./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:36:03,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:36:03,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:36:03,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:36:03,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:36:03,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:36:03,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:36:03,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:36:03,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:36:03,816 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:36:03,816 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:36:03,816 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:36:03,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:36:03,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:36:03,818 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:36:03,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:36:03,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:36:03,820 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:36:03,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:36:03,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:36:03,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:36:03,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:36:03,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:36:03,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:36:03,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:36:03,822 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:36:03,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:36:03,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:36:03,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:36:03,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:36:03,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:36:03,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:36:03,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:36:03,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:36:03,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:36:03,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:36:03,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:36:03,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:36:03,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:36:03,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:36:03,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:36:03,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:36:03,826 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 [2024-10-11 14:36:04,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:36:04,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:36:04,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:36:04,085 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:36:04,086 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:36:04,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2024-10-11 14:36:05,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:36:05,604 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:36:05,605 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2024-10-11 14:36:05,611 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/73ffadcdc/663c808935394fb78d2da4d1a2bb9711/FLAG799287541 [2024-10-11 14:36:06,013 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/73ffadcdc/663c808935394fb78d2da4d1a2bb9711 [2024-10-11 14:36:06,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:36:06,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:36:06,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:36:06,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:36:06,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:36:06,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e09678f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06, skipping insertion in model container [2024-10-11 14:36:06,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,043 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:36:06,202 WARN L248 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-threaded-sum-3.wvr.c[2996,3009] [2024-10-11 14:36:06,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:36:06,213 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:36:06,231 WARN L248 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-threaded-sum-3.wvr.c[2996,3009] [2024-10-11 14:36:06,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:36:06,245 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:36:06,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06 WrapperNode [2024-10-11 14:36:06,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:36:06,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:36:06,247 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:36:06,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:36:06,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,285 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-10-11 14:36:06,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:36:06,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:36:06,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:36:06,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:36:06,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,305 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,316 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]. [2024-10-11 14:36:06,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:36:06,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:36:06,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:36:06,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:36:06,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (1/1) ... [2024-10-11 14:36:06,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:36:06,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:06,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:36:06,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:36:06,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:36:06,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:36:06,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:36:06,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:36:06,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:36:06,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:36:06,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:36:06,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:36:06,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:36:06,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:36:06,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:36:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:36:06,413 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:36:06,507 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:36:06,509 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:36:06,701 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:36:06,702 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:36:06,858 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:36:06,859 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 14:36:06,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:06 BoogieIcfgContainer [2024-10-11 14:36:06,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:36:06,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:36:06,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:36:06,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:36:06,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:36:06" (1/3) ... [2024-10-11 14:36:06,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0592ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:36:06, skipping insertion in model container [2024-10-11 14:36:06,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:36:06" (2/3) ... [2024-10-11 14:36:06,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0592ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:36:06, skipping insertion in model container [2024-10-11 14:36:06,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:36:06" (3/3) ... [2024-10-11 14:36:06,867 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2024-10-11 14:36:06,881 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:36:06,881 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:36:06,881 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:36:06,934 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:36:06,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 91 flow [2024-10-11 14:36:06,997 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2024-10-11 14:36:06,997 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:36:07,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 3/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-10-11 14:36:07,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 91 flow [2024-10-11 14:36:07,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 80 flow [2024-10-11 14:36:07,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:36:07,017 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;@2ce7e945, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:36:07,017 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:36:07,031 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:36:07,031 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2024-10-11 14:36:07,031 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:36:07,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:07,032 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:07,032 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:36:07,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:07,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1029020577, now seen corresponding path program 1 times [2024-10-11 14:36:07,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:07,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328016491] [2024-10-11 14:36:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:07,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:07,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:07,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328016491] [2024-10-11 14:36:07,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328016491] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:07,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:07,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:36:07,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404148807] [2024-10-11 14:36:07,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:07,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:36:07,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:07,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:36:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:36:07,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-10-11 14:36:07,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2024-10-11 14:36:07,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:07,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-10-11 14:36:07,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:07,971 INFO L124 PetriNetUnfolderBase]: 367/655 cut-off events. [2024-10-11 14:36:07,972 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-10-11 14:36:07,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 655 events. 367/655 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3347 event pairs, 26 based on Foata normal form. 20/660 useless extension candidates. Maximal degree in co-relation 1074. Up to 445 conditions per place. [2024-10-11 14:36:07,981 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 33 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-10-11 14:36:07,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 204 flow [2024-10-11 14:36:07,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:36:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:36:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-10-11 14:36:07,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-10-11 14:36:07,994 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 80 flow. Second operand 4 states and 95 transitions. [2024-10-11 14:36:07,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 204 flow [2024-10-11 14:36:07,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 14:36:08,001 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 100 flow [2024-10-11 14:36:08,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2024-10-11 14:36:08,006 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2024-10-11 14:36:08,006 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 100 flow [2024-10-11 14:36:08,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2024-10-11 14:36:08,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:08,007 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:08,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:36:08,008 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:36:08,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:08,009 INFO L85 PathProgramCache]: Analyzing trace with hash 631285081, now seen corresponding path program 1 times [2024-10-11 14:36:08,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:08,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020701888] [2024-10-11 14:36:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:08,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:08,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:08,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020701888] [2024-10-11 14:36:08,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020701888] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:08,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836347532] [2024-10-11 14:36:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:08,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:08,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:08,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:08,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:36:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:08,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 14:36:08,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:08,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:36:08,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836347532] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:08,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:36:08,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-10-11 14:36:08,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296254385] [2024-10-11 14:36:08,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:08,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:08,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:08,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:08,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:36:08,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-11 14:36:08,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2024-10-11 14:36:08,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:08,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-11 14:36:08,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:09,094 INFO L124 PetriNetUnfolderBase]: 1042/1669 cut-off events. [2024-10-11 14:36:09,095 INFO L125 PetriNetUnfolderBase]: For 412/448 co-relation queries the response was YES. [2024-10-11 14:36:09,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3716 conditions, 1669 events. 1042/1669 cut-off events. For 412/448 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8714 event pairs, 288 based on Foata normal form. 24/1665 useless extension candidates. Maximal degree in co-relation 2474. Up to 925 conditions per place. [2024-10-11 14:36:09,106 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 59 selfloop transitions, 20 changer transitions 0/87 dead transitions. [2024-10-11 14:36:09,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 87 transitions, 422 flow [2024-10-11 14:36:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-11 14:36:09,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6971428571428572 [2024-10-11 14:36:09,109 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 100 flow. Second operand 5 states and 122 transitions. [2024-10-11 14:36:09,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 87 transitions, 422 flow [2024-10-11 14:36:09,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 87 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:36:09,112 INFO L231 Difference]: Finished difference. Result has 44 places, 53 transitions, 256 flow [2024-10-11 14:36:09,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2024-10-11 14:36:09,113 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2024-10-11 14:36:09,113 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 256 flow [2024-10-11 14:36:09,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2024-10-11 14:36:09,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:09,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:09,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:36:09,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:09,318 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:36:09,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:09,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1270762887, now seen corresponding path program 2 times [2024-10-11 14:36:09,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:09,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392721099] [2024-10-11 14:36:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:09,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:36:09,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392721099] [2024-10-11 14:36:09,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392721099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:09,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:09,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:36:09,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017233757] [2024-10-11 14:36:09,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:09,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:36:09,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:09,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:36:09,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:36:09,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-10-11 14:36:09,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-10-11 14:36:09,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:09,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-10-11 14:36:09,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:09,776 INFO L124 PetriNetUnfolderBase]: 882/1459 cut-off events. [2024-10-11 14:36:09,776 INFO L125 PetriNetUnfolderBase]: For 1530/1609 co-relation queries the response was YES. [2024-10-11 14:36:09,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 1459 events. 882/1459 cut-off events. For 1530/1609 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7916 event pairs, 115 based on Foata normal form. 106/1463 useless extension candidates. Maximal degree in co-relation 2996. Up to 750 conditions per place. [2024-10-11 14:36:09,788 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 62 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2024-10-11 14:36:09,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 83 transitions, 541 flow [2024-10-11 14:36:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:36:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:36:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-11 14:36:09,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-10-11 14:36:09,791 INFO L175 Difference]: Start difference. First operand has 44 places, 53 transitions, 256 flow. Second operand 4 states and 93 transitions. [2024-10-11 14:36:09,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 83 transitions, 541 flow [2024-10-11 14:36:09,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 541 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:36:09,797 INFO L231 Difference]: Finished difference. Result has 48 places, 57 transitions, 302 flow [2024-10-11 14:36:09,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=48, PETRI_TRANSITIONS=57} [2024-10-11 14:36:09,798 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-10-11 14:36:09,798 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 57 transitions, 302 flow [2024-10-11 14:36:09,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-10-11 14:36:09,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:09,799 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:09,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:36:09,799 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:36:09,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:09,800 INFO L85 PathProgramCache]: Analyzing trace with hash -717394264, now seen corresponding path program 1 times [2024-10-11 14:36:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:09,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275327823] [2024-10-11 14:36:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:36:09,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:09,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275327823] [2024-10-11 14:36:09,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275327823] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:09,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:09,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:36:09,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324444283] [2024-10-11 14:36:09,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:09,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:36:09,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:36:09,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:36:10,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-10-11 14:36:10,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 57 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-11 14:36:10,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:10,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-10-11 14:36:10,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:10,206 INFO L124 PetriNetUnfolderBase]: 991/1645 cut-off events. [2024-10-11 14:36:10,206 INFO L125 PetriNetUnfolderBase]: For 1650/1800 co-relation queries the response was YES. [2024-10-11 14:36:10,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5247 conditions, 1645 events. 991/1645 cut-off events. For 1650/1800 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8849 event pairs, 156 based on Foata normal form. 144/1753 useless extension candidates. Maximal degree in co-relation 4128. Up to 1126 conditions per place. [2024-10-11 14:36:10,219 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 66 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-10-11 14:36:10,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 91 transitions, 608 flow [2024-10-11 14:36:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-11 14:36:10,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-10-11 14:36:10,221 INFO L175 Difference]: Start difference. First operand has 48 places, 57 transitions, 302 flow. Second operand 5 states and 120 transitions. [2024-10-11 14:36:10,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 91 transitions, 608 flow [2024-10-11 14:36:10,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 600 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:36:10,225 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 412 flow [2024-10-11 14:36:10,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2024-10-11 14:36:10,226 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2024-10-11 14:36:10,226 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 412 flow [2024-10-11 14:36:10,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-11 14:36:10,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:10,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:10,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:36:10,227 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:36:10,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:10,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1303098900, now seen corresponding path program 2 times [2024-10-11 14:36:10,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:10,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807155489] [2024-10-11 14:36:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:10,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:10,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:10,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807155489] [2024-10-11 14:36:10,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807155489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:10,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:10,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:36:10,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886830187] [2024-10-11 14:36:10,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:10,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:10,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:10,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:10,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:10,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-10-11 14:36:10,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-10-11 14:36:10,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:10,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-10-11 14:36:10,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:10,697 INFO L124 PetriNetUnfolderBase]: 1376/2269 cut-off events. [2024-10-11 14:36:10,698 INFO L125 PetriNetUnfolderBase]: For 3567/3817 co-relation queries the response was YES. [2024-10-11 14:36:10,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7623 conditions, 2269 events. 1376/2269 cut-off events. For 3567/3817 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 13463 event pairs, 252 based on Foata normal form. 242/2466 useless extension candidates. Maximal degree in co-relation 4550. Up to 1340 conditions per place. [2024-10-11 14:36:10,713 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 68 selfloop transitions, 20 changer transitions 0/101 dead transitions. [2024-10-11 14:36:10,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 101 transitions, 769 flow [2024-10-11 14:36:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-10-11 14:36:10,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6742857142857143 [2024-10-11 14:36:10,715 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 412 flow. Second operand 5 states and 118 transitions. [2024-10-11 14:36:10,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 101 transitions, 769 flow [2024-10-11 14:36:10,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 101 transitions, 758 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:36:10,726 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 469 flow [2024-10-11 14:36:10,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2024-10-11 14:36:10,726 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2024-10-11 14:36:10,727 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 469 flow [2024-10-11 14:36:10,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-10-11 14:36:10,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:10,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:10,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:36:10,727 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:36:10,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:10,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1954223470, now seen corresponding path program 3 times [2024-10-11 14:36:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924267450] [2024-10-11 14:36:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:10,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:10,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924267450] [2024-10-11 14:36:10,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924267450] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:36:10,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:36:10,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:36:10,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882931272] [2024-10-11 14:36:10,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:10,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:36:10,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:10,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:36:10,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:36:10,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-10-11 14:36:10,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-10-11 14:36:10,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:10,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-10-11 14:36:10,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:11,228 INFO L124 PetriNetUnfolderBase]: 1629/2634 cut-off events. [2024-10-11 14:36:11,229 INFO L125 PetriNetUnfolderBase]: For 4694/5076 co-relation queries the response was YES. [2024-10-11 14:36:11,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9282 conditions, 2634 events. 1629/2634 cut-off events. For 4694/5076 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 15412 event pairs, 174 based on Foata normal form. 225/2780 useless extension candidates. Maximal degree in co-relation 4753. Up to 1485 conditions per place. [2024-10-11 14:36:11,248 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 83 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2024-10-11 14:36:11,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 113 transitions, 891 flow [2024-10-11 14:36:11,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:36:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:36:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-11 14:36:11,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-10-11 14:36:11,250 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 469 flow. Second operand 5 states and 126 transitions. [2024-10-11 14:36:11,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 113 transitions, 891 flow [2024-10-11 14:36:11,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 113 transitions, 859 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:36:11,257 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 552 flow [2024-10-11 14:36:11,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2024-10-11 14:36:11,258 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2024-10-11 14:36:11,258 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 552 flow [2024-10-11 14:36:11,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-10-11 14:36:11,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:11,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:11,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:36:11,259 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:36:11,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2054220922, now seen corresponding path program 1 times [2024-10-11 14:36:11,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:11,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320164127] [2024-10-11 14:36:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:11,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:11,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320164127] [2024-10-11 14:36:11,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320164127] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:11,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242544623] [2024-10-11 14:36:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:11,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:11,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:11,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:11,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:36:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:11,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 14:36:11,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:11,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:11,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242544623] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:11,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 14:36:11,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 18 [2024-10-11 14:36:11,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851829762] [2024-10-11 14:36:11,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:36:11,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:36:11,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:11,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:36:11,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:36:11,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-10-11 14:36:11,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 552 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:11,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:11,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-10-11 14:36:11,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:12,899 INFO L124 PetriNetUnfolderBase]: 6100/9215 cut-off events. [2024-10-11 14:36:12,900 INFO L125 PetriNetUnfolderBase]: For 20887/21688 co-relation queries the response was YES. [2024-10-11 14:36:12,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33774 conditions, 9215 events. 6100/9215 cut-off events. For 20887/21688 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 57201 event pairs, 499 based on Foata normal form. 322/9486 useless extension candidates. Maximal degree in co-relation 18817. Up to 3086 conditions per place. [2024-10-11 14:36:12,952 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 147 selfloop transitions, 80 changer transitions 0/234 dead transitions. [2024-10-11 14:36:12,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 234 transitions, 2099 flow [2024-10-11 14:36:12,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:36:12,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:36:12,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-10-11 14:36:12,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6028571428571429 [2024-10-11 14:36:12,956 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 552 flow. Second operand 10 states and 211 transitions. [2024-10-11 14:36:12,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 234 transitions, 2099 flow [2024-10-11 14:36:12,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 234 transitions, 2084 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:36:12,988 INFO L231 Difference]: Finished difference. Result has 78 places, 149 transitions, 1539 flow [2024-10-11 14:36:12,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1539, PETRI_PLACES=78, PETRI_TRANSITIONS=149} [2024-10-11 14:36:12,989 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2024-10-11 14:36:12,989 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 149 transitions, 1539 flow [2024-10-11 14:36:12,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:36:12,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:12,989 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:13,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:13,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:13,194 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:36:13,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1263224652, now seen corresponding path program 2 times [2024-10-11 14:36:13,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:13,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063463866] [2024-10-11 14:36:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:13,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:13,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:13,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063463866] [2024-10-11 14:36:13,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063463866] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:13,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198726866] [2024-10-11 14:36:13,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:36:13,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:13,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:13,365 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:13,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:36:13,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:36:13,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:13,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 14:36:13,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:13,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:13,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198726866] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:13,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:13,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 5] total 9 [2024-10-11 14:36:13,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193908225] [2024-10-11 14:36:13,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:13,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 14:36:13,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:13,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 14:36:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:36:13,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-11 14:36:13,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 149 transitions, 1539 flow. Second operand has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 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) [2024-10-11 14:36:13,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:13,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-11 14:36:13,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:14,911 INFO L124 PetriNetUnfolderBase]: 6472/10261 cut-off events. [2024-10-11 14:36:14,912 INFO L125 PetriNetUnfolderBase]: For 52693/53816 co-relation queries the response was YES. [2024-10-11 14:36:14,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47840 conditions, 10261 events. 6472/10261 cut-off events. For 52693/53816 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 69865 event pairs, 677 based on Foata normal form. 491/10637 useless extension candidates. Maximal degree in co-relation 32336. Up to 2557 conditions per place. [2024-10-11 14:36:15,008 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 169 selfloop transitions, 59 changer transitions 0/251 dead transitions. [2024-10-11 14:36:15,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 251 transitions, 2830 flow [2024-10-11 14:36:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:36:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:36:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-10-11 14:36:15,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-10-11 14:36:15,010 INFO L175 Difference]: Start difference. First operand has 78 places, 149 transitions, 1539 flow. Second operand 7 states and 161 transitions. [2024-10-11 14:36:15,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 251 transitions, 2830 flow [2024-10-11 14:36:15,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 251 transitions, 2766 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-10-11 14:36:15,141 INFO L231 Difference]: Finished difference. Result has 87 places, 170 transitions, 1937 flow [2024-10-11 14:36:15,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1937, PETRI_PLACES=87, PETRI_TRANSITIONS=170} [2024-10-11 14:36:15,142 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 49 predicate places. [2024-10-11 14:36:15,142 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 170 transitions, 1937 flow [2024-10-11 14:36:15,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 10 states have internal predecessors, (171), 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) [2024-10-11 14:36:15,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:36:15,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:36:15,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 14:36:15,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:15,344 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:36:15,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:36:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash 547899612, now seen corresponding path program 3 times [2024-10-11 14:36:15,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:36:15,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407991153] [2024-10-11 14:36:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:36:15,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:36:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:36:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:18,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:36:18,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407991153] [2024-10-11 14:36:18,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407991153] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:36:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565872683] [2024-10-11 14:36:18,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:36:18,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:36:18,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:36:18,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:36:18,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:36:18,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:36:18,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:36:18,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 14:36:18,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:36:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:19,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:36:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:36:20,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565872683] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:36:20,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:36:20,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2024-10-11 14:36:20,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048800814] [2024-10-11 14:36:20,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:36:20,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 14:36:20,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:36:20,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 14:36:20,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2024-10-11 14:36:20,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-11 14:36:20,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 170 transitions, 1937 flow. Second operand has 26 states, 26 states have (on average 9.76923076923077) internal successors, (254), 26 states have internal predecessors, (254), 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) [2024-10-11 14:36:20,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:36:20,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-11 14:36:20,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:36:47,852 WARN L286 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 99 DAG size of output: 76 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-11 14:37:08,113 INFO L124 PetriNetUnfolderBase]: 68007/97484 cut-off events. [2024-10-11 14:37:08,114 INFO L125 PetriNetUnfolderBase]: For 565858/565858 co-relation queries the response was YES. [2024-10-11 14:37:08,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472129 conditions, 97484 events. 68007/97484 cut-off events. For 565858/565858 co-relation queries the response was YES. Maximal size of possible extension queue 3847. Compared 698551 event pairs, 2673 based on Foata normal form. 122/97605 useless extension candidates. Maximal degree in co-relation 355211. Up to 18091 conditions per place. [2024-10-11 14:37:09,111 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 1263 selfloop transitions, 1219 changer transitions 932/3418 dead transitions. [2024-10-11 14:37:09,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 3418 transitions, 37585 flow [2024-10-11 14:37:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2024-10-11 14:37:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2024-10-11 14:37:09,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 3121 transitions. [2024-10-11 14:37:09,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49816440542697527 [2024-10-11 14:37:09,122 INFO L175 Difference]: Start difference. First operand has 87 places, 170 transitions, 1937 flow. Second operand 179 states and 3121 transitions. [2024-10-11 14:37:09,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 3418 transitions, 37585 flow [2024-10-11 14:37:12,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 3418 transitions, 36824 flow, removed 375 selfloop flow, removed 1 redundant places. [2024-10-11 14:37:12,882 INFO L231 Difference]: Finished difference. Result has 362 places, 1462 transitions, 21110 flow [2024-10-11 14:37:12,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=179, PETRI_FLOW=21110, PETRI_PLACES=362, PETRI_TRANSITIONS=1462} [2024-10-11 14:37:12,882 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 324 predicate places. [2024-10-11 14:37:12,882 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 1462 transitions, 21110 flow [2024-10-11 14:37:12,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.76923076923077) internal successors, (254), 26 states have internal predecessors, (254), 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) [2024-10-11 14:37:12,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:12,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:12,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:13,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 14:37:13,088 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:37:13,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:13,088 INFO L85 PathProgramCache]: Analyzing trace with hash 134141366, now seen corresponding path program 4 times [2024-10-11 14:37:13,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:13,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311184277] [2024-10-11 14:37:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:13,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:14,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:14,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311184277] [2024-10-11 14:37:14,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311184277] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:14,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145681929] [2024-10-11 14:37:14,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:37:14,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:14,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:14,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:14,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:37:14,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:37:14,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:14,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 14:37:14,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:15,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:23,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145681929] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:23,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:23,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2024-10-11 14:37:23,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139050462] [2024-10-11 14:37:23,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:23,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:37:23,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:23,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:37:23,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=392, Unknown=1, NotChecked=0, Total=506 [2024-10-11 14:37:25,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 14:37:29,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 14:37:32,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 14:37:32,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-10-11 14:37:32,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 1462 transitions, 21110 flow. Second operand has 23 states, 23 states have (on average 10.652173913043478) internal successors, (245), 23 states have internal predecessors, (245), 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) [2024-10-11 14:37:32,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:32,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-10-11 14:37:32,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand