./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-figure3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-figure3.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 0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:50:18,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:50:18,520 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:50:18,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:50:18,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:50:18,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:50:18,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:50:18,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:50:18,547 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:50:18,547 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:50:18,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:50:18,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:50:18,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:50:18,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:50:18,550 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:50:18,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:50:18,550 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:50:18,551 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:50:18,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:50:18,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:50:18,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:50:18,560 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:50:18,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:50:18,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:50:18,561 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:50:18,562 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:50:18,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:50:18,562 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:50:18,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:50:18,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:50:18,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:50:18,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:50:18,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:50:18,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:50:18,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:50:18,565 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:50:18,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:50:18,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:50:18,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:50:18,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:50:18,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:50:18,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:50:18,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6 [2024-11-19 01:50:18,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:50:18,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:50:18,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:50:18,847 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:50:18,848 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:50:18,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-11-19 01:50:20,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:50:20,420 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:50:20,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-11-19 01:50:20,428 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071c347a6/46b0a50e70a44c539a5dd1922c0d02d5/FLAG1f3348926 [2024-11-19 01:50:20,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/071c347a6/46b0a50e70a44c539a5dd1922c0d02d5 [2024-11-19 01:50:20,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:50:20,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:50:20,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:50:20,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:50:20,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:50:20,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:50:20" (1/1) ... [2024-11-19 01:50:20,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@725c188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:20, skipping insertion in model container [2024-11-19 01:50:20,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:50:20" (1/1) ... [2024-11-19 01:50:20,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:50:21,057 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-figure3.wvr.c[1946,1959] [2024-11-19 01:50:21,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:50:21,071 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:50:21,093 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-figure3.wvr.c[1946,1959] [2024-11-19 01:50:21,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:50:21,119 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:50:21,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21 WrapperNode [2024-11-19 01:50:21,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:50:21,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:50:21,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:50:21,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:50:21,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,153 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2024-11-19 01:50:21,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:50:21,156 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:50:21,156 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:50:21,156 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:50:21,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,186 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 01:50:21,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,202 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:50:21,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:50:21,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:50:21,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:50:21,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (1/1) ... [2024-11-19 01:50:21,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:50:21,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:21,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:50:21,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:50:21,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:50:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:50:21,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:50:21,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:50:21,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:50:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:50:21,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:50:21,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:50:21,317 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:50:21,400 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:50:21,402 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:50:21,555 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:50:21,555 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:50:21,669 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:50:21,670 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 01:50:21,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:50:21 BoogieIcfgContainer [2024-11-19 01:50:21,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:50:21,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:50:21,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:50:21,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:50:21,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:50:20" (1/3) ... [2024-11-19 01:50:21,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711abe13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:50:21, skipping insertion in model container [2024-11-19 01:50:21,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:50:21" (2/3) ... [2024-11-19 01:50:21,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711abe13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:50:21, skipping insertion in model container [2024-11-19 01:50:21,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:50:21" (3/3) ... [2024-11-19 01:50:21,678 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2024-11-19 01:50:21,690 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:50:21,690 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:50:21,690 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:50:21,735 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:50:21,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-11-19 01:50:21,803 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-19 01:50:21,803 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:50:21,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-19 01:50:21,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-11-19 01:50:21,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-11-19 01:50:21,819 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:50:21,826 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;@49fc4862, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:50:21,826 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:50:21,846 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:50:21,846 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-19 01:50:21,847 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:50:21,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:21,848 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:21,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:21,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1255077345, now seen corresponding path program 1 times [2024-11-19 01:50:21,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:21,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468147915] [2024-11-19 01:50:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:21,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:22,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:22,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468147915] [2024-11-19 01:50:22,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468147915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:22,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:22,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:50:22,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501785118] [2024-11-19 01:50:22,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:22,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:50:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:22,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:50:22,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:50:22,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-19 01:50:22,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:22,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:22,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-19 01:50:22,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:22,416 INFO L124 PetriNetUnfolderBase]: 86/169 cut-off events. [2024-11-19 01:50:22,416 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-19 01:50:22,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 169 events. 86/169 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 499 event pairs, 32 based on Foata normal form. 1/162 useless extension candidates. Maximal degree in co-relation 298. Up to 108 conditions per place. [2024-11-19 01:50:22,420 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-19 01:50:22,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2024-11-19 01:50:22,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:50:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:50:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-11-19 01:50:22,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-19 01:50:22,434 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 3 states and 40 transitions. [2024-11-19 01:50:22,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2024-11-19 01:50:22,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:22,442 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-11-19 01:50:22,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-19 01:50:22,448 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2024-11-19 01:50:22,448 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-11-19 01:50:22,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:22,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:22,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:22,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:50:22,450 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:22,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash 930887173, now seen corresponding path program 1 times [2024-11-19 01:50:22,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:22,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037175360] [2024-11-19 01:50:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:22,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:22,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037175360] [2024-11-19 01:50:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037175360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:22,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:22,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:50:22,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074963602] [2024-11-19 01:50:22,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:22,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:22,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:22,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:22,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:22,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:22,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:22,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:22,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:22,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:22,854 INFO L124 PetriNetUnfolderBase]: 98/200 cut-off events. [2024-11-19 01:50:22,854 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-19 01:50:22,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 200 events. 98/200 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 744 event pairs, 45 based on Foata normal form. 2/184 useless extension candidates. Maximal degree in co-relation 155. Up to 133 conditions per place. [2024-11-19 01:50:22,859 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 28 selfloop transitions, 6 changer transitions 1/39 dead transitions. [2024-11-19 01:50:22,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 39 transitions, 170 flow [2024-11-19 01:50:22,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:50:22,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:50:22,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-11-19 01:50:22,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2024-11-19 01:50:22,861 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 61 transitions. [2024-11-19 01:50:22,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 39 transitions, 170 flow [2024-11-19 01:50:22,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 39 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:50:22,863 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 97 flow [2024-11-19 01:50:22,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-11-19 01:50:22,865 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2024-11-19 01:50:22,865 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 97 flow [2024-11-19 01:50:22,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:22,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:22,866 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:22,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:50:22,866 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:22,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:22,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1774096965, now seen corresponding path program 2 times [2024-11-19 01:50:22,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:22,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750228206] [2024-11-19 01:50:22,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:22,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:22,894 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:22,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:23,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750228206] [2024-11-19 01:50:23,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750228206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:23,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257998568] [2024-11-19 01:50:23,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:23,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:23,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:23,185 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) [2024-11-19 01:50:23,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:50:23,254 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:23,254 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:23,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:23,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:23,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:50:23,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257998568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:23,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:50:23,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-11-19 01:50:23,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675388231] [2024-11-19 01:50:23,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:23,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:23,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:23,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:23,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:50:23,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:23,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:23,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:23,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:23,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:23,506 INFO L124 PetriNetUnfolderBase]: 109/222 cut-off events. [2024-11-19 01:50:23,506 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-11-19 01:50:23,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 222 events. 109/222 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 836 event pairs, 4 based on Foata normal form. 7/213 useless extension candidates. Maximal degree in co-relation 406. Up to 94 conditions per place. [2024-11-19 01:50:23,510 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 38 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2024-11-19 01:50:23,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 269 flow [2024-11-19 01:50:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:23,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-11-19 01:50:23,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2024-11-19 01:50:23,512 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 97 flow. Second operand 7 states and 82 transitions. [2024-11-19 01:50:23,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 269 flow [2024-11-19 01:50:23,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 267 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 01:50:23,515 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 131 flow [2024-11-19 01:50:23,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-11-19 01:50:23,516 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2024-11-19 01:50:23,516 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 131 flow [2024-11-19 01:50:23,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:23,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:23,517 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:23,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:23,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:23,718 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:23,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1332688077, now seen corresponding path program 3 times [2024-11-19 01:50:23,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:23,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269091186] [2024-11-19 01:50:23,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:23,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:23,739 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:50:23,739 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:23,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269091186] [2024-11-19 01:50:23,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269091186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:23,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:23,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:50:23,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62584642] [2024-11-19 01:50:23,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:23,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:50:23,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:23,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:50:23,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:50:23,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:23,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:23,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:23,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:23,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:23,874 INFO L124 PetriNetUnfolderBase]: 149/302 cut-off events. [2024-11-19 01:50:23,874 INFO L125 PetriNetUnfolderBase]: For 449/451 co-relation queries the response was YES. [2024-11-19 01:50:23,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 302 events. 149/302 cut-off events. For 449/451 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1173 event pairs, 55 based on Foata normal form. 4/283 useless extension candidates. Maximal degree in co-relation 479. Up to 137 conditions per place. [2024-11-19 01:50:23,877 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 34 selfloop transitions, 7 changer transitions 1/46 dead transitions. [2024-11-19 01:50:23,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 304 flow [2024-11-19 01:50:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:50:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:50:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-11-19 01:50:23,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2024-11-19 01:50:23,879 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 131 flow. Second operand 4 states and 53 transitions. [2024-11-19 01:50:23,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 304 flow [2024-11-19 01:50:23,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 282 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:23,884 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 159 flow [2024-11-19 01:50:23,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2024-11-19 01:50:23,885 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2024-11-19 01:50:23,885 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 159 flow [2024-11-19 01:50:23,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:23,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:23,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:23,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:50:23,886 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:23,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:23,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2131557781, now seen corresponding path program 4 times [2024-11-19 01:50:23,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:23,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535829032] [2024-11-19 01:50:23,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:23,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:23,898 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:23,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:23,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:23,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535829032] [2024-11-19 01:50:23,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535829032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:23,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521557741] [2024-11-19 01:50:23,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:23,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:24,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:24,001 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) [2024-11-19 01:50:24,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:50:24,053 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:24,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:24,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:50:24,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:24,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:24,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521557741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:24,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:24,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 9 [2024-11-19 01:50:24,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677525043] [2024-11-19 01:50:24,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:24,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:50:24,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:50:24,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:50:24,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:24,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 159 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:24,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:24,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:24,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:24,519 INFO L124 PetriNetUnfolderBase]: 279/548 cut-off events. [2024-11-19 01:50:24,519 INFO L125 PetriNetUnfolderBase]: For 1063/1063 co-relation queries the response was YES. [2024-11-19 01:50:24,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 548 events. 279/548 cut-off events. For 1063/1063 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2593 event pairs, 33 based on Foata normal form. 13/559 useless extension candidates. Maximal degree in co-relation 954. Up to 175 conditions per place. [2024-11-19 01:50:24,524 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 48 selfloop transitions, 41 changer transitions 2/95 dead transitions. [2024-11-19 01:50:24,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 95 transitions, 675 flow [2024-11-19 01:50:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:50:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:50:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-11-19 01:50:24,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5174825174825175 [2024-11-19 01:50:24,529 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 159 flow. Second operand 13 states and 148 transitions. [2024-11-19 01:50:24,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 95 transitions, 675 flow [2024-11-19 01:50:24,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 95 transitions, 644 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-19 01:50:24,538 INFO L231 Difference]: Finished difference. Result has 57 places, 64 transitions, 518 flow [2024-11-19 01:50:24,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=518, PETRI_PLACES=57, PETRI_TRANSITIONS=64} [2024-11-19 01:50:24,540 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 33 predicate places. [2024-11-19 01:50:24,540 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 64 transitions, 518 flow [2024-11-19 01:50:24,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:24,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:24,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:24,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:50:24,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:24,742 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:24,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:24,743 INFO L85 PathProgramCache]: Analyzing trace with hash 69908399, now seen corresponding path program 5 times [2024-11-19 01:50:24,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:24,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490124608] [2024-11-19 01:50:24,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:24,759 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:24,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:24,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:24,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490124608] [2024-11-19 01:50:24,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490124608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:24,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:24,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:50:24,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305728939] [2024-11-19 01:50:24,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:24,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:50:24,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:50:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:50:24,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:24,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 64 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:24,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:24,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:24,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:24,947 INFO L124 PetriNetUnfolderBase]: 270/526 cut-off events. [2024-11-19 01:50:24,948 INFO L125 PetriNetUnfolderBase]: For 2814/2818 co-relation queries the response was YES. [2024-11-19 01:50:24,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 526 events. 270/526 cut-off events. For 2814/2818 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2402 event pairs, 65 based on Foata normal form. 9/532 useless extension candidates. Maximal degree in co-relation 1878. Up to 227 conditions per place. [2024-11-19 01:50:24,955 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 52 selfloop transitions, 24 changer transitions 1/81 dead transitions. [2024-11-19 01:50:24,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 783 flow [2024-11-19 01:50:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:50:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:50:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2024-11-19 01:50:24,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-19 01:50:24,957 INFO L175 Difference]: Start difference. First operand has 57 places, 64 transitions, 518 flow. Second operand 4 states and 52 transitions. [2024-11-19 01:50:24,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 783 flow [2024-11-19 01:50:24,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 718 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-11-19 01:50:24,967 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 535 flow [2024-11-19 01:50:24,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=535, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2024-11-19 01:50:24,968 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2024-11-19 01:50:24,968 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 535 flow [2024-11-19 01:50:24,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:24,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:24,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:24,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:50:24,969 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:24,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:24,969 INFO L85 PathProgramCache]: Analyzing trace with hash 190174668, now seen corresponding path program 1 times [2024-11-19 01:50:24,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:24,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220994816] [2024-11-19 01:50:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:24,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:25,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:25,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220994816] [2024-11-19 01:50:25,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220994816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:25,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566986038] [2024-11-19 01:50:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:25,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:25,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:25,085 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) [2024-11-19 01:50:25,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:50:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:25,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 01:50:25,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:50:25,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:50:25,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566986038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:25,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:25,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-11-19 01:50:25,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602737488] [2024-11-19 01:50:25,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:25,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:50:25,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:25,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:50:25,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:50:25,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 22 [2024-11-19 01:50:25,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 535 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:25,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:25,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 22 [2024-11-19 01:50:25,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:25,434 INFO L124 PetriNetUnfolderBase]: 564/1031 cut-off events. [2024-11-19 01:50:25,434 INFO L125 PetriNetUnfolderBase]: For 3996/4021 co-relation queries the response was YES. [2024-11-19 01:50:25,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 1031 events. 564/1031 cut-off events. For 3996/4021 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5053 event pairs, 90 based on Foata normal form. 12/1042 useless extension candidates. Maximal degree in co-relation 3413. Up to 487 conditions per place. [2024-11-19 01:50:25,445 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 97 selfloop transitions, 5 changer transitions 16/126 dead transitions. [2024-11-19 01:50:25,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 126 transitions, 1231 flow [2024-11-19 01:50:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:50:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:50:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-19 01:50:25,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-19 01:50:25,446 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 535 flow. Second operand 4 states and 60 transitions. [2024-11-19 01:50:25,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 126 transitions, 1231 flow [2024-11-19 01:50:25,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 126 transitions, 1129 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-19 01:50:25,457 INFO L231 Difference]: Finished difference. Result has 58 places, 65 transitions, 498 flow [2024-11-19 01:50:25,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=58, PETRI_TRANSITIONS=65} [2024-11-19 01:50:25,458 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 34 predicate places. [2024-11-19 01:50:25,458 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 498 flow [2024-11-19 01:50:25,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:25,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:25,459 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:25,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:25,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:25,663 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:25,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:25,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1980436368, now seen corresponding path program 2 times [2024-11-19 01:50:25,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:25,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158750881] [2024-11-19 01:50:25,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:25,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:25,686 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:25,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:25,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158750881] [2024-11-19 01:50:25,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158750881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:25,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970183657] [2024-11-19 01:50:25,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:25,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:25,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:25,857 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) [2024-11-19 01:50:25,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:50:25,906 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:25,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:25,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:50:25,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:25,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:26,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970183657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:26,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:26,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-19 01:50:26,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731577626] [2024-11-19 01:50:26,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:26,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:50:26,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:26,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:50:26,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:50:26,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:26,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 498 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:26,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:26,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:26,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:26,849 INFO L124 PetriNetUnfolderBase]: 861/1572 cut-off events. [2024-11-19 01:50:26,849 INFO L125 PetriNetUnfolderBase]: For 6065/6107 co-relation queries the response was YES. [2024-11-19 01:50:26,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 1572 events. 861/1572 cut-off events. For 6065/6107 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8201 event pairs, 65 based on Foata normal form. 56/1618 useless extension candidates. Maximal degree in co-relation 3453. Up to 386 conditions per place. [2024-11-19 01:50:26,863 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 82 selfloop transitions, 101 changer transitions 4/194 dead transitions. [2024-11-19 01:50:26,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 194 transitions, 1732 flow [2024-11-19 01:50:26,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 01:50:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 01:50:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 240 transitions. [2024-11-19 01:50:26,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49586776859504134 [2024-11-19 01:50:26,865 INFO L175 Difference]: Start difference. First operand has 58 places, 65 transitions, 498 flow. Second operand 22 states and 240 transitions. [2024-11-19 01:50:26,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 194 transitions, 1732 flow [2024-11-19 01:50:26,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 194 transitions, 1732 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:50:26,879 INFO L231 Difference]: Finished difference. Result has 88 places, 136 transitions, 1308 flow [2024-11-19 01:50:26,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1308, PETRI_PLACES=88, PETRI_TRANSITIONS=136} [2024-11-19 01:50:26,881 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 64 predicate places. [2024-11-19 01:50:26,881 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 136 transitions, 1308 flow [2024-11-19 01:50:26,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:26,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:26,882 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:26,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:27,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:27,087 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:27,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1344410538, now seen corresponding path program 3 times [2024-11-19 01:50:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:27,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603022776] [2024-11-19 01:50:27,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:27,108 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 01:50:27,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:27,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:27,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603022776] [2024-11-19 01:50:27,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603022776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:27,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971958024] [2024-11-19 01:50:27,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:27,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:27,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:27,329 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) [2024-11-19 01:50:27,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:50:27,382 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 01:50:27,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:27,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:50:27,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:27,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:27,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971958024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:27,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:27,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2024-11-19 01:50:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051956254] [2024-11-19 01:50:27,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:27,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 01:50:27,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:27,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 01:50:27,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-19 01:50:27,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:27,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 136 transitions, 1308 flow. Second operand has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:27,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:27,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:27,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:28,327 INFO L124 PetriNetUnfolderBase]: 913/1674 cut-off events. [2024-11-19 01:50:28,327 INFO L125 PetriNetUnfolderBase]: For 14504/14536 co-relation queries the response was YES. [2024-11-19 01:50:28,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 1674 events. 913/1674 cut-off events. For 14504/14536 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9062 event pairs, 130 based on Foata normal form. 36/1704 useless extension candidates. Maximal degree in co-relation 5077. Up to 725 conditions per place. [2024-11-19 01:50:28,345 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 120 selfloop transitions, 84 changer transitions 11/222 dead transitions. [2024-11-19 01:50:28,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 222 transitions, 2442 flow [2024-11-19 01:50:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 01:50:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 01:50:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 196 transitions. [2024-11-19 01:50:28,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-11-19 01:50:28,348 INFO L175 Difference]: Start difference. First operand has 88 places, 136 transitions, 1308 flow. Second operand 20 states and 196 transitions. [2024-11-19 01:50:28,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 222 transitions, 2442 flow [2024-11-19 01:50:28,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 222 transitions, 2303 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:28,377 INFO L231 Difference]: Finished difference. Result has 112 places, 165 transitions, 1780 flow [2024-11-19 01:50:28,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1780, PETRI_PLACES=112, PETRI_TRANSITIONS=165} [2024-11-19 01:50:28,377 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 88 predicate places. [2024-11-19 01:50:28,378 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 165 transitions, 1780 flow [2024-11-19 01:50:28,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:28,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:28,378 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:28,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:28,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:28,583 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:28,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:28,584 INFO L85 PathProgramCache]: Analyzing trace with hash -650354182, now seen corresponding path program 4 times [2024-11-19 01:50:28,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:28,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100480697] [2024-11-19 01:50:28,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:28,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:28,597 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:28,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:28,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:28,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100480697] [2024-11-19 01:50:28,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100480697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:28,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41900025] [2024-11-19 01:50:28,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:28,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:28,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:28,842 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) [2024-11-19 01:50:28,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:50:28,898 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:28,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:28,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:50:28,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:29,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:29,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41900025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:29,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:29,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2024-11-19 01:50:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064103503] [2024-11-19 01:50:29,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:29,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 01:50:29,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 01:50:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:50:29,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:29,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 165 transitions, 1780 flow. Second operand has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 17 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:29,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:29,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:29,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:30,284 INFO L124 PetriNetUnfolderBase]: 1250/2255 cut-off events. [2024-11-19 01:50:30,284 INFO L125 PetriNetUnfolderBase]: For 17533/17561 co-relation queries the response was YES. [2024-11-19 01:50:30,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12120 conditions, 2255 events. 1250/2255 cut-off events. For 17533/17561 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12815 event pairs, 29 based on Foata normal form. 56/2291 useless extension candidates. Maximal degree in co-relation 12004. Up to 551 conditions per place. [2024-11-19 01:50:30,313 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 111 selfloop transitions, 222 changer transitions 0/340 dead transitions. [2024-11-19 01:50:30,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 340 transitions, 4088 flow [2024-11-19 01:50:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 01:50:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 01:50:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 269 transitions. [2024-11-19 01:50:30,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47027972027972026 [2024-11-19 01:50:30,315 INFO L175 Difference]: Start difference. First operand has 112 places, 165 transitions, 1780 flow. Second operand 26 states and 269 transitions. [2024-11-19 01:50:30,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 340 transitions, 4088 flow [2024-11-19 01:50:30,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 340 transitions, 3889 flow, removed 91 selfloop flow, removed 5 redundant places. [2024-11-19 01:50:30,403 INFO L231 Difference]: Finished difference. Result has 142 places, 271 transitions, 3593 flow [2024-11-19 01:50:30,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3593, PETRI_PLACES=142, PETRI_TRANSITIONS=271} [2024-11-19 01:50:30,404 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 118 predicate places. [2024-11-19 01:50:30,404 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 271 transitions, 3593 flow [2024-11-19 01:50:30,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 17 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:30,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:30,405 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:30,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 01:50:30,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:30,609 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:30,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:30,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1066290816, now seen corresponding path program 5 times [2024-11-19 01:50:30,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:30,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282791631] [2024-11-19 01:50:30,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:30,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:30,622 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:30,624 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:30,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282791631] [2024-11-19 01:50:30,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282791631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522462233] [2024-11-19 01:50:30,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:30,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:30,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:30,749 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) [2024-11-19 01:50:30,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:50:30,802 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:30,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:30,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 01:50:30,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:30,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:31,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522462233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:31,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:31,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 01:50:31,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901178537] [2024-11-19 01:50:31,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:31,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:50:31,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:31,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:50:31,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:50:31,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:31,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 271 transitions, 3593 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:31,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:31,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:31,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:32,353 INFO L124 PetriNetUnfolderBase]: 1614/2958 cut-off events. [2024-11-19 01:50:32,354 INFO L125 PetriNetUnfolderBase]: For 30890/30914 co-relation queries the response was YES. [2024-11-19 01:50:32,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18541 conditions, 2958 events. 1614/2958 cut-off events. For 30890/30914 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17576 event pairs, 52 based on Foata normal form. 89/3027 useless extension candidates. Maximal degree in co-relation 18332. Up to 733 conditions per place. [2024-11-19 01:50:32,398 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 114 selfloop transitions, 344 changer transitions 0/465 dead transitions. [2024-11-19 01:50:32,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 465 transitions, 6794 flow [2024-11-19 01:50:32,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 01:50:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 01:50:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 282 transitions. [2024-11-19 01:50:32,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-11-19 01:50:32,400 INFO L175 Difference]: Start difference. First operand has 142 places, 271 transitions, 3593 flow. Second operand 28 states and 282 transitions. [2024-11-19 01:50:32,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 465 transitions, 6794 flow [2024-11-19 01:50:32,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 465 transitions, 6360 flow, removed 169 selfloop flow, removed 10 redundant places. [2024-11-19 01:50:32,554 INFO L231 Difference]: Finished difference. Result has 174 places, 390 transitions, 6040 flow [2024-11-19 01:50:32,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6040, PETRI_PLACES=174, PETRI_TRANSITIONS=390} [2024-11-19 01:50:32,556 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 150 predicate places. [2024-11-19 01:50:32,556 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 390 transitions, 6040 flow [2024-11-19 01:50:32,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:32,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:32,557 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:32,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:50:32,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:32,758 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:32,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash -804285242, now seen corresponding path program 6 times [2024-11-19 01:50:32,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:32,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308519712] [2024-11-19 01:50:32,758 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:32,772 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:50:32,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:32,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:32,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308519712] [2024-11-19 01:50:32,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308519712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:32,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573926849] [2024-11-19 01:50:32,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:32,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:32,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:32,965 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) [2024-11-19 01:50:33,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:50:33,066 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:50:33,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:33,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:50:33,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:33,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:33,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573926849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:33,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:33,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-19 01:50:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146908854] [2024-11-19 01:50:33,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:33,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:50:33,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:50:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:50:33,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:33,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 390 transitions, 6040 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:33,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:33,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:33,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:35,360 INFO L124 PetriNetUnfolderBase]: 2414/4330 cut-off events. [2024-11-19 01:50:35,360 INFO L125 PetriNetUnfolderBase]: For 60423/60453 co-relation queries the response was YES. [2024-11-19 01:50:35,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30797 conditions, 4330 events. 2414/4330 cut-off events. For 60423/60453 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 27040 event pairs, 74 based on Foata normal form. 102/4400 useless extension candidates. Maximal degree in co-relation 29926. Up to 1091 conditions per place. [2024-11-19 01:50:35,408 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 147 selfloop transitions, 594 changer transitions 4/752 dead transitions. [2024-11-19 01:50:35,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 752 transitions, 12999 flow [2024-11-19 01:50:35,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-19 01:50:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-19 01:50:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 429 transitions. [2024-11-19 01:50:35,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-11-19 01:50:35,411 INFO L175 Difference]: Start difference. First operand has 174 places, 390 transitions, 6040 flow. Second operand 41 states and 429 transitions. [2024-11-19 01:50:35,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 752 transitions, 12999 flow [2024-11-19 01:50:35,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 752 transitions, 12086 flow, removed 240 selfloop flow, removed 7 redundant places. [2024-11-19 01:50:35,710 INFO L231 Difference]: Finished difference. Result has 222 places, 660 transitions, 11559 flow [2024-11-19 01:50:35,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5553, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=11559, PETRI_PLACES=222, PETRI_TRANSITIONS=660} [2024-11-19 01:50:35,711 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 198 predicate places. [2024-11-19 01:50:35,712 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 660 transitions, 11559 flow [2024-11-19 01:50:35,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:35,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:35,712 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:35,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:35,912 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,SelfDestructingSolverStorable11 [2024-11-19 01:50:35,913 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:35,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1521188572, now seen corresponding path program 7 times [2024-11-19 01:50:35,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:35,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806362634] [2024-11-19 01:50:35,914 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:50:35,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:36,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:36,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806362634] [2024-11-19 01:50:36,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806362634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:36,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797799959] [2024-11-19 01:50:36,069 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:50:36,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:36,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:36,072 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) [2024-11-19 01:50:36,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:50:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:36,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:50:36,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:36,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:36,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797799959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:36,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:36,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-19 01:50:36,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326222194] [2024-11-19 01:50:36,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:36,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:50:36,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:36,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:50:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:50:36,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:36,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 660 transitions, 11559 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:36,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:36,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:36,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:37,743 INFO L124 PetriNetUnfolderBase]: 2771/4948 cut-off events. [2024-11-19 01:50:37,744 INFO L125 PetriNetUnfolderBase]: For 85655/85691 co-relation queries the response was YES. [2024-11-19 01:50:37,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38715 conditions, 4948 events. 2771/4948 cut-off events. For 85655/85691 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 30731 event pairs, 152 based on Foata normal form. 32/4932 useless extension candidates. Maximal degree in co-relation 37809. Up to 1260 conditions per place. [2024-11-19 01:50:37,791 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 212 selfloop transitions, 610 changer transitions 1/830 dead transitions. [2024-11-19 01:50:37,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 830 transitions, 15998 flow [2024-11-19 01:50:37,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 01:50:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 01:50:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 254 transitions. [2024-11-19 01:50:37,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5019762845849802 [2024-11-19 01:50:37,793 INFO L175 Difference]: Start difference. First operand has 222 places, 660 transitions, 11559 flow. Second operand 23 states and 254 transitions. [2024-11-19 01:50:37,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 830 transitions, 15998 flow [2024-11-19 01:50:38,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 830 transitions, 15123 flow, removed 393 selfloop flow, removed 6 redundant places. [2024-11-19 01:50:38,372 INFO L231 Difference]: Finished difference. Result has 240 places, 763 transitions, 13799 flow [2024-11-19 01:50:38,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=10796, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=506, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13799, PETRI_PLACES=240, PETRI_TRANSITIONS=763} [2024-11-19 01:50:38,373 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 216 predicate places. [2024-11-19 01:50:38,373 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 763 transitions, 13799 flow [2024-11-19 01:50:38,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:38,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:38,374 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:38,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 01:50:38,574 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,SelfDestructingSolverStorable12 [2024-11-19 01:50:38,575 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:38,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1008241726, now seen corresponding path program 8 times [2024-11-19 01:50:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:38,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429015314] [2024-11-19 01:50:38,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:38,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:38,590 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:38,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:38,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:38,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:38,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429015314] [2024-11-19 01:50:38,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429015314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:38,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384179300] [2024-11-19 01:50:38,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:38,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:38,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:38,727 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) [2024-11-19 01:50:38,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:50:38,776 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:38,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:38,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:50:38,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:38,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:38,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384179300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:38,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:38,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 01:50:38,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476493015] [2024-11-19 01:50:38,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:38,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:50:38,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:38,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:50:38,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:50:38,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:38,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 763 transitions, 13799 flow. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:38,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:38,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:38,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:41,341 INFO L124 PetriNetUnfolderBase]: 4076/7402 cut-off events. [2024-11-19 01:50:41,341 INFO L125 PetriNetUnfolderBase]: For 130231/130263 co-relation queries the response was YES. [2024-11-19 01:50:41,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57513 conditions, 7402 events. 4076/7402 cut-off events. For 130231/130263 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 49710 event pairs, 320 based on Foata normal form. 102/7456 useless extension candidates. Maximal degree in co-relation 57373. Up to 1705 conditions per place. [2024-11-19 01:50:41,422 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 374 selfloop transitions, 920 changer transitions 1/1302 dead transitions. [2024-11-19 01:50:41,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 1302 transitions, 25770 flow [2024-11-19 01:50:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-19 01:50:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-19 01:50:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 458 transitions. [2024-11-19 01:50:41,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44294003868471954 [2024-11-19 01:50:41,424 INFO L175 Difference]: Start difference. First operand has 240 places, 763 transitions, 13799 flow. Second operand 47 states and 458 transitions. [2024-11-19 01:50:41,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 1302 transitions, 25770 flow [2024-11-19 01:50:42,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1302 transitions, 25340 flow, removed 77 selfloop flow, removed 10 redundant places. [2024-11-19 01:50:42,369 INFO L231 Difference]: Finished difference. Result has 296 places, 1158 transitions, 24324 flow [2024-11-19 01:50:42,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=13373, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=538, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=24324, PETRI_PLACES=296, PETRI_TRANSITIONS=1158} [2024-11-19 01:50:42,370 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 272 predicate places. [2024-11-19 01:50:42,370 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 1158 transitions, 24324 flow [2024-11-19 01:50:42,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:42,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:42,371 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:42,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:42,571 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,SelfDestructingSolverStorable13 [2024-11-19 01:50:42,572 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:42,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:42,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1930697516, now seen corresponding path program 9 times [2024-11-19 01:50:42,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:42,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378064105] [2024-11-19 01:50:42,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:42,583 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:50:42,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:42,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378064105] [2024-11-19 01:50:42,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378064105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:42,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928685095] [2024-11-19 01:50:42,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:42,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:42,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:42,776 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) [2024-11-19 01:50:42,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:50:42,821 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:50:42,822 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:42,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:50:42,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:42,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:42,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928685095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:42,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:43,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2024-11-19 01:50:43,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709357104] [2024-11-19 01:50:43,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:43,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 01:50:43,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 01:50:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-19 01:50:43,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:43,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1158 transitions, 24324 flow. Second operand has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:43,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:43,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:43,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:47,973 INFO L124 PetriNetUnfolderBase]: 4598/8320 cut-off events. [2024-11-19 01:50:47,973 INFO L125 PetriNetUnfolderBase]: For 186196/186228 co-relation queries the response was YES. [2024-11-19 01:50:48,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71673 conditions, 8320 events. 4598/8320 cut-off events. For 186196/186228 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 56938 event pairs, 372 based on Foata normal form. 40/8310 useless extension candidates. Maximal degree in co-relation 71393. Up to 1923 conditions per place. [2024-11-19 01:50:48,196 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 259 selfloop transitions, 1114 changer transitions 5/1385 dead transitions. [2024-11-19 01:50:48,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1385 transitions, 31231 flow [2024-11-19 01:50:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-19 01:50:48,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-19 01:50:48,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 312 transitions. [2024-11-19 01:50:48,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-11-19 01:50:48,199 INFO L175 Difference]: Start difference. First operand has 296 places, 1158 transitions, 24324 flow. Second operand 32 states and 312 transitions. [2024-11-19 01:50:48,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1385 transitions, 31231 flow [2024-11-19 01:50:49,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1385 transitions, 30608 flow, removed 278 selfloop flow, removed 9 redundant places. [2024-11-19 01:50:49,646 INFO L231 Difference]: Finished difference. Result has 330 places, 1330 transitions, 31641 flow [2024-11-19 01:50:49,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=23733, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=943, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=31641, PETRI_PLACES=330, PETRI_TRANSITIONS=1330} [2024-11-19 01:50:49,648 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 306 predicate places. [2024-11-19 01:50:49,648 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 1330 transitions, 31641 flow [2024-11-19 01:50:49,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:49,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:49,649 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:49,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 01:50:49,849 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,SelfDestructingSolverStorable14 [2024-11-19 01:50:49,849 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:49,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:49,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1850756804, now seen corresponding path program 10 times [2024-11-19 01:50:49,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:49,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329337939] [2024-11-19 01:50:49,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:49,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:49,862 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:49,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:49,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:49,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329337939] [2024-11-19 01:50:49,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329337939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:49,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578348118] [2024-11-19 01:50:49,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:49,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:49,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:49,990 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) [2024-11-19 01:50:49,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:50:50,037 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:50,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:50,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:50:50,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:50,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:50,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578348118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:50,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:50,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 01:50:50,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894475102] [2024-11-19 01:50:50,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:50,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:50:50,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:50:50,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:50:50,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:50,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 1330 transitions, 31641 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:50,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:50,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:50,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:53,793 INFO L124 PetriNetUnfolderBase]: 4745/8567 cut-off events. [2024-11-19 01:50:53,793 INFO L125 PetriNetUnfolderBase]: For 230581/230615 co-relation queries the response was YES. [2024-11-19 01:50:53,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80897 conditions, 8567 events. 4745/8567 cut-off events. For 230581/230615 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 59140 event pairs, 620 based on Foata normal form. 18/8531 useless extension candidates. Maximal degree in co-relation 80600. Up to 3078 conditions per place. [2024-11-19 01:50:53,890 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 527 selfloop transitions, 870 changer transitions 4/1408 dead transitions. [2024-11-19 01:50:53,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1408 transitions, 35727 flow [2024-11-19 01:50:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 01:50:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 01:50:53,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 218 transitions. [2024-11-19 01:50:53,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45041322314049587 [2024-11-19 01:50:53,892 INFO L175 Difference]: Start difference. First operand has 330 places, 1330 transitions, 31641 flow. Second operand 22 states and 218 transitions. [2024-11-19 01:50:53,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1408 transitions, 35727 flow [2024-11-19 01:50:56,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1408 transitions, 35057 flow, removed 248 selfloop flow, removed 17 redundant places. [2024-11-19 01:50:56,290 INFO L231 Difference]: Finished difference. Result has 333 places, 1359 transitions, 33432 flow [2024-11-19 01:50:56,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=30935, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=836, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=33432, PETRI_PLACES=333, PETRI_TRANSITIONS=1359} [2024-11-19 01:50:56,291 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 309 predicate places. [2024-11-19 01:50:56,292 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 1359 transitions, 33432 flow [2024-11-19 01:50:56,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:56,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:56,292 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:56,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 01:50:56,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 01:50:56,493 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:50:56,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:56,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1709550660, now seen corresponding path program 11 times [2024-11-19 01:50:56,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:56,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478768794] [2024-11-19 01:50:56,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:56,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:56,509 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:50:56,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:56,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:56,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478768794] [2024-11-19 01:50:56,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478768794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:56,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346451801] [2024-11-19 01:50:56,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:56,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:56,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:56,657 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) [2024-11-19 01:50:56,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 01:50:56,713 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:50:56,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:56,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:50:56,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:56,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:56,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346451801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:56,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:56,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 01:50:56,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506663250] [2024-11-19 01:50:56,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:56,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:50:56,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:50:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:50:56,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:50:56,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1359 transitions, 33432 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:56,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:56,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:50:56,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:02,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:51:05,477 INFO L124 PetriNetUnfolderBase]: 6365/11522 cut-off events. [2024-11-19 01:51:05,477 INFO L125 PetriNetUnfolderBase]: For 320516/320560 co-relation queries the response was YES. [2024-11-19 01:51:05,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111271 conditions, 11522 events. 6365/11522 cut-off events. For 320516/320560 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 83537 event pairs, 733 based on Foata normal form. 100/11551 useless extension candidates. Maximal degree in co-relation 110782. Up to 3464 conditions per place. [2024-11-19 01:51:05,613 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 1072 selfloop transitions, 948 changer transitions 1/2028 dead transitions. [2024-11-19 01:51:05,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 2028 transitions, 53452 flow [2024-11-19 01:51:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-19 01:51:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-19 01:51:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 384 transitions. [2024-11-19 01:51:05,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-11-19 01:51:05,615 INFO L175 Difference]: Start difference. First operand has 333 places, 1359 transitions, 33432 flow. Second operand 38 states and 384 transitions. [2024-11-19 01:51:05,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 2028 transitions, 53452 flow [2024-11-19 01:51:10,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 2028 transitions, 52792 flow, removed 53 selfloop flow, removed 12 redundant places. [2024-11-19 01:51:10,183 INFO L231 Difference]: Finished difference. Result has 378 places, 1780 transitions, 47619 flow [2024-11-19 01:51:10,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=32921, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=47619, PETRI_PLACES=378, PETRI_TRANSITIONS=1780} [2024-11-19 01:51:10,185 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 354 predicate places. [2024-11-19 01:51:10,185 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 1780 transitions, 47619 flow [2024-11-19 01:51:10,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:51:10,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:10,186 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:10,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 01:51:10,390 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,SelfDestructingSolverStorable16 [2024-11-19 01:51:10,391 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:51:10,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2001842386, now seen corresponding path program 12 times [2024-11-19 01:51:10,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:10,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461698321] [2024-11-19 01:51:10,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:51:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:10,406 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 01:51:10,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:10,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461698321] [2024-11-19 01:51:10,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461698321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:10,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546288938] [2024-11-19 01:51:10,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:51:10,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:10,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:10,621 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:51:10,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 01:51:10,671 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 01:51:10,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:10,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:51:10,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:10,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:10,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546288938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:10,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:10,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-19 01:51:10,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057851446] [2024-11-19 01:51:10,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:10,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 01:51:10,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 01:51:10,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:51:10,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:51:10,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 1780 transitions, 47619 flow. Second operand has 17 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 17 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:51:10,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:10,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:51:10,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:15,897 INFO L124 PetriNetUnfolderBase]: 6402/11627 cut-off events. [2024-11-19 01:51:15,897 INFO L125 PetriNetUnfolderBase]: For 388636/388680 co-relation queries the response was YES. [2024-11-19 01:51:15,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119687 conditions, 11627 events. 6402/11627 cut-off events. For 388636/388680 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 84805 event pairs, 1751 based on Foata normal form. 10/11568 useless extension candidates. Maximal degree in co-relation 119186. Up to 8571 conditions per place. [2024-11-19 01:51:16,037 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 1611 selfloop transitions, 198 changer transitions 5/1821 dead transitions. [2024-11-19 01:51:16,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 1821 transitions, 52086 flow [2024-11-19 01:51:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:51:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:51:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2024-11-19 01:51:16,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4370629370629371 [2024-11-19 01:51:16,039 INFO L175 Difference]: Start difference. First operand has 378 places, 1780 transitions, 47619 flow. Second operand 13 states and 125 transitions. [2024-11-19 01:51:16,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 1821 transitions, 52086 flow [2024-11-19 01:51:21,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1821 transitions, 51619 flow, removed 169 selfloop flow, removed 3 redundant places. [2024-11-19 01:51:21,475 INFO L231 Difference]: Finished difference. Result has 393 places, 1791 transitions, 47965 flow [2024-11-19 01:51:21,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=47156, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=47965, PETRI_PLACES=393, PETRI_TRANSITIONS=1791} [2024-11-19 01:51:21,477 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 369 predicate places. [2024-11-19 01:51:21,477 INFO L471 AbstractCegarLoop]: Abstraction has has 393 places, 1791 transitions, 47965 flow [2024-11-19 01:51:21,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 17 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:51:21,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:21,478 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:21,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 01:51:21,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:21,678 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:51:21,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1022163140, now seen corresponding path program 13 times [2024-11-19 01:51:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:21,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318953203] [2024-11-19 01:51:21,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:51:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:21,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:21,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:21,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318953203] [2024-11-19 01:51:21,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318953203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:21,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687529938] [2024-11-19 01:51:21,782 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:51:21,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:21,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:21,784 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:51:21,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 01:51:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:21,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:51:21,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:21,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:21,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687529938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:21,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:21,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 01:51:21,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904149375] [2024-11-19 01:51:21,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:21,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:51:21,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:51:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:51:21,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:51:21,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 1791 transitions, 47965 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:51:21,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:21,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:51:21,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:27,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:51:34,813 INFO L124 PetriNetUnfolderBase]: 9857/17753 cut-off events. [2024-11-19 01:51:34,814 INFO L125 PetriNetUnfolderBase]: For 580602/580698 co-relation queries the response was YES. [2024-11-19 01:51:34,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184383 conditions, 17753 events. 9857/17753 cut-off events. For 580602/580698 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 136397 event pairs, 897 based on Foata normal form. 90/17720 useless extension candidates. Maximal degree in co-relation 183693. Up to 4643 conditions per place. [2024-11-19 01:51:35,265 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 942 selfloop transitions, 2011 changer transitions 3/2963 dead transitions. [2024-11-19 01:51:35,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 2963 transitions, 85536 flow [2024-11-19 01:51:35,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 01:51:35,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-19 01:51:35,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 326 transitions. [2024-11-19 01:51:35,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4780058651026393 [2024-11-19 01:51:35,267 INFO L175 Difference]: Start difference. First operand has 393 places, 1791 transitions, 47965 flow. Second operand 31 states and 326 transitions. [2024-11-19 01:51:35,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 2963 transitions, 85536 flow [2024-11-19 01:51:44,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 2963 transitions, 85250 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-19 01:51:44,544 INFO L231 Difference]: Finished difference. Result has 427 places, 2865 transitions, 85358 flow [2024-11-19 01:51:44,546 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=47646, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=85358, PETRI_PLACES=427, PETRI_TRANSITIONS=2865} [2024-11-19 01:51:44,547 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 403 predicate places. [2024-11-19 01:51:44,547 INFO L471 AbstractCegarLoop]: Abstraction has has 427 places, 2865 transitions, 85358 flow [2024-11-19 01:51:44,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:51:44,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:44,547 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:44,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 01:51:44,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:44,748 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:51:44,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:44,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1202183656, now seen corresponding path program 14 times [2024-11-19 01:51:44,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:44,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641210911] [2024-11-19 01:51:44,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:51:44,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:44,765 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:44,765 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:44,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:44,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641210911] [2024-11-19 01:51:44,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641210911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:44,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091670161] [2024-11-19 01:51:44,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:51:44,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:44,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:44,990 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:51:44,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 01:51:45,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:45,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:45,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:51:45,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:45,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:45,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091670161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:45,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:45,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-19 01:51:45,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973600664] [2024-11-19 01:51:45,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:45,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 01:51:45,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:45,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 01:51:45,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:51:45,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-19 01:51:45,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 2865 transitions, 85358 flow. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:51:45,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:45,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-19 01:51:45,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand