./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:49:59,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:49:59,178 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:49:59,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:49:59,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:49:59,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:49:59,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:49:59,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:49:59,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:49:59,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:49:59,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:49:59,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:49:59,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:49:59,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:49:59,213 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:49:59,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:49:59,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:49:59,214 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:49:59,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:49:59,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:49:59,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:49:59,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:49:59,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:49:59,215 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:49:59,215 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:49:59,215 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:49:59,215 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:49:59,215 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:49:59,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:49:59,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:49:59,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:49:59,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:49:59,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:49:59,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:49:59,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:49:59,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:49:59,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:49:59,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:49:59,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:49:59,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:49:59,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:49:59,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:49:59,220 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-09 02:49:59,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:49:59,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:49:59,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:49:59,466 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:49:59,467 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:49:59,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-09 02:50:00,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:50:00,993 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:50:00,994 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-09 02:50:01,003 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7059f7405/91b7dbbb8a384863b082697807f805e3/FLAG0d5685adc [2024-11-09 02:50:01,361 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7059f7405/91b7dbbb8a384863b082697807f805e3 [2024-11-09 02:50:01,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:50:01,364 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:50:01,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:50:01,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:50:01,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:50:01,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee63b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01, skipping insertion in model container [2024-11-09 02:50:01,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,392 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:50:01,584 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2429,2442] [2024-11-09 02:50:01,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:50:01,601 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:50:01,618 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2429,2442] [2024-11-09 02:50:01,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:50:01,636 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:50:01,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01 WrapperNode [2024-11-09 02:50:01,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:50:01,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:50:01,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:50:01,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:50:01,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,665 INFO L138 Inliner]: procedures = 23, calls = 20, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 109 [2024-11-09 02:50:01,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:50:01,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:50:01,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:50:01,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:50:01,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,689 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 02:50:01,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:50:01,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:50:01,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:50:01,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:50:01,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (1/1) ... [2024-11-09 02:50:01,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:50:01,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:01,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:50:01,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:50:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:50:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:50:01,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:50:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:50:01,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:50:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:50:01,785 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:50:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:50:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:50:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:50:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:50:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:50:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:50:01,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:50:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:50:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:50:01,788 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:50:01,912 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:50:01,914 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:50:02,150 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:50:02,151 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:50:02,325 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:50:02,325 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-09 02:50:02,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:50:02 BoogieIcfgContainer [2024-11-09 02:50:02,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:50:02,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:50:02,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:50:02,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:50:02,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:50:01" (1/3) ... [2024-11-09 02:50:02,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30018fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:50:02, skipping insertion in model container [2024-11-09 02:50:02,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:01" (2/3) ... [2024-11-09 02:50:02,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30018fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:50:02, skipping insertion in model container [2024-11-09 02:50:02,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:50:02" (3/3) ... [2024-11-09 02:50:02,334 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-09 02:50:02,348 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:50:02,348 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:50:02,349 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:50:02,394 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:50:02,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 41 transitions, 103 flow [2024-11-09 02:50:02,447 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-09 02:50:02,447 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:50:02,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 6/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2024-11-09 02:50:02,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 41 transitions, 103 flow [2024-11-09 02:50:02,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 37 transitions, 92 flow [2024-11-09 02:50:02,462 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:50:02,467 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;@7a07a63c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:50:02,467 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:50:02,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:50:02,477 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-09 02:50:02,477 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:50:02,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:02,478 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:02,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:02,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1288120486, now seen corresponding path program 1 times [2024-11-09 02:50:02,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:02,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294197681] [2024-11-09 02:50:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:02,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:03,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:03,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294197681] [2024-11-09 02:50:03,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294197681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:03,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:03,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:50:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766447220] [2024-11-09 02:50:03,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:03,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:50:03,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:03,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:50:03,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:50:03,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:03,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:03,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:03,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:03,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:03,492 INFO L124 PetriNetUnfolderBase]: 1212/1936 cut-off events. [2024-11-09 02:50:03,492 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-09 02:50:03,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3796 conditions, 1936 events. 1212/1936 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9894 event pairs, 782 based on Foata normal form. 1/1812 useless extension candidates. Maximal degree in co-relation 1838. Up to 1028 conditions per place. [2024-11-09 02:50:03,509 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 49 selfloop transitions, 5 changer transitions 1/63 dead transitions. [2024-11-09 02:50:03,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 272 flow [2024-11-09 02:50:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:50:03,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:50:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-09 02:50:03,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-09 02:50:03,522 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 92 flow. Second operand 4 states and 100 transitions. [2024-11-09 02:50:03,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 272 flow [2024-11-09 02:50:03,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 248 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:50:03,534 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 114 flow [2024-11-09 02:50:03,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2024-11-09 02:50:03,539 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-11-09 02:50:03,540 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 114 flow [2024-11-09 02:50:03,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:03,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:03,540 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:03,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:50:03,542 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:03,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:03,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1526085590, now seen corresponding path program 1 times [2024-11-09 02:50:03,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:03,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411690186] [2024-11-09 02:50:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:03,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:03,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:03,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411690186] [2024-11-09 02:50:03,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411690186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:03,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558703144] [2024-11-09 02:50:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:03,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:03,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:03,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:03,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:50:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:03,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:50:03,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:03,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:03,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558703144] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:03,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:50:03,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-09 02:50:03,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421306496] [2024-11-09 02:50:03,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:03,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:03,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:03,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:50:03,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-11-09 02:50:03,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:03,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:03,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-11-09 02:50:03,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:04,178 INFO L124 PetriNetUnfolderBase]: 2211/3639 cut-off events. [2024-11-09 02:50:04,178 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-11-09 02:50:04,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7270 conditions, 3639 events. 2211/3639 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21691 event pairs, 1590 based on Foata normal form. 0/3346 useless extension candidates. Maximal degree in co-relation 5571. Up to 1579 conditions per place. [2024-11-09 02:50:04,197 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 52 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2024-11-09 02:50:04,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 297 flow [2024-11-09 02:50:04,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:50:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:50:04,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-09 02:50:04,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5707317073170731 [2024-11-09 02:50:04,199 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 114 flow. Second operand 5 states and 117 transitions. [2024-11-09 02:50:04,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 297 flow [2024-11-09 02:50:04,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 290 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:50:04,201 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 138 flow [2024-11-09 02:50:04,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-09 02:50:04,202 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-11-09 02:50:04,202 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 138 flow [2024-11-09 02:50:04,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:04,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:04,203 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:04,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:50:04,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:04,408 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:04,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash 624112852, now seen corresponding path program 1 times [2024-11-09 02:50:04,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:04,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130169940] [2024-11-09 02:50:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:04,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:50:04,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:04,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130169940] [2024-11-09 02:50:04,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130169940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:04,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100362701] [2024-11-09 02:50:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:04,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:04,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:04,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:04,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:50:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:04,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:50:04,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:50:04,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:50:04,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100362701] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:04,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:50:04,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-09 02:50:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715835886] [2024-11-09 02:50:04,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:04,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:50:04,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:04,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:04,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:04,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:04,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:05,068 INFO L124 PetriNetUnfolderBase]: 2673/4235 cut-off events. [2024-11-09 02:50:05,068 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-11-09 02:50:05,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8467 conditions, 4235 events. 2673/4235 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24542 event pairs, 1002 based on Foata normal form. 0/3834 useless extension candidates. Maximal degree in co-relation 6912. Up to 1149 conditions per place. [2024-11-09 02:50:05,089 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 78 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2024-11-09 02:50:05,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 98 transitions, 440 flow [2024-11-09 02:50:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-11-09 02:50:05,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-09 02:50:05,094 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 138 flow. Second operand 6 states and 153 transitions. [2024-11-09 02:50:05,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 98 transitions, 440 flow [2024-11-09 02:50:05,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 98 transitions, 436 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:50:05,096 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 186 flow [2024-11-09 02:50:05,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-11-09 02:50:05,097 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-11-09 02:50:05,097 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 186 flow [2024-11-09 02:50:05,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:05,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:05,098 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:05,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 02:50:05,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 02:50:05,298 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:05,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash -688707375, now seen corresponding path program 1 times [2024-11-09 02:50:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:05,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901887024] [2024-11-09 02:50:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:05,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:05,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:05,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901887024] [2024-11-09 02:50:05,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901887024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:05,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:05,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:50:05,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497260769] [2024-11-09 02:50:05,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:05,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:05,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:05,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:05,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:50:05,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:05,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:05,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:05,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:05,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:05,629 INFO L124 PetriNetUnfolderBase]: 1759/2899 cut-off events. [2024-11-09 02:50:05,630 INFO L125 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2024-11-09 02:50:05,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6446 conditions, 2899 events. 1759/2899 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16181 event pairs, 1038 based on Foata normal form. 164/2829 useless extension candidates. Maximal degree in co-relation 3245. Up to 1233 conditions per place. [2024-11-09 02:50:05,643 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 61 selfloop transitions, 8 changer transitions 4/82 dead transitions. [2024-11-09 02:50:05,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 82 transitions, 404 flow [2024-11-09 02:50:05,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-11-09 02:50:05,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-11-09 02:50:05,646 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 186 flow. Second operand 6 states and 138 transitions. [2024-11-09 02:50:05,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 82 transitions, 404 flow [2024-11-09 02:50:05,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:50:05,650 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 180 flow [2024-11-09 02:50:05,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-11-09 02:50:05,651 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-11-09 02:50:05,652 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 180 flow [2024-11-09 02:50:05,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:05,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:05,652 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:05,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:50:05,653 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:05,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:05,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1695076916, now seen corresponding path program 1 times [2024-11-09 02:50:05,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:05,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437832569] [2024-11-09 02:50:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:05,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:05,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:05,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437832569] [2024-11-09 02:50:05,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437832569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:05,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:05,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:50:05,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349180527] [2024-11-09 02:50:05,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:05,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:50:05,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:50:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:50:05,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-09 02:50:05,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:05,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:05,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-09 02:50:05,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:05,963 INFO L124 PetriNetUnfolderBase]: 2362/3861 cut-off events. [2024-11-09 02:50:05,964 INFO L125 PetriNetUnfolderBase]: For 3292/3292 co-relation queries the response was YES. [2024-11-09 02:50:05,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9132 conditions, 3861 events. 2362/3861 cut-off events. For 3292/3292 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 20833 event pairs, 494 based on Foata normal form. 92/3938 useless extension candidates. Maximal degree in co-relation 4953. Up to 2248 conditions per place. [2024-11-09 02:50:05,990 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 65 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-11-09 02:50:05,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 448 flow [2024-11-09 02:50:05,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:50:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:50:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-09 02:50:05,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-09 02:50:05,994 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 180 flow. Second operand 4 states and 100 transitions. [2024-11-09 02:50:05,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 448 flow [2024-11-09 02:50:05,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 401 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-09 02:50:05,998 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 178 flow [2024-11-09 02:50:05,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-11-09 02:50:05,999 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-11-09 02:50:05,999 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 178 flow [2024-11-09 02:50:05,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:05,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:05,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:05,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:50:06,000 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:06,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:06,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1535561463, now seen corresponding path program 1 times [2024-11-09 02:50:06,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:06,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999867280] [2024-11-09 02:50:06,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:06,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:50:06,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:06,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999867280] [2024-11-09 02:50:06,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999867280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:06,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384454919] [2024-11-09 02:50:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:06,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:06,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:06,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:06,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:50:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:06,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:50:06,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:06,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:50:06,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:50:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384454919] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:06,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:50:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-09 02:50:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639651679] [2024-11-09 02:50:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:06,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:06,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:50:06,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:06,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:06,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:06,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:06,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:06,525 INFO L124 PetriNetUnfolderBase]: 2189/3559 cut-off events. [2024-11-09 02:50:06,525 INFO L125 PetriNetUnfolderBase]: For 1904/1904 co-relation queries the response was YES. [2024-11-09 02:50:06,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8453 conditions, 3559 events. 2189/3559 cut-off events. For 1904/1904 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 19454 event pairs, 607 based on Foata normal form. 0/3384 useless extension candidates. Maximal degree in co-relation 4798. Up to 1207 conditions per place. [2024-11-09 02:50:06,543 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 74 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2024-11-09 02:50:06,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 94 transitions, 482 flow [2024-11-09 02:50:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-11-09 02:50:06,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-11-09 02:50:06,544 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 178 flow. Second operand 6 states and 144 transitions. [2024-11-09 02:50:06,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 94 transitions, 482 flow [2024-11-09 02:50:06,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:50:06,547 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 215 flow [2024-11-09 02:50:06,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-11-09 02:50:06,548 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-11-09 02:50:06,548 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 215 flow [2024-11-09 02:50:06,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:06,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:06,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:06,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:50:06,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:06,750 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:06,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:06,750 INFO L85 PathProgramCache]: Analyzing trace with hash -485435232, now seen corresponding path program 1 times [2024-11-09 02:50:06,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:06,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438524444] [2024-11-09 02:50:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:06,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:06,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:06,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438524444] [2024-11-09 02:50:06,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438524444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:06,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:06,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:50:06,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959850159] [2024-11-09 02:50:06,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:06,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:50:06,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-09 02:50:06,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:06,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:06,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-09 02:50:06,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:07,260 INFO L124 PetriNetUnfolderBase]: 3274/5403 cut-off events. [2024-11-09 02:50:07,261 INFO L125 PetriNetUnfolderBase]: For 3676/3712 co-relation queries the response was YES. [2024-11-09 02:50:07,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13885 conditions, 5403 events. 3274/5403 cut-off events. For 3676/3712 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 32009 event pairs, 1121 based on Foata normal form. 128/5495 useless extension candidates. Maximal degree in co-relation 8024. Up to 2792 conditions per place. [2024-11-09 02:50:07,288 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 92 selfloop transitions, 15 changer transitions 0/118 dead transitions. [2024-11-09 02:50:07,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 118 transitions, 681 flow [2024-11-09 02:50:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-11-09 02:50:07,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2024-11-09 02:50:07,290 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 215 flow. Second operand 6 states and 147 transitions. [2024-11-09 02:50:07,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 118 transitions, 681 flow [2024-11-09 02:50:07,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 118 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:50:07,294 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 344 flow [2024-11-09 02:50:07,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-11-09 02:50:07,295 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-11-09 02:50:07,295 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 344 flow [2024-11-09 02:50:07,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:07,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:07,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:07,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:50:07,296 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:07,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash -734165712, now seen corresponding path program 2 times [2024-11-09 02:50:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:07,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545705653] [2024-11-09 02:50:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:07,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545705653] [2024-11-09 02:50:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545705653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:07,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:50:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010339875] [2024-11-09 02:50:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:07,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:50:07,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-09 02:50:07,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:07,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:07,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-09 02:50:07,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:07,899 INFO L124 PetriNetUnfolderBase]: 4199/6988 cut-off events. [2024-11-09 02:50:07,899 INFO L125 PetriNetUnfolderBase]: For 9510/9584 co-relation queries the response was YES. [2024-11-09 02:50:07,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20356 conditions, 6988 events. 4199/6988 cut-off events. For 9510/9584 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 42745 event pairs, 1417 based on Foata normal form. 140/7115 useless extension candidates. Maximal degree in co-relation 12852. Up to 2557 conditions per place. [2024-11-09 02:50:07,939 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 102 selfloop transitions, 13 changer transitions 1/127 dead transitions. [2024-11-09 02:50:07,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 127 transitions, 851 flow [2024-11-09 02:50:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:07,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-11-09 02:50:07,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-11-09 02:50:07,941 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 344 flow. Second operand 6 states and 144 transitions. [2024-11-09 02:50:07,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 127 transitions, 851 flow [2024-11-09 02:50:07,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 127 transitions, 849 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 02:50:07,953 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 442 flow [2024-11-09 02:50:07,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=442, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-09 02:50:07,954 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-11-09 02:50:07,954 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 442 flow [2024-11-09 02:50:07,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:07,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:07,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:07,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:50:07,955 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:07,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:07,955 INFO L85 PathProgramCache]: Analyzing trace with hash 209938992, now seen corresponding path program 3 times [2024-11-09 02:50:07,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:07,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72368577] [2024-11-09 02:50:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:07,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:08,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:08,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72368577] [2024-11-09 02:50:08,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72368577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:08,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:08,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:50:08,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482708674] [2024-11-09 02:50:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:08,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:08,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:50:08,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-11-09 02:50:08,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:08,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:08,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-11-09 02:50:08,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:08,563 INFO L124 PetriNetUnfolderBase]: 4453/7454 cut-off events. [2024-11-09 02:50:08,563 INFO L125 PetriNetUnfolderBase]: For 16083/16119 co-relation queries the response was YES. [2024-11-09 02:50:08,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22592 conditions, 7454 events. 4453/7454 cut-off events. For 16083/16119 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 44310 event pairs, 847 based on Foata normal form. 128/7549 useless extension candidates. Maximal degree in co-relation 14241. Up to 3136 conditions per place. [2024-11-09 02:50:08,603 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 91 selfloop transitions, 23 changer transitions 0/125 dead transitions. [2024-11-09 02:50:08,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 125 transitions, 885 flow [2024-11-09 02:50:08,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-09 02:50:08,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934959349593496 [2024-11-09 02:50:08,604 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 442 flow. Second operand 6 states and 146 transitions. [2024-11-09 02:50:08,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 125 transitions, 885 flow [2024-11-09 02:50:08,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 873 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:50:08,618 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 535 flow [2024-11-09 02:50:08,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-11-09 02:50:08,618 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-11-09 02:50:08,619 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 535 flow [2024-11-09 02:50:08,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:08,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:08,619 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:08,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:50:08,619 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:08,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1411449525, now seen corresponding path program 1 times [2024-11-09 02:50:08,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:08,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970923331] [2024-11-09 02:50:08,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:08,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:50:08,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:08,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970923331] [2024-11-09 02:50:08,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970923331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:08,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266311697] [2024-11-09 02:50:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:08,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:08,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:08,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:08,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:50:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:08,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:50:08,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:50:08,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:50:08,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266311697] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:08,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:50:08,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-09 02:50:08,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899192419] [2024-11-09 02:50:08,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:08,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:08,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:08,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:50:08,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:08,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 535 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:08,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:08,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:08,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:09,625 INFO L124 PetriNetUnfolderBase]: 4481/7629 cut-off events. [2024-11-09 02:50:09,625 INFO L125 PetriNetUnfolderBase]: For 18304/18304 co-relation queries the response was YES. [2024-11-09 02:50:09,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23468 conditions, 7629 events. 4481/7629 cut-off events. For 18304/18304 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 46864 event pairs, 1659 based on Foata normal form. 0/7293 useless extension candidates. Maximal degree in co-relation 13912. Up to 2324 conditions per place. [2024-11-09 02:50:09,724 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 87 selfloop transitions, 14 changer transitions 4/124 dead transitions. [2024-11-09 02:50:09,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 124 transitions, 1032 flow [2024-11-09 02:50:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-09 02:50:09,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934959349593496 [2024-11-09 02:50:09,725 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 535 flow. Second operand 6 states and 146 transitions. [2024-11-09 02:50:09,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 124 transitions, 1032 flow [2024-11-09 02:50:09,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 124 transitions, 976 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-09 02:50:09,752 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 618 flow [2024-11-09 02:50:09,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=618, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-11-09 02:50:09,753 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-11-09 02:50:09,753 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 618 flow [2024-11-09 02:50:09,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:09,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:09,754 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:09,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:50:09,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:09,955 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 1 more)] === [2024-11-09 02:50:09,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:09,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1426972774, now seen corresponding path program 4 times [2024-11-09 02:50:09,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:09,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142791584] [2024-11-09 02:50:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:50:10,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:10,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142791584] [2024-11-09 02:50:10,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142791584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:10,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:10,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:50:10,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859536637] [2024-11-09 02:50:10,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:10,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:10,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:10,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:10,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:50:10,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:10,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 618 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:10,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:10,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:10,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:10,374 INFO L124 PetriNetUnfolderBase]: 2351/3865 cut-off events. [2024-11-09 02:50:10,374 INFO L125 PetriNetUnfolderBase]: For 12262/12351 co-relation queries the response was YES. [2024-11-09 02:50:10,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13406 conditions, 3865 events. 2351/3865 cut-off events. For 12262/12351 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 19733 event pairs, 1668 based on Foata normal form. 41/3785 useless extension candidates. Maximal degree in co-relation 12657. Up to 3044 conditions per place. [2024-11-09 02:50:10,396 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 38 selfloop transitions, 4 changer transitions 24/83 dead transitions. [2024-11-09 02:50:10,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 83 transitions, 683 flow [2024-11-09 02:50:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-11-09 02:50:10,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-11-09 02:50:10,397 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 618 flow. Second operand 6 states and 120 transitions. [2024-11-09 02:50:10,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 83 transitions, 683 flow [2024-11-09 02:50:10,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 664 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-09 02:50:10,407 INFO L231 Difference]: Finished difference. Result has 91 places, 59 transitions, 410 flow [2024-11-09 02:50:10,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=91, PETRI_TRANSITIONS=59} [2024-11-09 02:50:10,408 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-11-09 02:50:10,408 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 59 transitions, 410 flow [2024-11-09 02:50:10,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:10,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:10,409 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:10,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:50:10,409 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 1 more)] === [2024-11-09 02:50:10,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:10,409 INFO L85 PathProgramCache]: Analyzing trace with hash -286070527, now seen corresponding path program 1 times [2024-11-09 02:50:10,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:10,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36895044] [2024-11-09 02:50:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:10,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:50:10,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:10,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36895044] [2024-11-09 02:50:10,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36895044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:10,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193734313] [2024-11-09 02:50:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:10,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:10,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:10,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:10,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:50:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:10,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:50:10,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:50:10,626 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:50:10,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193734313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:10,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:10,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:50:10,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688077232] [2024-11-09 02:50:10,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:10,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:50:10,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:10,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:50:10,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:50:10,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:10,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 59 transitions, 410 flow. Second operand has 14 states, 14 states have (on average 15.428571428571429) internal successors, (216), 14 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:10,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:10,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:10,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:11,309 INFO L124 PetriNetUnfolderBase]: 2870/4780 cut-off events. [2024-11-09 02:50:11,310 INFO L125 PetriNetUnfolderBase]: For 14807/14896 co-relation queries the response was YES. [2024-11-09 02:50:11,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16322 conditions, 4780 events. 2870/4780 cut-off events. For 14807/14896 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 26073 event pairs, 1783 based on Foata normal form. 54/4714 useless extension candidates. Maximal degree in co-relation 15557. Up to 3030 conditions per place. [2024-11-09 02:50:11,347 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 38 selfloop transitions, 6 changer transitions 50/111 dead transitions. [2024-11-09 02:50:11,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 914 flow [2024-11-09 02:50:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:50:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:50:11,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-11-09 02:50:11,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-11-09 02:50:11,349 INFO L175 Difference]: Start difference. First operand has 91 places, 59 transitions, 410 flow. Second operand 10 states and 188 transitions. [2024-11-09 02:50:11,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 914 flow [2024-11-09 02:50:11,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 111 transitions, 863 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-09 02:50:11,379 INFO L231 Difference]: Finished difference. Result has 90 places, 61 transitions, 433 flow [2024-11-09 02:50:11,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=433, PETRI_PLACES=90, PETRI_TRANSITIONS=61} [2024-11-09 02:50:11,380 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-11-09 02:50:11,380 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 61 transitions, 433 flow [2024-11-09 02:50:11,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.428571428571429) internal successors, (216), 14 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:11,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:11,381 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:11,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 02:50:11,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 02:50:11,586 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 1 more)] === [2024-11-09 02:50:11,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:11,586 INFO L85 PathProgramCache]: Analyzing trace with hash 599096713, now seen corresponding path program 2 times [2024-11-09 02:50:11,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:11,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434664948] [2024-11-09 02:50:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:11,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:50:11,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:11,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434664948] [2024-11-09 02:50:11,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434664948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110355646] [2024-11-09 02:50:11,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:50:11,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:11,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:11,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:11,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:50:11,824 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:50:11,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:11,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:50:11,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:50:11,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:50:12,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110355646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:12,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:12,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:50:12,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844488263] [2024-11-09 02:50:12,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:12,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:50:12,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:12,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:50:12,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:50:12,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:12,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 61 transitions, 433 flow. Second operand has 14 states, 14 states have (on average 14.714285714285714) internal successors, (206), 14 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:12,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:12,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:12,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:12,676 INFO L124 PetriNetUnfolderBase]: 3581/5802 cut-off events. [2024-11-09 02:50:12,676 INFO L125 PetriNetUnfolderBase]: For 18801/19043 co-relation queries the response was YES. [2024-11-09 02:50:12,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20288 conditions, 5802 events. 3581/5802 cut-off events. For 18801/19043 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 32997 event pairs, 945 based on Foata normal form. 145/5708 useless extension candidates. Maximal degree in co-relation 20232. Up to 1568 conditions per place. [2024-11-09 02:50:12,720 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 110 selfloop transitions, 11 changer transitions 0/138 dead transitions. [2024-11-09 02:50:12,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 138 transitions, 1334 flow [2024-11-09 02:50:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:50:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:50:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-11-09 02:50:12,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-11-09 02:50:12,724 INFO L175 Difference]: Start difference. First operand has 90 places, 61 transitions, 433 flow. Second operand 10 states and 191 transitions. [2024-11-09 02:50:12,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 138 transitions, 1334 flow [2024-11-09 02:50:12,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 138 transitions, 1262 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-11-09 02:50:12,745 INFO L231 Difference]: Finished difference. Result has 89 places, 64 transitions, 455 flow [2024-11-09 02:50:12,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=455, PETRI_PLACES=89, PETRI_TRANSITIONS=64} [2024-11-09 02:50:12,746 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-11-09 02:50:12,746 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 64 transitions, 455 flow [2024-11-09 02:50:12,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.714285714285714) internal successors, (206), 14 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:12,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:12,746 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:12,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 02:50:12,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:12,948 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:12,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:12,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1869448320, now seen corresponding path program 3 times [2024-11-09 02:50:12,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:12,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211539011] [2024-11-09 02:50:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:12,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 02:50:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211539011] [2024-11-09 02:50:13,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211539011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447505354] [2024-11-09 02:50:13,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:50:13,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:13,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:13,074 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:13,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:50:13,149 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:50:13,150 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:13,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:50:13,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 02:50:13,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 02:50:13,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447505354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:13,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:13,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:50:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703096734] [2024-11-09 02:50:13,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:13,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:50:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:50:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:50:13,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:13,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 64 transitions, 455 flow. Second operand has 14 states, 14 states have (on average 15.5) internal successors, (217), 14 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:13,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:13,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:13,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:14,048 INFO L124 PetriNetUnfolderBase]: 4784/7912 cut-off events. [2024-11-09 02:50:14,048 INFO L125 PetriNetUnfolderBase]: For 24716/24716 co-relation queries the response was YES. [2024-11-09 02:50:14,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27535 conditions, 7912 events. 4784/7912 cut-off events. For 24716/24716 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 46838 event pairs, 1140 based on Foata normal form. 86/7903 useless extension candidates. Maximal degree in co-relation 27480. Up to 2901 conditions per place. [2024-11-09 02:50:14,117 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 76 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2024-11-09 02:50:14,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 109 transitions, 885 flow [2024-11-09 02:50:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:50:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:50:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-11-09 02:50:14,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44878048780487806 [2024-11-09 02:50:14,119 INFO L175 Difference]: Start difference. First operand has 89 places, 64 transitions, 455 flow. Second operand 10 states and 184 transitions. [2024-11-09 02:50:14,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 109 transitions, 885 flow [2024-11-09 02:50:14,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 109 transitions, 874 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-09 02:50:14,144 INFO L231 Difference]: Finished difference. Result has 96 places, 66 transitions, 503 flow [2024-11-09 02:50:14,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=503, PETRI_PLACES=96, PETRI_TRANSITIONS=66} [2024-11-09 02:50:14,145 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2024-11-09 02:50:14,145 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 66 transitions, 503 flow [2024-11-09 02:50:14,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.5) internal successors, (217), 14 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:14,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:14,146 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:14,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 02:50:14,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:14,350 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:14,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1301990828, now seen corresponding path program 4 times [2024-11-09 02:50:14,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:14,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071671531] [2024-11-09 02:50:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:14,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 02:50:14,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:14,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071671531] [2024-11-09 02:50:14,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071671531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:14,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730020887] [2024-11-09 02:50:14,478 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:50:14,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:14,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:14,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:14,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:50:14,548 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:50:14,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:14,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:50:14,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 02:50:14,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 02:50:14,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730020887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:14,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:14,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 02:50:14,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341271817] [2024-11-09 02:50:14,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:14,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:50:14,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:14,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:50:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:50:14,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-11-09 02:50:14,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 66 transitions, 503 flow. Second operand has 13 states, 13 states have (on average 13.615384615384615) internal successors, (177), 13 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:14,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:14,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-11-09 02:50:14,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:16,617 INFO L124 PetriNetUnfolderBase]: 10681/17214 cut-off events. [2024-11-09 02:50:16,617 INFO L125 PetriNetUnfolderBase]: For 66251/66285 co-relation queries the response was YES. [2024-11-09 02:50:16,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61581 conditions, 17214 events. 10681/17214 cut-off events. For 66251/66285 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 113138 event pairs, 2503 based on Foata normal form. 634/17773 useless extension candidates. Maximal degree in co-relation 61524. Up to 5119 conditions per place. [2024-11-09 02:50:16,728 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 277 selfloop transitions, 51 changer transitions 10/349 dead transitions. [2024-11-09 02:50:16,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 349 transitions, 2902 flow [2024-11-09 02:50:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 02:50:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-09 02:50:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 484 transitions. [2024-11-09 02:50:16,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2024-11-09 02:50:16,731 INFO L175 Difference]: Start difference. First operand has 96 places, 66 transitions, 503 flow. Second operand 22 states and 484 transitions. [2024-11-09 02:50:16,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 349 transitions, 2902 flow [2024-11-09 02:50:16,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 349 transitions, 2847 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-09 02:50:16,773 INFO L231 Difference]: Finished difference. Result has 130 places, 108 transitions, 1043 flow [2024-11-09 02:50:16,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1043, PETRI_PLACES=130, PETRI_TRANSITIONS=108} [2024-11-09 02:50:16,773 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-11-09 02:50:16,774 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 108 transitions, 1043 flow [2024-11-09 02:50:16,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.615384615384615) internal successors, (177), 13 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:16,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:16,774 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:16,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 02:50:16,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 02:50:16,975 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:16,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:16,975 INFO L85 PathProgramCache]: Analyzing trace with hash 567751290, now seen corresponding path program 5 times [2024-11-09 02:50:16,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:16,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921694052] [2024-11-09 02:50:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:16,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 02:50:17,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:17,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921694052] [2024-11-09 02:50:17,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921694052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:17,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468167650] [2024-11-09 02:50:17,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:50:17,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:17,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:17,095 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:17,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 02:50:17,176 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 02:50:17,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:17,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:50:17,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 02:50:17,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 02:50:17,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468167650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:17,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:17,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-09 02:50:17,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503965039] [2024-11-09 02:50:17,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:17,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:50:17,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:17,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:50:17,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:50:17,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-11-09 02:50:17,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 108 transitions, 1043 flow. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:17,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:17,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-11-09 02:50:17,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:19,706 INFO L124 PetriNetUnfolderBase]: 11260/18278 cut-off events. [2024-11-09 02:50:19,707 INFO L125 PetriNetUnfolderBase]: For 208124/208226 co-relation queries the response was YES. [2024-11-09 02:50:19,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89617 conditions, 18278 events. 11260/18278 cut-off events. For 208124/208226 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 120540 event pairs, 1003 based on Foata normal form. 205/18402 useless extension candidates. Maximal degree in co-relation 89546. Up to 6429 conditions per place. [2024-11-09 02:50:19,839 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 190 selfloop transitions, 59 changer transitions 9/269 dead transitions. [2024-11-09 02:50:19,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 269 transitions, 2711 flow [2024-11-09 02:50:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:50:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:50:19,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 308 transitions. [2024-11-09 02:50:19,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2024-11-09 02:50:19,846 INFO L175 Difference]: Start difference. First operand has 130 places, 108 transitions, 1043 flow. Second operand 14 states and 308 transitions. [2024-11-09 02:50:19,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 269 transitions, 2711 flow [2024-11-09 02:50:20,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 269 transitions, 2615 flow, removed 48 selfloop flow, removed 0 redundant places. [2024-11-09 02:50:20,289 INFO L231 Difference]: Finished difference. Result has 150 places, 124 transitions, 1336 flow [2024-11-09 02:50:20,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1336, PETRI_PLACES=150, PETRI_TRANSITIONS=124} [2024-11-09 02:50:20,290 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-11-09 02:50:20,290 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 124 transitions, 1336 flow [2024-11-09 02:50:20,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 11 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:20,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:20,290 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:20,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 02:50:20,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 02:50:20,491 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:20,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash -237133430, now seen corresponding path program 6 times [2024-11-09 02:50:20,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:20,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527434762] [2024-11-09 02:50:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:20,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:50:20,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:20,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527434762] [2024-11-09 02:50:20,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527434762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:20,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404785481] [2024-11-09 02:50:20,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:50:20,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:20,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:20,626 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:20,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 02:50:20,709 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 02:50:20,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:20,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:50:20,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:50:20,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 02:50:20,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404785481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:20,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:20,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-09 02:50:20,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031935902] [2024-11-09 02:50:20,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:20,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:50:20,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:20,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:50:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:50:20,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:20,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 124 transitions, 1336 flow. Second operand has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 19 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:20,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:20,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:20,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:23,839 INFO L124 PetriNetUnfolderBase]: 12077/21307 cut-off events. [2024-11-09 02:50:23,839 INFO L125 PetriNetUnfolderBase]: For 228327/229048 co-relation queries the response was YES. [2024-11-09 02:50:24,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105177 conditions, 21307 events. 12077/21307 cut-off events. For 228327/229048 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 161550 event pairs, 6933 based on Foata normal form. 313/21059 useless extension candidates. Maximal degree in co-relation 95646. Up to 11274 conditions per place. [2024-11-09 02:50:24,089 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 68 selfloop transitions, 8 changer transitions 97/223 dead transitions. [2024-11-09 02:50:24,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 223 transitions, 2595 flow [2024-11-09 02:50:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:50:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:50:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 243 transitions. [2024-11-09 02:50:24,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45590994371482174 [2024-11-09 02:50:24,091 INFO L175 Difference]: Start difference. First operand has 150 places, 124 transitions, 1336 flow. Second operand 13 states and 243 transitions. [2024-11-09 02:50:24,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 223 transitions, 2595 flow [2024-11-09 02:50:24,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 223 transitions, 2518 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-11-09 02:50:24,778 INFO L231 Difference]: Finished difference. Result has 164 places, 126 transitions, 1364 flow [2024-11-09 02:50:24,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1364, PETRI_PLACES=164, PETRI_TRANSITIONS=126} [2024-11-09 02:50:24,779 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-11-09 02:50:24,779 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 126 transitions, 1364 flow [2024-11-09 02:50:24,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 19 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:24,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:24,780 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:24,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 02:50:24,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 02:50:24,981 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:24,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:24,981 INFO L85 PathProgramCache]: Analyzing trace with hash -243745768, now seen corresponding path program 7 times [2024-11-09 02:50:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:24,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022254809] [2024-11-09 02:50:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:24,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 02:50:25,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:25,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022254809] [2024-11-09 02:50:25,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022254809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:25,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413439872] [2024-11-09 02:50:25,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:50:25,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:25,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:25,237 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:25,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 02:50:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:25,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:50:25,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 02:50:25,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 02:50:25,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413439872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:25,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:25,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-09 02:50:25,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903433138] [2024-11-09 02:50:25,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:25,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:50:25,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:50:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:50:25,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:25,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 126 transitions, 1364 flow. Second operand has 19 states, 19 states have (on average 14.631578947368421) internal successors, (278), 19 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:25,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:25,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:25,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:28,404 INFO L124 PetriNetUnfolderBase]: 12025/18993 cut-off events. [2024-11-09 02:50:28,405 INFO L125 PetriNetUnfolderBase]: For 185539/188216 co-relation queries the response was YES. [2024-11-09 02:50:28,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88170 conditions, 18993 events. 12025/18993 cut-off events. For 185539/188216 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 131999 event pairs, 2313 based on Foata normal form. 509/18525 useless extension candidates. Maximal degree in co-relation 88074. Up to 4018 conditions per place. [2024-11-09 02:50:28,639 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 276 selfloop transitions, 14 changer transitions 0/339 dead transitions. [2024-11-09 02:50:28,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 339 transitions, 4764 flow [2024-11-09 02:50:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:50:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:50:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 243 transitions. [2024-11-09 02:50:28,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45590994371482174 [2024-11-09 02:50:28,641 INFO L175 Difference]: Start difference. First operand has 164 places, 126 transitions, 1364 flow. Second operand 13 states and 243 transitions. [2024-11-09 02:50:28,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 339 transitions, 4764 flow [2024-11-09 02:50:28,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 339 transitions, 4503 flow, removed 118 selfloop flow, removed 10 redundant places. [2024-11-09 02:50:28,852 INFO L231 Difference]: Finished difference. Result has 160 places, 128 transitions, 1344 flow [2024-11-09 02:50:28,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1344, PETRI_PLACES=160, PETRI_TRANSITIONS=128} [2024-11-09 02:50:28,853 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-11-09 02:50:28,853 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 128 transitions, 1344 flow [2024-11-09 02:50:28,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.631578947368421) internal successors, (278), 19 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:28,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:28,853 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:28,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 02:50:29,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 02:50:29,054 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:29,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash 255167643, now seen corresponding path program 8 times [2024-11-09 02:50:29,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:29,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603513943] [2024-11-09 02:50:29,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:29,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 02:50:29,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:29,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603513943] [2024-11-09 02:50:29,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603513943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:29,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485396168] [2024-11-09 02:50:29,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:50:29,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:29,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:29,209 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:29,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 02:50:29,304 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:50:29,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:29,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:50:29,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 02:50:29,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 02:50:29,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485396168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:29,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:29,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-09 02:50:29,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014451141] [2024-11-09 02:50:29,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:29,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:50:29,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:29,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:50:29,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:50:29,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-11-09 02:50:29,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 128 transitions, 1344 flow. Second operand has 19 states, 19 states have (on average 14.631578947368421) internal successors, (278), 19 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:29,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:29,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-11-09 02:50:29,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:33,196 INFO L124 PetriNetUnfolderBase]: 16367/26368 cut-off events. [2024-11-09 02:50:33,196 INFO L125 PetriNetUnfolderBase]: For 254814/255112 co-relation queries the response was YES. [2024-11-09 02:50:33,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128555 conditions, 26368 events. 16367/26368 cut-off events. For 254814/255112 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 178906 event pairs, 2311 based on Foata normal form. 237/26192 useless extension candidates. Maximal degree in co-relation 128465. Up to 7875 conditions per place. [2024-11-09 02:50:33,552 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 118 selfloop transitions, 27 changer transitions 1/196 dead transitions. [2024-11-09 02:50:33,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 196 transitions, 2146 flow [2024-11-09 02:50:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:50:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:50:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2024-11-09 02:50:33,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4371482176360225 [2024-11-09 02:50:33,554 INFO L175 Difference]: Start difference. First operand has 160 places, 128 transitions, 1344 flow. Second operand 13 states and 233 transitions. [2024-11-09 02:50:33,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 196 transitions, 2146 flow [2024-11-09 02:50:34,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 196 transitions, 2107 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-09 02:50:34,212 INFO L231 Difference]: Finished difference. Result has 166 places, 129 transitions, 1405 flow [2024-11-09 02:50:34,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1405, PETRI_PLACES=166, PETRI_TRANSITIONS=129} [2024-11-09 02:50:34,213 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-11-09 02:50:34,213 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 129 transitions, 1405 flow [2024-11-09 02:50:34,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.631578947368421) internal successors, (278), 19 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:34,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:34,214 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:34,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 02:50:34,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:34,414 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:34,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:34,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1964992131, now seen corresponding path program 9 times [2024-11-09 02:50:34,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:34,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706605849] [2024-11-09 02:50:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:34,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 02:50:34,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:34,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706605849] [2024-11-09 02:50:34,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706605849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:34,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170687891] [2024-11-09 02:50:34,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:50:34,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:34,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:34,733 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:34,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 02:50:34,814 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:50:34,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:34,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 02:50:34,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 02:50:34,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 02:50:34,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170687891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:34,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:34,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 13 [2024-11-09 02:50:34,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667136460] [2024-11-09 02:50:34,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:34,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:50:34,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:34,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:50:34,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:50:34,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-11-09 02:50:34,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 129 transitions, 1405 flow. Second operand has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:34,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:34,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-11-09 02:50:34,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:42,539 INFO L124 PetriNetUnfolderBase]: 36323/52820 cut-off events. [2024-11-09 02:50:42,540 INFO L125 PetriNetUnfolderBase]: For 508708/508960 co-relation queries the response was YES. [2024-11-09 02:50:43,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255234 conditions, 52820 events. 36323/52820 cut-off events. For 508708/508960 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 333626 event pairs, 427 based on Foata normal form. 527/53080 useless extension candidates. Maximal degree in co-relation 255143. Up to 7221 conditions per place. [2024-11-09 02:50:43,241 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 0 selfloop transitions, 0 changer transitions 1214/1214 dead transitions. [2024-11-09 02:50:43,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 1214 transitions, 12961 flow [2024-11-09 02:50:43,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-09 02:50:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2024-11-09 02:50:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 1456 transitions. [2024-11-09 02:50:43,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4330755502676978 [2024-11-09 02:50:43,244 INFO L175 Difference]: Start difference. First operand has 166 places, 129 transitions, 1405 flow. Second operand 82 states and 1456 transitions. [2024-11-09 02:50:43,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 1214 transitions, 12961 flow [2024-11-09 02:50:44,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 1214 transitions, 12778 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-09 02:50:44,445 INFO L231 Difference]: Finished difference. Result has 231 places, 0 transitions, 0 flow [2024-11-09 02:50:44,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=0, PETRI_PLACES=231, PETRI_TRANSITIONS=0} [2024-11-09 02:50:44,446 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-11-09 02:50:44,446 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 0 transitions, 0 flow [2024-11-09 02:50:44,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.538461538461538) internal successors, (176), 13 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:50:44,448 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-09 02:50:44,449 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-09 02:50:44,449 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-09 02:50:44,449 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-09 02:50:44,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 02:50:44,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-09 02:50:44,650 INFO L407 BasicCegarLoop]: Path program histogram: [9, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:44,653 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 02:50:44,653 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 02:50:44,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 02:50:44 BasicIcfg [2024-11-09 02:50:44,663 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 02:50:44,664 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 02:50:44,664 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 02:50:44,664 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 02:50:44,664 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:50:02" (3/4) ... [2024-11-09 02:50:44,666 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 02:50:44,669 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-09 02:50:44,670 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-09 02:50:44,670 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-09 02:50:44,679 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2024-11-09 02:50:44,680 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2024-11-09 02:50:44,680 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-09 02:50:44,680 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 02:50:44,761 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 02:50:44,762 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 02:50:44,762 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 02:50:44,762 INFO L158 Benchmark]: Toolchain (without parser) took 43398.40ms. Allocated memory was 209.7MB in the beginning and 12.2GB in the end (delta: 12.0GB). Free memory was 180.6MB in the beginning and 9.9GB in the end (delta: -9.7GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2024-11-09 02:50:44,762 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 148.9MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 02:50:44,763 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.88ms. Allocated memory is still 209.7MB. Free memory was 180.3MB in the beginning and 166.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 02:50:44,763 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.11ms. Allocated memory is still 209.7MB. Free memory was 166.6MB in the beginning and 164.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 02:50:44,763 INFO L158 Benchmark]: Boogie Preprocessor took 46.23ms. Allocated memory is still 209.7MB. Free memory was 164.5MB in the beginning and 162.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 02:50:44,763 INFO L158 Benchmark]: RCFGBuilder took 613.54ms. Allocated memory is still 209.7MB. Free memory was 162.4MB in the beginning and 120.5MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-09 02:50:44,763 INFO L158 Benchmark]: TraceAbstraction took 42335.61ms. Allocated memory was 209.7MB in the beginning and 12.2GB in the end (delta: 12.0GB). Free memory was 119.4MB in the beginning and 9.9GB in the end (delta: -9.8GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2024-11-09 02:50:44,764 INFO L158 Benchmark]: Witness Printer took 98.14ms. Allocated memory is still 12.2GB. Free memory was 9.9GB in the beginning and 9.9GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 02:50:44,765 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 148.9MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.88ms. Allocated memory is still 209.7MB. Free memory was 180.3MB in the beginning and 166.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.11ms. Allocated memory is still 209.7MB. Free memory was 166.6MB in the beginning and 164.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.23ms. Allocated memory is still 209.7MB. Free memory was 164.5MB in the beginning and 162.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 613.54ms. Allocated memory is still 209.7MB. Free memory was 162.4MB in the beginning and 120.5MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 42335.61ms. Allocated memory was 209.7MB in the beginning and 12.2GB in the end (delta: 12.0GB). Free memory was 119.4MB in the beginning and 9.9GB in the end (delta: -9.8GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. * Witness Printer took 98.14ms. Allocated memory is still 12.2GB. Free memory was 9.9GB in the beginning and 9.9GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 94]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 59 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 42.2s, OverallIterations: 20, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 33.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2432 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2329 mSDsluCounter, 186 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6954 IncrementalHoareTripleChecker+Invalid, 7077 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 32 mSDtfsCounter, 6954 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1489 GetRequests, 1171 SyntacticMatches, 25 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3887 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1405occurred in iteration=19, InterpolantAutomatonStates: 248, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1368 NumberOfCodeBlocks, 1331 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 1907 ConstructedInterpolants, 0 QuantifiedInterpolants, 6147 SizeOfPredicates, 39 NumberOfNonLiveVariables, 3173 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 46 InterpolantComputations, 11 PerfectInterpolantSequences, 696/944 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 02:50:44,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE