./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:43:31,941 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:43:31,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:43:31,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:43:32,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:43:32,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:43:32,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:43:32,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:43:32,039 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:43:32,039 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:43:32,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:43:32,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:43:32,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:43:32,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:43:32,044 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:43:32,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:43:32,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:43:32,046 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:43:32,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:43:32,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:43:32,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:43:32,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:43:32,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:43:32,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:43:32,049 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:43:32,049 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:43:32,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:43:32,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:43:32,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:43:32,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:43:32,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:43:32,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:43:32,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:43:32,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:43:32,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:43:32,052 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:43:32,052 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:43:32,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:43:32,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:43:32,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:43:32,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:43:32,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:43:32,054 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af523f24b0126267447f5590b01302c6de6f439c37a01df1dbf66192a849a6d6 [2024-11-19 01:43:32,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:43:32,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:43:32,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:43:32,296 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:43:32,296 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:43:32,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2024-11-19 01:43:33,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:43:33,952 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:43:33,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2024-11-19 01:43:33,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbfbf52d8/68b6c3db85ab4a648406c700b804f444/FLAGfd9f80e60 [2024-11-19 01:43:34,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbfbf52d8/68b6c3db85ab4a648406c700b804f444 [2024-11-19 01:43:34,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:43:34,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:43:34,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:43:34,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:43:34,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:43:34,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1085383b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34, skipping insertion in model container [2024-11-19 01:43:34,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,377 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:43:34,563 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2721,2734] [2024-11-19 01:43:34,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:43:34,576 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:43:34,596 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2721,2734] [2024-11-19 01:43:34,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:43:34,616 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:43:34,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34 WrapperNode [2024-11-19 01:43:34,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:43:34,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:43:34,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:43:34,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:43:34,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,647 INFO L138 Inliner]: procedures = 19, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-19 01:43:34,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:43:34,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:43:34,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:43:34,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:43:34,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,659 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,671 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 01:43:34,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:43:34,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:43:34,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:43:34,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:43:34,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (1/1) ... [2024-11-19 01:43:34,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:43:34,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:34,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:43:34,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:43:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:43:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:43:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:43:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:43:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:43:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:43:34,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:43:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 01:43:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 01:43:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:43:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:43:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:43:34,773 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:43:34,850 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:43:34,852 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:43:35,038 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:43:35,038 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:43:35,204 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:43:35,205 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:43:35,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:43:35 BoogieIcfgContainer [2024-11-19 01:43:35,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:43:35,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:43:35,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:43:35,211 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:43:35,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:43:34" (1/3) ... [2024-11-19 01:43:35,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bc8b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:43:35, skipping insertion in model container [2024-11-19 01:43:35,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:43:34" (2/3) ... [2024-11-19 01:43:35,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bc8b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:43:35, skipping insertion in model container [2024-11-19 01:43:35,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:43:35" (3/3) ... [2024-11-19 01:43:35,216 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2024-11-19 01:43:35,230 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:43:35,230 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:43:35,231 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:43:35,315 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 01:43:35,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 92 flow [2024-11-19 01:43:35,385 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-19 01:43:35,385 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:43:35,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 28 events. 4/28 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-19 01:43:35,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 32 transitions, 92 flow [2024-11-19 01:43:35,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 78 flow [2024-11-19 01:43:35,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:43:35,407 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;@4c55a519, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:43:35,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 01:43:35,419 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:43:35,420 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-19 01:43:35,420 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:43:35,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:35,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:35,421 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 2 more)] === [2024-11-19 01:43:35,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:35,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1825658945, now seen corresponding path program 1 times [2024-11-19 01:43:35,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:35,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808520485] [2024-11-19 01:43:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:35,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:35,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808520485] [2024-11-19 01:43:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808520485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:35,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:43:35,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167204219] [2024-11-19 01:43:35,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:35,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:43:35,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:43:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:43:35,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:43:35,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:35,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:35,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:43:35,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:36,253 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2024-11-19 01:43:36,253 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-19 01:43:36,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1732 events. 1367/1732 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5555 event pairs, 123 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2024-11-19 01:43:36,271 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-11-19 01:43:36,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2024-11-19 01:43:36,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:43:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:43:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-19 01:43:36,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-19 01:43:36,285 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 78 flow. Second operand 3 states and 69 transitions. [2024-11-19 01:43:36,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2024-11-19 01:43:36,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 01:43:36,294 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2024-11-19 01:43:36,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-11-19 01:43:36,300 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-11-19 01:43:36,300 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2024-11-19 01:43:36,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:36,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:36,301 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] [2024-11-19 01:43:36,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:43:36,301 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 2 more)] === [2024-11-19 01:43:36,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:36,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1779863488, now seen corresponding path program 1 times [2024-11-19 01:43:36,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:36,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710869445] [2024-11-19 01:43:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:36,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:36,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:36,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710869445] [2024-11-19 01:43:36,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710869445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:36,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:36,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:43:36,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663310098] [2024-11-19 01:43:36,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:36,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:43:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:43:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:43:36,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:43:36,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:36,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:36,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:43:36,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:36,734 INFO L124 PetriNetUnfolderBase]: 1593/2038 cut-off events. [2024-11-19 01:43:36,736 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2024-11-19 01:43:36,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 2038 events. 1593/2038 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7003 event pairs, 113 based on Foata normal form. 34/2066 useless extension candidates. Maximal degree in co-relation 1272. Up to 842 conditions per place. [2024-11-19 01:43:36,751 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 66 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-11-19 01:43:36,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 81 transitions, 391 flow [2024-11-19 01:43:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-19 01:43:36,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-19 01:43:36,755 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 115 transitions. [2024-11-19 01:43:36,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 81 transitions, 391 flow [2024-11-19 01:43:36,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:43:36,759 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2024-11-19 01:43:36,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2024-11-19 01:43:36,760 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-11-19 01:43:36,760 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2024-11-19 01:43:36,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:36,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:36,761 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] [2024-11-19 01:43:36,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:43:36,761 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 2 more)] === [2024-11-19 01:43:36,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash -823057285, now seen corresponding path program 1 times [2024-11-19 01:43:36,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:36,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872045764] [2024-11-19 01:43:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:36,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:36,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:36,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872045764] [2024-11-19 01:43:36,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872045764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:36,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:36,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:43:36,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324573500] [2024-11-19 01:43:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:36,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:43:36,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:36,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:43:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:43:36,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:43:36,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:36,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:36,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:43:36,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:37,146 INFO L124 PetriNetUnfolderBase]: 1547/1992 cut-off events. [2024-11-19 01:43:37,147 INFO L125 PetriNetUnfolderBase]: For 1776/1776 co-relation queries the response was YES. [2024-11-19 01:43:37,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6028 conditions, 1992 events. 1547/1992 cut-off events. For 1776/1776 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6975 event pairs, 95 based on Foata normal form. 46/2032 useless extension candidates. Maximal degree in co-relation 2829. Up to 812 conditions per place. [2024-11-19 01:43:37,159 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-11-19 01:43:37,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 78 transitions, 412 flow [2024-11-19 01:43:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-19 01:43:37,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-11-19 01:43:37,162 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 113 transitions. [2024-11-19 01:43:37,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 78 transitions, 412 flow [2024-11-19 01:43:37,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 78 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:43:37,166 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 169 flow [2024-11-19 01:43:37,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-11-19 01:43:37,167 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-11-19 01:43:37,167 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 169 flow [2024-11-19 01:43:37,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:37,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:37,167 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] [2024-11-19 01:43:37,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:43:37,168 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 2 more)] === [2024-11-19 01:43:37,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash 47067324, now seen corresponding path program 2 times [2024-11-19 01:43:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:37,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968846999] [2024-11-19 01:43:37,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:37,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:37,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:37,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:37,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:37,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968846999] [2024-11-19 01:43:37,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968846999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:37,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714173376] [2024-11-19 01:43:37,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:37,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:37,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:37,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:43:37,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:43:37,335 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:37,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:37,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:43:37,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:37,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:37,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714173376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:43:37,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:43:37,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-19 01:43:37,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036050052] [2024-11-19 01:43:37,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:43:37,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:43:37,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:37,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:43:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:43:37,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:43:37,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:37,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:37,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:43:37,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:37,945 INFO L124 PetriNetUnfolderBase]: 1472/1927 cut-off events. [2024-11-19 01:43:37,945 INFO L125 PetriNetUnfolderBase]: For 2610/2610 co-relation queries the response was YES. [2024-11-19 01:43:37,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 1927 events. 1472/1927 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7133 event pairs, 354 based on Foata normal form. 61/1970 useless extension candidates. Maximal degree in co-relation 2582. Up to 1023 conditions per place. [2024-11-19 01:43:37,958 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-11-19 01:43:37,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 78 transitions, 444 flow [2024-11-19 01:43:37,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-19 01:43:37,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-11-19 01:43:37,961 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 169 flow. Second operand 5 states and 114 transitions. [2024-11-19 01:43:37,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 78 transitions, 444 flow [2024-11-19 01:43:37,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:43:37,965 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 212 flow [2024-11-19 01:43:37,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-11-19 01:43:37,967 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-19 01:43:37,968 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 212 flow [2024-11-19 01:43:37,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:37,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:37,969 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] [2024-11-19 01:43:37,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:43:38,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:38,174 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 2 more)] === [2024-11-19 01:43:38,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:38,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2003843596, now seen corresponding path program 1 times [2024-11-19 01:43:38,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:38,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063028751] [2024-11-19 01:43:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:38,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063028751] [2024-11-19 01:43:38,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063028751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:38,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:38,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:43:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329878890] [2024-11-19 01:43:38,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:38,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:43:38,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:43:38,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:43:38,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:43:38,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:38,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:38,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:43:38,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:38,537 INFO L124 PetriNetUnfolderBase]: 1783/2410 cut-off events. [2024-11-19 01:43:38,537 INFO L125 PetriNetUnfolderBase]: For 6337/6337 co-relation queries the response was YES. [2024-11-19 01:43:38,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8750 conditions, 2410 events. 1783/2410 cut-off events. For 6337/6337 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 9863 event pairs, 285 based on Foata normal form. 64/2452 useless extension candidates. Maximal degree in co-relation 5382. Up to 1013 conditions per place. [2024-11-19 01:43:38,553 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-11-19 01:43:38,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 104 transitions, 803 flow [2024-11-19 01:43:38,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-19 01:43:38,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-19 01:43:38,556 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 212 flow. Second operand 5 states and 108 transitions. [2024-11-19 01:43:38,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 104 transitions, 803 flow [2024-11-19 01:43:38,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 104 transitions, 778 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-19 01:43:38,569 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 258 flow [2024-11-19 01:43:38,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-19 01:43:38,570 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-19 01:43:38,571 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 258 flow [2024-11-19 01:43:38,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:38,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:38,572 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] [2024-11-19 01:43:38,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:43:38,575 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 2 more)] === [2024-11-19 01:43:38,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2005361948, now seen corresponding path program 2 times [2024-11-19 01:43:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:38,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402919780] [2024-11-19 01:43:38,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:38,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:38,590 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:38,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:38,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:38,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402919780] [2024-11-19 01:43:38,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402919780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:38,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:38,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:43:38,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835190625] [2024-11-19 01:43:38,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:38,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:43:38,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:43:38,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:43:38,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:43:38,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:38,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:38,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:43:38,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:38,922 INFO L124 PetriNetUnfolderBase]: 1610/2155 cut-off events. [2024-11-19 01:43:38,922 INFO L125 PetriNetUnfolderBase]: For 6116/6116 co-relation queries the response was YES. [2024-11-19 01:43:38,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9020 conditions, 2155 events. 1610/2155 cut-off events. For 6116/6116 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8188 event pairs, 91 based on Foata normal form. 31/2164 useless extension candidates. Maximal degree in co-relation 5647. Up to 897 conditions per place. [2024-11-19 01:43:38,942 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2024-11-19 01:43:38,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 108 transitions, 856 flow [2024-11-19 01:43:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-11-19 01:43:38,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.66875 [2024-11-19 01:43:38,945 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 258 flow. Second operand 5 states and 107 transitions. [2024-11-19 01:43:38,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 108 transitions, 856 flow [2024-11-19 01:43:38,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 108 transitions, 856 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:43:38,955 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 319 flow [2024-11-19 01:43:38,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-11-19 01:43:38,957 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-11-19 01:43:38,957 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 319 flow [2024-11-19 01:43:38,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:38,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:38,958 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] [2024-11-19 01:43:38,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:43:38,959 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 2 more)] === [2024-11-19 01:43:38,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:38,962 INFO L85 PathProgramCache]: Analyzing trace with hash 595424223, now seen corresponding path program 1 times [2024-11-19 01:43:38,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:38,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697235736] [2024-11-19 01:43:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:38,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:39,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:39,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697235736] [2024-11-19 01:43:39,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697235736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:39,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:39,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:43:39,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937067856] [2024-11-19 01:43:39,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:39,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:43:39,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:39,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:43:39,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:43:39,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:43:39,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:39,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:39,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:43:39,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:39,323 INFO L124 PetriNetUnfolderBase]: 1577/2122 cut-off events. [2024-11-19 01:43:39,324 INFO L125 PetriNetUnfolderBase]: For 6970/6970 co-relation queries the response was YES. [2024-11-19 01:43:39,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9540 conditions, 2122 events. 1577/2122 cut-off events. For 6970/6970 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8181 event pairs, 71 based on Foata normal form. 33/2133 useless extension candidates. Maximal degree in co-relation 5985. Up to 983 conditions per place. [2024-11-19 01:43:39,338 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 88 selfloop transitions, 8 changer transitions 4/105 dead transitions. [2024-11-19 01:43:39,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 105 transitions, 865 flow [2024-11-19 01:43:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-11-19 01:43:39,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-19 01:43:39,339 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 319 flow. Second operand 5 states and 105 transitions. [2024-11-19 01:43:39,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 105 transitions, 865 flow [2024-11-19 01:43:39,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 105 transitions, 854 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-19 01:43:39,347 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 322 flow [2024-11-19 01:43:39,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-11-19 01:43:39,349 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2024-11-19 01:43:39,349 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 322 flow [2024-11-19 01:43:39,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:39,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:39,349 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] [2024-11-19 01:43:39,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:43:39,350 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 2 more)] === [2024-11-19 01:43:39,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:39,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1102090329, now seen corresponding path program 2 times [2024-11-19 01:43:39,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:39,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130868057] [2024-11-19 01:43:39,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:39,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:39,363 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:39,363 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:39,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:39,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130868057] [2024-11-19 01:43:39,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130868057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:39,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:39,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:43:39,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522643872] [2024-11-19 01:43:39,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:39,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:43:39,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:39,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:43:39,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:43:39,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:43:39,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:39,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:39,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:43:39,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:39,713 INFO L124 PetriNetUnfolderBase]: 1515/2072 cut-off events. [2024-11-19 01:43:39,713 INFO L125 PetriNetUnfolderBase]: For 7283/7283 co-relation queries the response was YES. [2024-11-19 01:43:39,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9584 conditions, 2072 events. 1515/2072 cut-off events. For 7283/7283 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8421 event pairs, 258 based on Foata normal form. 62/2112 useless extension candidates. Maximal degree in co-relation 6013. Up to 1124 conditions per place. [2024-11-19 01:43:39,734 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-11-19 01:43:39,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 104 transitions, 885 flow [2024-11-19 01:43:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-19 01:43:39,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-11-19 01:43:39,738 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 322 flow. Second operand 5 states and 103 transitions. [2024-11-19 01:43:39,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 104 transitions, 885 flow [2024-11-19 01:43:39,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 872 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-19 01:43:39,748 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 362 flow [2024-11-19 01:43:39,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-19 01:43:39,751 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-11-19 01:43:39,751 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 362 flow [2024-11-19 01:43:39,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:39,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:39,751 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] [2024-11-19 01:43:39,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:43:39,752 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 2 more)] === [2024-11-19 01:43:39,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1184458401, now seen corresponding path program 2 times [2024-11-19 01:43:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:39,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174846424] [2024-11-19 01:43:39,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:43:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:39,772 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:43:39,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:43:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:39,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174846424] [2024-11-19 01:43:39,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174846424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:43:39,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:43:39,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:43:39,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416967056] [2024-11-19 01:43:39,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:43:39,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:43:39,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:39,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:43:39,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:43:39,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:43:39,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:39,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:39,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:43:39,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:40,110 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2024-11-19 01:43:40,110 INFO L125 PetriNetUnfolderBase]: For 6916/6916 co-relation queries the response was YES. [2024-11-19 01:43:40,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9747 conditions, 1987 events. 1447/1987 cut-off events. For 6916/6916 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8177 event pairs, 375 based on Foata normal form. 68/2045 useless extension candidates. Maximal degree in co-relation 8621. Up to 1150 conditions per place. [2024-11-19 01:43:40,125 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-11-19 01:43:40,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 124 transitions, 1092 flow [2024-11-19 01:43:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:43:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:43:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-19 01:43:40,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69375 [2024-11-19 01:43:40,127 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 362 flow. Second operand 5 states and 111 transitions. [2024-11-19 01:43:40,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 124 transitions, 1092 flow [2024-11-19 01:43:40,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1034 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-19 01:43:40,138 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 399 flow [2024-11-19 01:43:40,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-19 01:43:40,139 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-19 01:43:40,139 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 399 flow [2024-11-19 01:43:40,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:40,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:43:40,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:43:40,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:43:40,140 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 2 more)] === [2024-11-19 01:43:40,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:43:40,141 INFO L85 PathProgramCache]: Analyzing trace with hash -547718246, now seen corresponding path program 1 times [2024-11-19 01:43:40,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:43:40,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083898280] [2024-11-19 01:43:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:43:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:40,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:43:40,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083898280] [2024-11-19 01:43:40,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083898280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:43:40,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435695757] [2024-11-19 01:43:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:43:40,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:43:40,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:43:40,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:43:40,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:43:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:43:40,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:43:40,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:43:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:43,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:43:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:43:43,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435695757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:43:43,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:43:43,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-19 01:43:43,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840959196] [2024-11-19 01:43:43,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:43:43,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:43:43,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:43:43,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:43:43,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:43:43,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:43:43,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 399 flow. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:43:43,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:43:43,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:43:43,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:43:48,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:43:56,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:44:01,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:44:04,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:44:06,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:44:08,488 INFO L124 PetriNetUnfolderBase]: 2908/4016 cut-off events. [2024-11-19 01:44:08,489 INFO L125 PetriNetUnfolderBase]: For 14442/14442 co-relation queries the response was YES. [2024-11-19 01:44:08,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19832 conditions, 4016 events. 2908/4016 cut-off events. For 14442/14442 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 18186 event pairs, 274 based on Foata normal form. 5/4011 useless extension candidates. Maximal degree in co-relation 17421. Up to 2119 conditions per place. [2024-11-19 01:44:08,524 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 129 changer transitions 12/370 dead transitions. [2024-11-19 01:44:08,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 370 transitions, 3308 flow [2024-11-19 01:44:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 01:44:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 01:44:08,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 458 transitions. [2024-11-19 01:44:08,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6505681818181818 [2024-11-19 01:44:08,527 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 399 flow. Second operand 22 states and 458 transitions. [2024-11-19 01:44:08,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 370 transitions, 3308 flow [2024-11-19 01:44:08,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 370 transitions, 3203 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-11-19 01:44:08,561 INFO L231 Difference]: Finished difference. Result has 100 places, 184 transitions, 1982 flow [2024-11-19 01:44:08,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1982, PETRI_PLACES=100, PETRI_TRANSITIONS=184} [2024-11-19 01:44:08,563 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2024-11-19 01:44:08,564 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 184 transitions, 1982 flow [2024-11-19 01:44:08,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:08,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:08,564 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:08,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 01:44:08,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 01:44:08,769 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:44:08,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1112763494, now seen corresponding path program 1 times [2024-11-19 01:44:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:08,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928774384] [2024-11-19 01:44:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:09,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:09,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928774384] [2024-11-19 01:44:09,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928774384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:09,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614335813] [2024-11-19 01:44:09,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:09,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:09,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:09,213 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:44:09,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:44:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:09,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 01:44:09,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:12,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:13,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614335813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:13,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:13,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-19 01:44:13,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066950942] [2024-11-19 01:44:13,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:13,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:44:13,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:13,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:44:13,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:44:13,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-19 01:44:13,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 184 transitions, 1982 flow. Second operand has 16 states, 16 states have (on average 12.4375) internal successors, (199), 16 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:13,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:13,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-19 01:44:13,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:20,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:44:24,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:44:25,590 INFO L124 PetriNetUnfolderBase]: 4549/6300 cut-off events. [2024-11-19 01:44:25,590 INFO L125 PetriNetUnfolderBase]: For 31048/31048 co-relation queries the response was YES. [2024-11-19 01:44:25,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36172 conditions, 6300 events. 4549/6300 cut-off events. For 31048/31048 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 31293 event pairs, 253 based on Foata normal form. 21/6311 useless extension candidates. Maximal degree in co-relation 35540. Up to 4273 conditions per place. [2024-11-19 01:44:25,638 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 344 selfloop transitions, 100 changer transitions 15/464 dead transitions. [2024-11-19 01:44:25,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 464 transitions, 4785 flow [2024-11-19 01:44:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 01:44:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 01:44:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 376 transitions. [2024-11-19 01:44:25,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.734375 [2024-11-19 01:44:25,641 INFO L175 Difference]: Start difference. First operand has 100 places, 184 transitions, 1982 flow. Second operand 16 states and 376 transitions. [2024-11-19 01:44:25,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 464 transitions, 4785 flow [2024-11-19 01:44:25,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 464 transitions, 4440 flow, removed 170 selfloop flow, removed 1 redundant places. [2024-11-19 01:44:25,792 INFO L231 Difference]: Finished difference. Result has 124 places, 282 transitions, 2977 flow [2024-11-19 01:44:25,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2977, PETRI_PLACES=124, PETRI_TRANSITIONS=282} [2024-11-19 01:44:25,792 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 88 predicate places. [2024-11-19 01:44:25,793 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 282 transitions, 2977 flow [2024-11-19 01:44:25,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.4375) internal successors, (199), 16 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:44:25,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:25,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:25,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:44:25,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:25,994 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:44:25,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1128596426, now seen corresponding path program 2 times [2024-11-19 01:44:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:25,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395292864] [2024-11-19 01:44:25,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:26,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:26,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:26,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395292864] [2024-11-19 01:44:26,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395292864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249587623] [2024-11-19 01:44:26,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:26,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:26,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:26,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:44:26,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:44:26,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:44:26,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:26,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 01:44:26,378 INFO L278 TraceCheckSpWp]: Computing forward predicates...