-09 16:37:14,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:37:14,333 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:37:14,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14 WrapperNode [2025-01-09 16:37:14,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:37:14,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:37:14,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:37:14,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:37:14,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,352 INFO L138 Inliner]: procedures = 21, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2025-01-09 16:37:14,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:37:14,353 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:37:14,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:37:14,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:37:14,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,368 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 16:37:14,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,371 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:37:14,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:37:14,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:37:14,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:37:14,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (1/1) ... [2025-01-09 16:37:14,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:37:14,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:14,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:37:14,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:37:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:37:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:37:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:37:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:37:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:37:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-09 16:37:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-09 16:37:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-01-09 16:37:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-01-09 16:37:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:37:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-01-09 16:37:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-01-09 16:37:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-01-09 16:37:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-01-09 16:37:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:37:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:37:14,419 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:37:14,492 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:37:14,494 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:37:14,678 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:37:14,678 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:37:14,782 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:37:14,782 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:37:14,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:37:14 BoogieIcfgContainer [2025-01-09 16:37:14,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:37:14,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:37:14,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:37:14,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:37:14,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:37:14" (1/3) ... [2025-01-09 16:37:14,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad6da8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:37:14, skipping insertion in model container [2025-01-09 16:37:14,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:14" (2/3) ... [2025-01-09 16:37:14,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad6da8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:37:14, skipping insertion in model container [2025-01-09 16:37:14,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:37:14" (3/3) ... [2025-01-09 16:37:14,789 INFO L128 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2025-01-09 16:37:14,798 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:37:14,799 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bench-exp3x3.wvr.c that has 7 procedures, 41 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-01-09 16:37:14,799 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:37:14,852 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-01-09 16:37:14,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2025-01-09 16:37:14,900 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2025-01-09 16:37:14,902 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-09 16:37:14,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 6/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-01-09 16:37:14,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2025-01-09 16:37:14,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2025-01-09 16:37:14,913 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:37:14,920 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;@2de67f06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:37:14,921 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-01-09 16:37:14,930 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:37:14,930 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2025-01-09 16:37:14,931 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-09 16:37:14,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:14,931 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:14,931 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 4 more)] === [2025-01-09 16:37:14,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:14,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1396819359, now seen corresponding path program 1 times [2025-01-09 16:37:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:14,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94919599] [2025-01-09 16:37:14,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:14,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:14,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 16:37:15,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 16:37:15,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:15,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:15,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:15,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94919599] [2025-01-09 16:37:15,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94919599] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:15,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:15,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:37:15,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661129340] [2025-01-09 16:37:15,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:15,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:37:15,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:15,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:37:15,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:37:15,392 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:15,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2025-01-09 16:37:15,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:15,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:15,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:16,591 INFO L124 PetriNetUnfolderBase]: 18895/21812 cut-off events. [2025-01-09 16:37:16,591 INFO L125 PetriNetUnfolderBase]: For 1449/1449 co-relation queries the response was YES. [2025-01-09 16:37:16,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44837 conditions, 21812 events. 18895/21812 cut-off events. For 1449/1449 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 69808 event pairs, 1570 based on Foata normal form. 1/11920 useless extension candidates. Maximal degree in co-relation 38647. Up to 20725 conditions per place. [2025-01-09 16:37:16,728 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 53 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2025-01-09 16:37:16,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2025-01-09 16:37:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:37:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:37:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-01-09 16:37:16,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2025-01-09 16:37:16,740 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 101 transitions. [2025-01-09 16:37:16,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2025-01-09 16:37:16,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-01-09 16:37:16,766 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 137 flow [2025-01-09 16:37:16,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2025-01-09 16:37:16,772 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2025-01-09 16:37:16,772 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 137 flow [2025-01-09 16:37:16,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2025-01-09 16:37:16,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:16,773 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:16,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:37:16,774 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 4 more)] === [2025-01-09 16:37:16,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:16,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1242304509, now seen corresponding path program 1 times [2025-01-09 16:37:16,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:16,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390919420] [2025-01-09 16:37:16,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:16,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:16,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 16:37:16,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:16,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:16,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:16,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:16,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390919420] [2025-01-09 16:37:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390919420] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:16,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:16,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:37:16,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236335853] [2025-01-09 16:37:16,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:16,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:37:16,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:16,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:37:16,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:37:16,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:16,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:16,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:16,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:16,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:18,214 INFO L124 PetriNetUnfolderBase]: 23813/27662 cut-off events. [2025-01-09 16:37:18,214 INFO L125 PetriNetUnfolderBase]: For 7845/7845 co-relation queries the response was YES. [2025-01-09 16:37:18,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68735 conditions, 27662 events. 23813/27662 cut-off events. For 7845/7845 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 96289 event pairs, 1824 based on Foata normal form. 390/27976 useless extension candidates. Maximal degree in co-relation 18912. Up to 12230 conditions per place. [2025-01-09 16:37:18,326 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 105 selfloop transitions, 10 changer transitions 0/122 dead transitions. [2025-01-09 16:37:18,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 122 transitions, 591 flow [2025-01-09 16:37:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2025-01-09 16:37:18,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2025-01-09 16:37:18,328 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 137 flow. Second operand 5 states and 170 transitions. [2025-01-09 16:37:18,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 122 transitions, 591 flow [2025-01-09 16:37:18,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 122 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:18,332 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 195 flow [2025-01-09 16:37:18,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2025-01-09 16:37:18,333 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2025-01-09 16:37:18,334 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 195 flow [2025-01-09 16:37:18,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:18,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:18,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:18,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:37:18,335 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 4 more)] === [2025-01-09 16:37:18,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1728009076, now seen corresponding path program 1 times [2025-01-09 16:37:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:18,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161973301] [2025-01-09 16:37:18,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:18,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 16:37:18,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:18,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:18,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:18,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:18,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161973301] [2025-01-09 16:37:18,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161973301] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:18,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931424160] [2025-01-09 16:37:18,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:18,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:18,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:18,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:37:18,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:37:18,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 16:37:18,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:18,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:18,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:18,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:18,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:18,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:18,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931424160] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:18,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:18,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-09 16:37:18,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776964319] [2025-01-09 16:37:18,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:18,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:37:18,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:18,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:37:18,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:37:18,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:18,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2025-01-09 16:37:18,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:18,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:18,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:20,196 INFO L124 PetriNetUnfolderBase]: 32023/37861 cut-off events. [2025-01-09 16:37:20,196 INFO L125 PetriNetUnfolderBase]: For 32644/32647 co-relation queries the response was YES. [2025-01-09 16:37:20,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109776 conditions, 37861 events. 32023/37861 cut-off events. For 32644/32647 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 148817 event pairs, 4757 based on Foata normal form. 768/38270 useless extension candidates. Maximal degree in co-relation 55569. Up to 18192 conditions per place. [2025-01-09 16:37:20,386 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 122 selfloop transitions, 8 changer transitions 0/137 dead transitions. [2025-01-09 16:37:20,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 137 transitions, 796 flow [2025-01-09 16:37:20,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2025-01-09 16:37:20,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7217391304347827 [2025-01-09 16:37:20,388 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 195 flow. Second operand 5 states and 166 transitions. [2025-01-09 16:37:20,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 137 transitions, 796 flow [2025-01-09 16:37:20,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 137 transitions, 796 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 16:37:20,395 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 250 flow [2025-01-09 16:37:20,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2025-01-09 16:37:20,396 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2025-01-09 16:37:20,396 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 250 flow [2025-01-09 16:37:20,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2025-01-09 16:37:20,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:20,396 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:20,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 16:37:20,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:20,600 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 4 more)] === [2025-01-09 16:37:20,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1107479440, now seen corresponding path program 1 times [2025-01-09 16:37:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:20,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389829845] [2025-01-09 16:37:20,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:20,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:20,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 16:37:20,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:20,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:20,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:20,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:20,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389829845] [2025-01-09 16:37:20,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389829845] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:20,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961283577] [2025-01-09 16:37:20,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:20,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:20,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:20,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:37:20,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:37:20,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 16:37:20,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:20,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:20,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:20,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:20,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:20,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:21,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961283577] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:21,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:21,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-09 16:37:21,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595059869] [2025-01-09 16:37:21,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:21,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:37:21,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:21,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:37:21,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:37:21,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:21,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2025-01-09 16:37:21,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:21,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:21,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:23,079 INFO L124 PetriNetUnfolderBase]: 43045/51823 cut-off events. [2025-01-09 16:37:23,079 INFO L125 PetriNetUnfolderBase]: For 85639/85690 co-relation queries the response was YES. [2025-01-09 16:37:23,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174616 conditions, 51823 events. 43045/51823 cut-off events. For 85639/85690 co-relation queries the response was YES. Maximal size of possible extension queue 1965. Compared 227583 event pairs, 7140 based on Foata normal form. 922/51730 useless extension candidates. Maximal degree in co-relation 91741. Up to 23370 conditions per place. [2025-01-09 16:37:23,315 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 132 selfloop transitions, 8 changer transitions 0/147 dead transitions. [2025-01-09 16:37:23,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 147 transitions, 982 flow [2025-01-09 16:37:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2025-01-09 16:37:23,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6782608695652174 [2025-01-09 16:37:23,317 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 250 flow. Second operand 5 states and 156 transitions. [2025-01-09 16:37:23,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 147 transitions, 982 flow [2025-01-09 16:37:23,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 147 transitions, 982 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 16:37:23,338 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 305 flow [2025-01-09 16:37:23,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2025-01-09 16:37:23,340 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2025-01-09 16:37:23,340 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 305 flow [2025-01-09 16:37:23,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2025-01-09 16:37:23,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:23,341 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:23,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 16:37:23,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:23,542 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 4 more)] === [2025-01-09 16:37:23,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:23,543 INFO L85 PathProgramCache]: Analyzing trace with hash 652708522, now seen corresponding path program 2 times [2025-01-09 16:37:23,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:23,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136783470] [2025-01-09 16:37:23,544 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:23,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:23,553 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:37:23,564 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:23,567 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:23,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:23,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:23,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136783470] [2025-01-09 16:37:23,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136783470] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:23,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:23,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:37:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852614985] [2025-01-09 16:37:23,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:23,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:37:23,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:23,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:37:23,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:37:23,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:23,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:23,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:23,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:23,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:25,832 INFO L124 PetriNetUnfolderBase]: 37477/44581 cut-off events. [2025-01-09 16:37:25,832 INFO L125 PetriNetUnfolderBase]: For 85550/85553 co-relation queries the response was YES. [2025-01-09 16:37:25,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168685 conditions, 44581 events. 37477/44581 cut-off events. For 85550/85553 co-relation queries the response was YES. Maximal size of possible extension queue 1654. Compared 183931 event pairs, 2400 based on Foata normal form. 554/45044 useless extension candidates. Maximal degree in co-relation 90814. Up to 20120 conditions per place. [2025-01-09 16:37:26,024 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 146 selfloop transitions, 11 changer transitions 0/164 dead transitions. [2025-01-09 16:37:26,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 164 transitions, 1140 flow [2025-01-09 16:37:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:26,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2025-01-09 16:37:26,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7086956521739131 [2025-01-09 16:37:26,025 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 305 flow. Second operand 5 states and 163 transitions. [2025-01-09 16:37:26,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 164 transitions, 1140 flow [2025-01-09 16:37:26,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 164 transitions, 1140 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 16:37:26,311 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 366 flow [2025-01-09 16:37:26,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2025-01-09 16:37:26,312 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2025-01-09 16:37:26,312 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 366 flow [2025-01-09 16:37:26,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:26,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:26,312 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:26,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:37:26,312 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 4 more)] === [2025-01-09 16:37:26,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:26,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2014587378, now seen corresponding path program 2 times [2025-01-09 16:37:26,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:26,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858148855] [2025-01-09 16:37:26,313 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:26,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:26,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:37:26,331 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:26,332 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:26,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:26,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858148855] [2025-01-09 16:37:26,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858148855] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:26,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:26,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:37:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698875114] [2025-01-09 16:37:26,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:26,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:37:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:26,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:37:26,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:37:26,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:26,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:26,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:26,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:26,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:28,173 INFO L124 PetriNetUnfolderBase]: 33621/40165 cut-off events. [2025-01-09 16:37:28,173 INFO L125 PetriNetUnfolderBase]: For 97958/98009 co-relation queries the response was YES. [2025-01-09 16:37:28,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160524 conditions, 40165 events. 33621/40165 cut-off events. For 97958/98009 co-relation queries the response was YES. Maximal size of possible extension queue 1474. Compared 163758 event pairs, 2108 based on Foata normal form. 398/39980 useless extension candidates. Maximal degree in co-relation 93096. Up to 17854 conditions per place. [2025-01-09 16:37:28,410 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 156 selfloop transitions, 11 changer transitions 0/174 dead transitions. [2025-01-09 16:37:28,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 174 transitions, 1347 flow [2025-01-09 16:37:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:28,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2025-01-09 16:37:28,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2025-01-09 16:37:28,411 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 366 flow. Second operand 5 states and 155 transitions. [2025-01-09 16:37:28,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 174 transitions, 1347 flow [2025-01-09 16:37:28,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 174 transitions, 1304 flow, removed 12 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:28,747 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 414 flow [2025-01-09 16:37:28,747 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=414, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2025-01-09 16:37:28,748 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2025-01-09 16:37:28,748 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 414 flow [2025-01-09 16:37:28,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:28,748 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:28,748 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:28,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 16:37:28,749 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 4 more)] === [2025-01-09 16:37:28,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:28,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1777720507, now seen corresponding path program 1 times [2025-01-09 16:37:28,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:28,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851086083] [2025-01-09 16:37:28,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:28,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:28,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 16:37:28,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:28,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:28,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:28,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:28,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851086083] [2025-01-09 16:37:28,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851086083] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:28,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:28,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:37:28,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073499702] [2025-01-09 16:37:28,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:28,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:37:28,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:28,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:37:28,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:37:28,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:28,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:28,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:28,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:28,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:30,891 INFO L124 PetriNetUnfolderBase]: 33105/39421 cut-off events. [2025-01-09 16:37:30,892 INFO L125 PetriNetUnfolderBase]: For 100388/100391 co-relation queries the response was YES. [2025-01-09 16:37:30,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164488 conditions, 39421 events. 33105/39421 cut-off events. For 100388/100391 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 162714 event pairs, 1617 based on Foata normal form. 516/39846 useless extension candidates. Maximal degree in co-relation 95216. Up to 17806 conditions per place. [2025-01-09 16:37:31,068 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 164 selfloop transitions, 8 changer transitions 0/179 dead transitions. [2025-01-09 16:37:31,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 179 transitions, 1379 flow [2025-01-09 16:37:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-01-09 16:37:31,069 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-01-09 16:37:31,069 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 414 flow. Second operand 5 states and 161 transitions. [2025-01-09 16:37:31,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 179 transitions, 1379 flow [2025-01-09 16:37:31,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 179 transitions, 1336 flow, removed 12 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:31,314 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 417 flow [2025-01-09 16:37:31,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2025-01-09 16:37:31,314 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2025-01-09 16:37:31,314 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 417 flow [2025-01-09 16:37:31,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:31,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:31,315 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:31,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:37:31,315 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 4 more)] === [2025-01-09 16:37:31,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash -480844685, now seen corresponding path program 1 times [2025-01-09 16:37:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855858789] [2025-01-09 16:37:31,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:31,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 16:37:31,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:31,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:31,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:31,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855858789] [2025-01-09 16:37:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855858789] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:31,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:31,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:37:31,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831128736] [2025-01-09 16:37:31,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:31,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:37:31,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:31,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:37:31,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:37:31,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:31,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:31,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:31,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:31,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:33,369 INFO L124 PetriNetUnfolderBase]: 32715/39247 cut-off events. [2025-01-09 16:37:33,369 INFO L125 PetriNetUnfolderBase]: For 110579/110630 co-relation queries the response was YES. [2025-01-09 16:37:33,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166452 conditions, 39247 events. 32715/39247 cut-off events. For 110579/110630 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 162548 event pairs, 1846 based on Foata normal form. 402/39114 useless extension candidates. Maximal degree in co-relation 105433. Up to 17433 conditions per place. [2025-01-09 16:37:33,566 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 154 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2025-01-09 16:37:33,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 169 transitions, 1357 flow [2025-01-09 16:37:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2025-01-09 16:37:33,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2025-01-09 16:37:33,567 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 417 flow. Second operand 5 states and 153 transitions. [2025-01-09 16:37:33,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 169 transitions, 1357 flow [2025-01-09 16:37:33,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 169 transitions, 1320 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:33,827 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 422 flow [2025-01-09 16:37:33,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2025-01-09 16:37:33,828 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2025-01-09 16:37:33,828 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 422 flow [2025-01-09 16:37:33,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:33,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:33,828 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:33,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 16:37:33,828 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 4 more)] === [2025-01-09 16:37:33,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:33,829 INFO L85 PathProgramCache]: Analyzing trace with hash 91177471, now seen corresponding path program 2 times [2025-01-09 16:37:33,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:33,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108351172] [2025-01-09 16:37:33,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:33,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:33,833 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:37:33,838 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:33,838 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:33,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:33,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:33,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108351172] [2025-01-09 16:37:33,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108351172] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:33,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238087023] [2025-01-09 16:37:33,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:33,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:33,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:33,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:37:33,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:37:33,947 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:37:33,967 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:33,967 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:33,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:33,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:33,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:34,251 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:34,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238087023] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:34,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:34,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-09 16:37:34,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491022679] [2025-01-09 16:37:34,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:34,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:37:34,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:34,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:37:34,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:37:34,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:34,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2025-01-09 16:37:34,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:34,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:34,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:36,305 INFO L124 PetriNetUnfolderBase]: 31943/38619 cut-off events. [2025-01-09 16:37:36,305 INFO L125 PetriNetUnfolderBase]: For 105747/105798 co-relation queries the response was YES. [2025-01-09 16:37:36,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166328 conditions, 38619 events. 31943/38619 cut-off events. For 105747/105798 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 166707 event pairs, 5456 based on Foata normal form. 784/38724 useless extension candidates. Maximal degree in co-relation 108226. Up to 19923 conditions per place. [2025-01-09 16:37:36,539 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 148 selfloop transitions, 8 changer transitions 0/163 dead transitions. [2025-01-09 16:37:36,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 163 transitions, 1297 flow [2025-01-09 16:37:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2025-01-09 16:37:36,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6565217391304348 [2025-01-09 16:37:36,540 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 422 flow. Second operand 5 states and 151 transitions. [2025-01-09 16:37:36,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 163 transitions, 1297 flow [2025-01-09 16:37:36,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 163 transitions, 1284 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:36,776 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 462 flow [2025-01-09 16:37:36,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2025-01-09 16:37:36,777 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2025-01-09 16:37:36,777 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 462 flow [2025-01-09 16:37:36,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2025-01-09 16:37:36,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:36,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:36,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 16:37:36,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:36,978 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 4 more)] === [2025-01-09 16:37:36,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1253788301, now seen corresponding path program 2 times [2025-01-09 16:37:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:36,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427177267] [2025-01-09 16:37:36,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:36,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:36,984 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:37:36,992 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:36,992 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:36,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:37,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:37,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427177267] [2025-01-09 16:37:37,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427177267] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:37,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291137562] [2025-01-09 16:37:37,049 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:37,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:37,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:37,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:37:37,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 16:37:37,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:37:37,111 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:37,111 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:37,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:37,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:37,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:37,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:37,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291137562] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:37,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:37,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-09 16:37:37,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717891229] [2025-01-09 16:37:37,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:37,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:37:37,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:37,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:37:37,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:37:37,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:37,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 462 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:37,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:37,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:37,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:39,399 INFO L124 PetriNetUnfolderBase]: 30959/37431 cut-off events. [2025-01-09 16:37:39,399 INFO L125 PetriNetUnfolderBase]: For 106334/106337 co-relation queries the response was YES. [2025-01-09 16:37:39,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167781 conditions, 37431 events. 30959/37431 cut-off events. For 106334/106337 co-relation queries the response was YES. Maximal size of possible extension queue 1362. Compared 161839 event pairs, 5914 based on Foata normal form. 984/38120 useless extension candidates. Maximal degree in co-relation 151006. Up to 20603 conditions per place. [2025-01-09 16:37:39,579 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 168 selfloop transitions, 8 changer transitions 0/183 dead transitions. [2025-01-09 16:37:39,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 183 transitions, 1525 flow [2025-01-09 16:37:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:39,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2025-01-09 16:37:39,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.691304347826087 [2025-01-09 16:37:39,583 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 462 flow. Second operand 5 states and 159 transitions. [2025-01-09 16:37:39,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 183 transitions, 1525 flow [2025-01-09 16:37:39,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 183 transitions, 1463 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-01-09 16:37:39,907 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 493 flow [2025-01-09 16:37:39,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=493, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2025-01-09 16:37:39,908 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2025-01-09 16:37:39,908 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 493 flow [2025-01-09 16:37:39,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:39,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:39,908 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:39,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 16:37:40,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-09 16:37:40,109 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:40,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:40,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1277245009, now seen corresponding path program 1 times [2025-01-09 16:37:40,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:40,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539644451] [2025-01-09 16:37:40,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:40,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 16:37:40,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:40,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:40,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:40,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:40,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539644451] [2025-01-09 16:37:40,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539644451] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:40,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844727139] [2025-01-09 16:37:40,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:40,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:40,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:40,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:37:40,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 16:37:40,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 16:37:40,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:40,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:40,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:40,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:40,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:40,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:40,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844727139] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:40,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:40,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-09 16:37:40,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696282339] [2025-01-09 16:37:40,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:40,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:37:40,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:40,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:37:40,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:37:40,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:40,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 493 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:40,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:40,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:40,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:42,838 INFO L124 PetriNetUnfolderBase]: 34557/42201 cut-off events. [2025-01-09 16:37:42,838 INFO L125 PetriNetUnfolderBase]: For 147704/147720 co-relation queries the response was YES. [2025-01-09 16:37:42,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196656 conditions, 42201 events. 34557/42201 cut-off events. For 147704/147720 co-relation queries the response was YES. Maximal size of possible extension queue 1537. Compared 196059 event pairs, 7642 based on Foata normal form. 984/42918 useless extension candidates. Maximal degree in co-relation 177798. Up to 19791 conditions per place. [2025-01-09 16:37:43,272 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 205 selfloop transitions, 10 changer transitions 0/222 dead transitions. [2025-01-09 16:37:43,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 222 transitions, 1885 flow [2025-01-09 16:37:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2025-01-09 16:37:43,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7652173913043478 [2025-01-09 16:37:43,273 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 493 flow. Second operand 5 states and 176 transitions. [2025-01-09 16:37:43,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 222 transitions, 1885 flow [2025-01-09 16:37:43,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 222 transitions, 1823 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-01-09 16:37:43,481 INFO L231 Difference]: Finished difference. Result has 92 places, 79 transitions, 529 flow [2025-01-09 16:37:43,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=529, PETRI_PLACES=92, PETRI_TRANSITIONS=79} [2025-01-09 16:37:43,482 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2025-01-09 16:37:43,482 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 79 transitions, 529 flow [2025-01-09 16:37:43,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:43,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:43,482 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:43,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 16:37:43,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-09 16:37:43,683 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:43,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:43,683 INFO L85 PathProgramCache]: Analyzing trace with hash 690862805, now seen corresponding path program 2 times [2025-01-09 16:37:43,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:43,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119134241] [2025-01-09 16:37:43,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:43,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:43,689 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:37:43,693 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:43,694 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:43,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:43,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:43,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119134241] [2025-01-09 16:37:43,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119134241] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:43,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:43,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:37:43,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615186062] [2025-01-09 16:37:43,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:43,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:37:43,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:43,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:37:43,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:37:43,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:43,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 79 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:43,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:43,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:43,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:45,717 INFO L124 PetriNetUnfolderBase]: 29565/35852 cut-off events. [2025-01-09 16:37:45,718 INFO L125 PetriNetUnfolderBase]: For 139224/139228 co-relation queries the response was YES. [2025-01-09 16:37:45,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172419 conditions, 35852 events. 29565/35852 cut-off events. For 139224/139228 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 157021 event pairs, 2545 based on Foata normal form. 419/36203 useless extension candidates. Maximal degree in co-relation 156260. Up to 16532 conditions per place. [2025-01-09 16:37:45,960 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 204 selfloop transitions, 9 changer transitions 0/220 dead transitions. [2025-01-09 16:37:45,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 220 transitions, 1878 flow [2025-01-09 16:37:45,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:37:45,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:37:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2025-01-09 16:37:45,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2025-01-09 16:37:45,961 INFO L175 Difference]: Start difference. First operand has 92 places, 79 transitions, 529 flow. Second operand 5 states and 170 transitions. [2025-01-09 16:37:45,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 220 transitions, 1878 flow [2025-01-09 16:37:46,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 220 transitions, 1869 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-01-09 16:37:46,369 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 533 flow [2025-01-09 16:37:46,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2025-01-09 16:37:46,369 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2025-01-09 16:37:46,369 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 533 flow [2025-01-09 16:37:46,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 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) [2025-01-09 16:37:46,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:46,369 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:46,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 16:37:46,370 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:37:46,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:46,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1316804811, now seen corresponding path program 2 times [2025-01-09 16:37:46,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:46,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893393983] [2025-01-09 16:37:46,370 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:46,375 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:37:46,379 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:46,380 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:46,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:46,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:46,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893393983] [2025-01-09 16:37:46,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893393983] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:46,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276834449] [2025-01-09 16:37:46,431 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:46,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:46,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:46,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:37:46,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 16:37:46,470 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:37:46,491 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:37:46,491 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:37:46,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:46,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:37:46,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:46,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:46,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276834449] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:37:46,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:37:46,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-01-09 16:37:46,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711600062] [2025-01-09 16:37:46,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:37:46,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:37:46,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:46,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:37:46,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:37:46,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-01-09 16:37:46,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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) [2025-01-09 16:37:46,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:46,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-01-09 16:37:46,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand