./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-trans.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/chl-nzb-file-trans.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 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:45:45,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:45:45,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:45:45,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:45:45,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:45:45,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:45:45,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:45:45,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:45:45,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:45:45,910 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:45:45,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:45:45,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:45:45,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:45:45,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:45:45,912 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:45:45,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:45:45,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:45:45,914 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:45:45,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:45:45,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:45:45,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:45:45,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:45:45,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:45:45,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:45:45,916 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:45:45,916 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:45:45,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:45:45,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:45:45,917 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:45:45,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:45:45,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:45:45,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:45:45,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:45:45,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:45:45,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:45:45,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:45:45,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:45:45,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:45:45,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:45:45,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:45:45,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:45:45,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:45:45,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2024-11-19 01:45:46,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:45:46,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:45:46,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:45:46,216 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:45:46,216 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:45:46,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-11-19 01:45:47,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:45:47,789 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:45:47,790 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-11-19 01:45:47,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9c111648/b195768bbbc54d59bfbc73c2d432af41/FLAGd8557f0e6 [2024-11-19 01:45:47,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9c111648/b195768bbbc54d59bfbc73c2d432af41 [2024-11-19 01:45:47,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:45:47,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:45:47,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:45:47,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:45:47,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:45:47,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:45:47" (1/1) ... [2024-11-19 01:45:47,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d79dfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:47, skipping insertion in model container [2024-11-19 01:45:47,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:45:47" (1/1) ... [2024-11-19 01:45:47,860 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:45:48,081 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/chl-nzb-file-trans.wvr.c[6489,6502] [2024-11-19 01:45:48,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:45:48,113 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:45:48,155 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/chl-nzb-file-trans.wvr.c[6489,6502] [2024-11-19 01:45:48,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:45:48,182 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:45:48,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48 WrapperNode [2024-11-19 01:45:48,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:45:48,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:45:48,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:45:48,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:45:48,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,260 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 603 [2024-11-19 01:45:48,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:45:48,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:45:48,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:45:48,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:45:48,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,304 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-19 01:45:48,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:45:48,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:45:48,352 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:45:48,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:45:48,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (1/1) ... [2024-11-19 01:45:48,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:45:48,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:48,418 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 01:45:48,424 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 01:45:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:45:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:45:48,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:45:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:45:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:45:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:45:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:45:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:45:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:45:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:45:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:45:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:45:48,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:45:48,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:45:48,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:45:48,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:45:48,479 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 01:45:48,613 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:45:48,615 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:45:49,478 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:45:49,478 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:45:50,303 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:45:50,304 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 01:45:50,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:45:50 BoogieIcfgContainer [2024-11-19 01:45:50,304 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:45:50,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:45:50,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:45:50,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:45:50,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:45:47" (1/3) ... [2024-11-19 01:45:50,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e7c081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:45:50, skipping insertion in model container [2024-11-19 01:45:50,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:45:48" (2/3) ... [2024-11-19 01:45:50,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e7c081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:45:50, skipping insertion in model container [2024-11-19 01:45:50,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:45:50" (3/3) ... [2024-11-19 01:45:50,313 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2024-11-19 01:45:50,332 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:45:50,332 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:45:50,332 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:45:50,461 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:45:50,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-19 01:45:50,545 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-19 01:45:50,545 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:45:50,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-19 01:45:50,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-19 01:45:50,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-19 01:45:50,563 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:45:50,572 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;@7379f97d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:45:50,572 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:45:50,594 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:45:50,595 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-19 01:45:50,595 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:45:50,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:50,596 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 01:45:50,596 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:45:50,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:50,603 INFO L85 PathProgramCache]: Analyzing trace with hash 46384734, now seen corresponding path program 1 times [2024-11-19 01:45:50,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:50,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113007737] [2024-11-19 01:45:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:50,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:51,100 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 01:45:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:51,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113007737] [2024-11-19 01:45:51,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113007737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:51,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:51,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:45:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525008003] [2024-11-19 01:45:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:51,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:45:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:51,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:45:51,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:45:51,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:45:51,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 01:45:51,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:51,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:45:51,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:52,037 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2024-11-19 01:45:52,039 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-11-19 01:45:52,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12261 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2024-11-19 01:45:52,066 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-11-19 01:45:52,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2024-11-19 01:45:52,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:45:52,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:45:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-19 01:45:52,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-11-19 01:45:52,080 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2024-11-19 01:45:52,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2024-11-19 01:45:52,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:45:52,088 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2024-11-19 01:45:52,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2024-11-19 01:45:52,095 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-11-19 01:45:52,096 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2024-11-19 01:45:52,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 01:45:52,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:52,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:52,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:45:52,097 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:45:52,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:52,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2050377923, now seen corresponding path program 1 times [2024-11-19 01:45:52,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:52,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140757936] [2024-11-19 01:45:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:52,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:52,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:52,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140757936] [2024-11-19 01:45:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140757936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756138966] [2024-11-19 01:45:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:52,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:52,333 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 01:45:52,335 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 01:45:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:52,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 01:45:52,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:52,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:52,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756138966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:52,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:52,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-19 01:45:52,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589909627] [2024-11-19 01:45:52,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:52,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:45:52,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:52,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:45:52,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:45:52,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:45:52,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 01:45:52,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:52,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:45:52,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:53,396 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2024-11-19 01:45:53,397 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-19 01:45:53,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12260 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2024-11-19 01:45:53,412 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2024-11-19 01:45:53,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2024-11-19 01:45:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:45:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:45:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-11-19 01:45:53,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2024-11-19 01:45:53,415 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2024-11-19 01:45:53,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2024-11-19 01:45:53,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:45:53,417 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2024-11-19 01:45:53,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2024-11-19 01:45:53,418 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-11-19 01:45:53,418 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2024-11-19 01:45:53,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 01:45:53,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:53,418 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 01:45:53,439 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 01:45:53,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:53,620 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:45:53,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:53,621 INFO L85 PathProgramCache]: Analyzing trace with hash 154946276, now seen corresponding path program 2 times [2024-11-19 01:45:53,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:53,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258541456] [2024-11-19 01:45:53,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:53,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:53,670 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:45:53,671 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:54,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:54,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258541456] [2024-11-19 01:45:54,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258541456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:54,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:54,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:45:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273235820] [2024-11-19 01:45:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:54,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:45:54,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:54,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:45:54,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:45:54,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:45:54,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:45:54,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:54,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:45:54,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:55,950 INFO L124 PetriNetUnfolderBase]: 4763/6629 cut-off events. [2024-11-19 01:45:55,950 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-11-19 01:45:55,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13422 conditions, 6629 events. 4763/6629 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31530 event pairs, 1422 based on Foata normal form. 1/5337 useless extension candidates. Maximal degree in co-relation 13334. Up to 2905 conditions per place. [2024-11-19 01:45:55,981 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 107 selfloop transitions, 14 changer transitions 1/123 dead transitions. [2024-11-19 01:45:55,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 123 transitions, 606 flow [2024-11-19 01:45:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:45:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:45:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-19 01:45:55,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-11-19 01:45:55,983 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 131 transitions. [2024-11-19 01:45:55,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 123 transitions, 606 flow [2024-11-19 01:45:55,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 123 transitions, 582 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-19 01:45:55,987 INFO L231 Difference]: Finished difference. Result has 54 places, 68 transitions, 294 flow [2024-11-19 01:45:55,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=54, PETRI_TRANSITIONS=68} [2024-11-19 01:45:55,988 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-11-19 01:45:55,989 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 68 transitions, 294 flow [2024-11-19 01:45:55,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:45:55,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:55,989 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 01:45:55,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:45:55,990 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:45:55,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:55,990 INFO L85 PathProgramCache]: Analyzing trace with hash -507933382, now seen corresponding path program 3 times [2024-11-19 01:45:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:55,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924929087] [2024-11-19 01:45:55,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:45:55,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:56,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:45:56,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 01:45:56,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:56,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924929087] [2024-11-19 01:45:56,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924929087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:56,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:56,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:45:56,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679661421] [2024-11-19 01:45:56,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:56,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:45:56,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:56,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:45:56,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:45:56,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:45:56,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 68 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:45:56,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:56,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:45:56,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:58,344 INFO L124 PetriNetUnfolderBase]: 6290/8946 cut-off events. [2024-11-19 01:45:58,345 INFO L125 PetriNetUnfolderBase]: For 3136/3136 co-relation queries the response was YES. [2024-11-19 01:45:58,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21821 conditions, 8946 events. 6290/8946 cut-off events. For 3136/3136 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 45308 event pairs, 2853 based on Foata normal form. 1/8289 useless extension candidates. Maximal degree in co-relation 21741. Up to 5313 conditions per place. [2024-11-19 01:45:58,403 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 120 selfloop transitions, 18 changer transitions 1/140 dead transitions. [2024-11-19 01:45:58,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 140 transitions, 804 flow [2024-11-19 01:45:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:45:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:45:58,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-19 01:45:58,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-11-19 01:45:58,405 INFO L175 Difference]: Start difference. First operand has 54 places, 68 transitions, 294 flow. Second operand 5 states and 130 transitions. [2024-11-19 01:45:58,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 140 transitions, 804 flow [2024-11-19 01:45:58,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 140 transitions, 804 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:45:58,427 INFO L231 Difference]: Finished difference. Result has 61 places, 80 transitions, 446 flow [2024-11-19 01:45:58,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=61, PETRI_TRANSITIONS=80} [2024-11-19 01:45:58,428 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-11-19 01:45:58,428 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 80 transitions, 446 flow [2024-11-19 01:45:58,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:45:58,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:58,429 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 01:45:58,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:45:58,429 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:45:58,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:58,430 INFO L85 PathProgramCache]: Analyzing trace with hash -105214844, now seen corresponding path program 4 times [2024-11-19 01:45:58,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:58,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814770680] [2024-11-19 01:45:58,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:45:58,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:58,464 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:45:58,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 01:45:58,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814770680] [2024-11-19 01:45:58,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814770680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834009526] [2024-11-19 01:45:58,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:45:58,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:58,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:58,603 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 01:45:58,605 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 01:45:58,805 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:45:58,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:58,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:45:58,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 01:45:58,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 01:45:58,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834009526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:45:58,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:45:58,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-19 01:45:58,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693806408] [2024-11-19 01:45:58,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:45:58,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:45:58,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:58,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:45:58,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:45:58,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:45:58,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 80 transitions, 446 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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 01:45:58,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:58,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:45:58,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:00,599 INFO L124 PetriNetUnfolderBase]: 6290/8949 cut-off events. [2024-11-19 01:46:00,600 INFO L125 PetriNetUnfolderBase]: For 10182/10182 co-relation queries the response was YES. [2024-11-19 01:46:00,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25019 conditions, 8949 events. 6290/8949 cut-off events. For 10182/10182 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 45025 event pairs, 4538 based on Foata normal form. 1/8577 useless extension candidates. Maximal degree in co-relation 24923. Up to 8928 conditions per place. [2024-11-19 01:46:00,646 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 64 selfloop transitions, 18 changer transitions 0/83 dead transitions. [2024-11-19 01:46:00,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 83 transitions, 628 flow [2024-11-19 01:46:00,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:46:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:46:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-19 01:46:00,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2024-11-19 01:46:00,648 INFO L175 Difference]: Start difference. First operand has 61 places, 80 transitions, 446 flow. Second operand 7 states and 87 transitions. [2024-11-19 01:46:00,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 83 transitions, 628 flow [2024-11-19 01:46:00,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 624 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-19 01:46:00,683 INFO L231 Difference]: Finished difference. Result has 68 places, 83 transitions, 510 flow [2024-11-19 01:46:00,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=510, PETRI_PLACES=68, PETRI_TRANSITIONS=83} [2024-11-19 01:46:00,684 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-11-19 01:46:00,684 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 83 transitions, 510 flow [2024-11-19 01:46:00,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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 01:46:00,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:00,685 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 01:46:00,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:46:00,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:46:00,886 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:00,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:00,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1674624371, now seen corresponding path program 5 times [2024-11-19 01:46:00,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:00,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742412093] [2024-11-19 01:46:00,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:46:00,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:00,945 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:46:00,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:01,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:01,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742412093] [2024-11-19 01:46:01,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742412093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:01,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:01,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:01,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691844345] [2024-11-19 01:46:01,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:01,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:01,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:01,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:01,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:01,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:46:01,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:01,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:01,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:03,923 INFO L124 PetriNetUnfolderBase]: 9878/14045 cut-off events. [2024-11-19 01:46:03,923 INFO L125 PetriNetUnfolderBase]: For 15575/15575 co-relation queries the response was YES. [2024-11-19 01:46:03,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38777 conditions, 14045 events. 9878/14045 cut-off events. For 15575/15575 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 75645 event pairs, 3474 based on Foata normal form. 1/13481 useless extension candidates. Maximal degree in co-relation 38660. Up to 6240 conditions per place. [2024-11-19 01:46:04,009 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 136 selfloop transitions, 34 changer transitions 2/173 dead transitions. [2024-11-19 01:46:04,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 173 transitions, 1264 flow [2024-11-19 01:46:04,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:46:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:46:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-19 01:46:04,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2024-11-19 01:46:04,012 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 510 flow. Second operand 5 states and 134 transitions. [2024-11-19 01:46:04,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 173 transitions, 1264 flow [2024-11-19 01:46:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 173 transitions, 1228 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-19 01:46:04,052 INFO L231 Difference]: Finished difference. Result has 72 places, 108 transitions, 840 flow [2024-11-19 01:46:04,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=72, PETRI_TRANSITIONS=108} [2024-11-19 01:46:04,054 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-11-19 01:46:04,055 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 108 transitions, 840 flow [2024-11-19 01:46:04,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:46:04,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:04,055 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 01:46:04,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:46:04,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:04,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash -763439597, now seen corresponding path program 6 times [2024-11-19 01:46:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253961319] [2024-11-19 01:46:04,057 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:46:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:04,100 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:46:04,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:04,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:04,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253961319] [2024-11-19 01:46:04,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253961319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:04,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:04,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:04,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029867715] [2024-11-19 01:46:04,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:04,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:04,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:04,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:04,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:04,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:04,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 108 transitions, 840 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:46:04,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:04,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:04,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:06,634 INFO L124 PetriNetUnfolderBase]: 9846/13988 cut-off events. [2024-11-19 01:46:06,635 INFO L125 PetriNetUnfolderBase]: For 29790/29790 co-relation queries the response was YES. [2024-11-19 01:46:06,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42622 conditions, 13988 events. 9846/13988 cut-off events. For 29790/29790 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 74978 event pairs, 5006 based on Foata normal form. 1/13600 useless extension candidates. Maximal degree in co-relation 42519. Up to 8790 conditions per place. [2024-11-19 01:46:06,711 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 145 selfloop transitions, 25 changer transitions 2/173 dead transitions. [2024-11-19 01:46:06,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 173 transitions, 1482 flow [2024-11-19 01:46:06,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:46:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:46:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-19 01:46:06,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-11-19 01:46:06,714 INFO L175 Difference]: Start difference. First operand has 72 places, 108 transitions, 840 flow. Second operand 5 states and 127 transitions. [2024-11-19 01:46:06,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 173 transitions, 1482 flow [2024-11-19 01:46:06,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 173 transitions, 1468 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-19 01:46:06,796 INFO L231 Difference]: Finished difference. Result has 79 places, 118 transitions, 1044 flow [2024-11-19 01:46:06,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1044, PETRI_PLACES=79, PETRI_TRANSITIONS=118} [2024-11-19 01:46:06,797 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-11-19 01:46:06,797 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 118 transitions, 1044 flow [2024-11-19 01:46:06,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:46:06,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:06,798 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 01:46:06,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:46:06,799 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:06,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1901130979, now seen corresponding path program 7 times [2024-11-19 01:46:06,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:06,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265650780] [2024-11-19 01:46:06,799 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:46:06,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:46:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:07,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:07,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265650780] [2024-11-19 01:46:07,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265650780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:07,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:07,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:07,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110331026] [2024-11-19 01:46:07,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:07,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:07,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:07,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:07,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:07,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:07,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 118 transitions, 1044 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:46:07,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:07,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:07,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:10,135 INFO L124 PetriNetUnfolderBase]: 11412/16225 cut-off events. [2024-11-19 01:46:10,136 INFO L125 PetriNetUnfolderBase]: For 44715/44715 co-relation queries the response was YES. [2024-11-19 01:46:10,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50730 conditions, 16225 events. 11412/16225 cut-off events. For 44715/44715 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 90630 event pairs, 3434 based on Foata normal form. 1/15754 useless extension candidates. Maximal degree in co-relation 50623. Up to 6772 conditions per place. [2024-11-19 01:46:10,240 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 149 selfloop transitions, 55 changer transitions 1/206 dead transitions. [2024-11-19 01:46:10,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 206 transitions, 1874 flow [2024-11-19 01:46:10,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:46:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:46:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-19 01:46:10,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6040816326530613 [2024-11-19 01:46:10,242 INFO L175 Difference]: Start difference. First operand has 79 places, 118 transitions, 1044 flow. Second operand 5 states and 148 transitions. [2024-11-19 01:46:10,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 206 transitions, 1874 flow [2024-11-19 01:46:10,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 206 transitions, 1824 flow, removed 25 selfloop flow, removed 0 redundant places. [2024-11-19 01:46:10,411 INFO L231 Difference]: Finished difference. Result has 86 places, 136 transitions, 1392 flow [2024-11-19 01:46:10,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1392, PETRI_PLACES=86, PETRI_TRANSITIONS=136} [2024-11-19 01:46:10,414 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2024-11-19 01:46:10,415 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 136 transitions, 1392 flow [2024-11-19 01:46:10,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:46:10,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:10,415 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 01:46:10,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:46:10,417 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:10,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:10,417 INFO L85 PathProgramCache]: Analyzing trace with hash 186084019, now seen corresponding path program 8 times [2024-11-19 01:46:10,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:10,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590416140] [2024-11-19 01:46:10,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:46:10,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:10,462 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:46:10,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:10,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590416140] [2024-11-19 01:46:10,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590416140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:10,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:10,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:10,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277736234] [2024-11-19 01:46:10,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:10,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:10,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:10,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:10,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:10,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 136 transitions, 1392 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:46:10,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:10,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:10,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:13,478 INFO L124 PetriNetUnfolderBase]: 12019/17111 cut-off events. [2024-11-19 01:46:13,478 INFO L125 PetriNetUnfolderBase]: For 62520/62520 co-relation queries the response was YES. [2024-11-19 01:46:13,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57209 conditions, 17111 events. 12019/17111 cut-off events. For 62520/62520 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 96665 event pairs, 2719 based on Foata normal form. 1/16595 useless extension candidates. Maximal degree in co-relation 57098. Up to 6063 conditions per place. [2024-11-19 01:46:13,669 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 162 selfloop transitions, 80 changer transitions 1/244 dead transitions. [2024-11-19 01:46:13,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 244 transitions, 2378 flow [2024-11-19 01:46:13,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:46:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:46:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-11-19 01:46:13,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-11-19 01:46:13,671 INFO L175 Difference]: Start difference. First operand has 86 places, 136 transitions, 1392 flow. Second operand 6 states and 180 transitions. [2024-11-19 01:46:13,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 244 transitions, 2378 flow [2024-11-19 01:46:13,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 244 transitions, 2332 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-19 01:46:13,788 INFO L231 Difference]: Finished difference. Result has 94 places, 161 transitions, 1968 flow [2024-11-19 01:46:13,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1968, PETRI_PLACES=94, PETRI_TRANSITIONS=161} [2024-11-19 01:46:13,789 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-11-19 01:46:13,789 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 161 transitions, 1968 flow [2024-11-19 01:46:13,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:46:13,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:13,790 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:13,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:46:13,790 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:13,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:13,790 INFO L85 PathProgramCache]: Analyzing trace with hash -783333830, now seen corresponding path program 1 times [2024-11-19 01:46:13,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:13,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134284313] [2024-11-19 01:46:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:46:13,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:46:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:13,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:13,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134284313] [2024-11-19 01:46:13,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134284313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:13,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:13,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:46:13,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817090314] [2024-11-19 01:46:13,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:13,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:46:13,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:13,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:46:13,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:46:13,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:13,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 161 transitions, 1968 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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 01:46:13,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:13,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:13,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:16,467 INFO L124 PetriNetUnfolderBase]: 13145/18849 cut-off events. [2024-11-19 01:46:16,468 INFO L125 PetriNetUnfolderBase]: For 95751/95751 co-relation queries the response was YES. [2024-11-19 01:46:16,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66534 conditions, 18849 events. 13145/18849 cut-off events. For 95751/95751 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 108687 event pairs, 4645 based on Foata normal form. 4/18251 useless extension candidates. Maximal degree in co-relation 66420. Up to 14425 conditions per place. [2024-11-19 01:46:16,554 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 167 selfloop transitions, 14 changer transitions 44/226 dead transitions. [2024-11-19 01:46:16,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 226 transitions, 2981 flow [2024-11-19 01:46:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:46:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:46:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-19 01:46:16,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-11-19 01:46:16,556 INFO L175 Difference]: Start difference. First operand has 94 places, 161 transitions, 1968 flow. Second operand 4 states and 101 transitions. [2024-11-19 01:46:16,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 226 transitions, 2981 flow [2024-11-19 01:46:16,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 226 transitions, 2917 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-11-19 01:46:16,776 INFO L231 Difference]: Finished difference. Result has 100 places, 156 transitions, 1943 flow [2024-11-19 01:46:16,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1943, PETRI_PLACES=100, PETRI_TRANSITIONS=156} [2024-11-19 01:46:16,777 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-11-19 01:46:16,777 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 156 transitions, 1943 flow [2024-11-19 01:46:16,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 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 01:46:16,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:16,778 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:16,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:46:16,778 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:16,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2039323402, now seen corresponding path program 1 times [2024-11-19 01:46:16,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:16,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101334836] [2024-11-19 01:46:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:46:16,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:46:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:17,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:17,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101334836] [2024-11-19 01:46:17,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101334836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:17,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:17,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:17,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395614333] [2024-11-19 01:46:17,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:17,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:17,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:17,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:17,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:17,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:17,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 156 transitions, 1943 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:17,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:17,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:17,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:19,450 INFO L124 PetriNetUnfolderBase]: 12429/17885 cut-off events. [2024-11-19 01:46:19,451 INFO L125 PetriNetUnfolderBase]: For 84323/84323 co-relation queries the response was YES. [2024-11-19 01:46:19,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61338 conditions, 17885 events. 12429/17885 cut-off events. For 84323/84323 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 102121 event pairs, 7496 based on Foata normal form. 27/17298 useless extension candidates. Maximal degree in co-relation 61221. Up to 13892 conditions per place. [2024-11-19 01:46:19,558 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 192 selfloop transitions, 9 changer transitions 15/217 dead transitions. [2024-11-19 01:46:19,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 217 transitions, 2663 flow [2024-11-19 01:46:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:46:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:46:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-19 01:46:19,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-19 01:46:19,560 INFO L175 Difference]: Start difference. First operand has 100 places, 156 transitions, 1943 flow. Second operand 5 states and 120 transitions. [2024-11-19 01:46:19,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 217 transitions, 2663 flow [2024-11-19 01:46:19,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 217 transitions, 2617 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-19 01:46:19,788 INFO L231 Difference]: Finished difference. Result has 104 places, 158 transitions, 1972 flow [2024-11-19 01:46:19,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1972, PETRI_PLACES=104, PETRI_TRANSITIONS=158} [2024-11-19 01:46:19,789 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2024-11-19 01:46:19,789 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 158 transitions, 1972 flow [2024-11-19 01:46:19,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:19,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:19,790 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:19,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:46:19,790 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:19,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1229440420, now seen corresponding path program 1 times [2024-11-19 01:46:19,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269046216] [2024-11-19 01:46:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:46:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:46:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:20,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:20,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269046216] [2024-11-19 01:46:20,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269046216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:20,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:20,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975846731] [2024-11-19 01:46:20,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:20,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:20,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:20,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:20,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:20,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:20,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 158 transitions, 1972 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:20,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:20,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:20,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:23,282 INFO L124 PetriNetUnfolderBase]: 12836/18572 cut-off events. [2024-11-19 01:46:23,282 INFO L125 PetriNetUnfolderBase]: For 82821/82821 co-relation queries the response was YES. [2024-11-19 01:46:23,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62624 conditions, 18572 events. 12836/18572 cut-off events. For 82821/82821 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 108518 event pairs, 5607 based on Foata normal form. 72/18018 useless extension candidates. Maximal degree in co-relation 62505. Up to 9711 conditions per place. [2024-11-19 01:46:23,432 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 166 selfloop transitions, 19 changer transitions 39/225 dead transitions. [2024-11-19 01:46:23,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 225 transitions, 2747 flow [2024-11-19 01:46:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:46:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:46:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-19 01:46:23,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-11-19 01:46:23,433 INFO L175 Difference]: Start difference. First operand has 104 places, 158 transitions, 1972 flow. Second operand 5 states and 127 transitions. [2024-11-19 01:46:23,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 225 transitions, 2747 flow [2024-11-19 01:46:23,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 225 transitions, 2699 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-19 01:46:23,678 INFO L231 Difference]: Finished difference. Result has 108 places, 138 transitions, 1748 flow [2024-11-19 01:46:23,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1748, PETRI_PLACES=108, PETRI_TRANSITIONS=138} [2024-11-19 01:46:23,678 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 65 predicate places. [2024-11-19 01:46:23,678 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 138 transitions, 1748 flow [2024-11-19 01:46:23,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:23,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:23,679 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:23,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:46:23,679 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:23,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:23,679 INFO L85 PathProgramCache]: Analyzing trace with hash -805292702, now seen corresponding path program 2 times [2024-11-19 01:46:23,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:23,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938402510] [2024-11-19 01:46:23,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:46:23,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:23,704 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:46:23,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:23,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938402510] [2024-11-19 01:46:23,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938402510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:23,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:23,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:23,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537633998] [2024-11-19 01:46:23,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:23,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:23,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:23,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:23,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:23,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:23,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 138 transitions, 1748 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:23,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:23,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:23,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:26,246 INFO L124 PetriNetUnfolderBase]: 11889/17287 cut-off events. [2024-11-19 01:46:26,246 INFO L125 PetriNetUnfolderBase]: For 80438/80438 co-relation queries the response was YES. [2024-11-19 01:46:26,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58411 conditions, 17287 events. 11889/17287 cut-off events. For 80438/80438 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 100365 event pairs, 6642 based on Foata normal form. 1/16652 useless extension candidates. Maximal degree in co-relation 58372. Up to 12315 conditions per place. [2024-11-19 01:46:26,387 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 175 selfloop transitions, 40 changer transitions 2/218 dead transitions. [2024-11-19 01:46:26,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 218 transitions, 2598 flow [2024-11-19 01:46:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:46:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:46:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-11-19 01:46:26,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2024-11-19 01:46:26,388 INFO L175 Difference]: Start difference. First operand has 108 places, 138 transitions, 1748 flow. Second operand 6 states and 149 transitions. [2024-11-19 01:46:26,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 218 transitions, 2598 flow [2024-11-19 01:46:26,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 218 transitions, 2575 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 01:46:26,616 INFO L231 Difference]: Finished difference. Result has 112 places, 150 transitions, 2069 flow [2024-11-19 01:46:26,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2069, PETRI_PLACES=112, PETRI_TRANSITIONS=150} [2024-11-19 01:46:26,617 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2024-11-19 01:46:26,617 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 150 transitions, 2069 flow [2024-11-19 01:46:26,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:26,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:26,617 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:26,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:46:26,617 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:26,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1580491190, now seen corresponding path program 2 times [2024-11-19 01:46:26,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:26,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892852151] [2024-11-19 01:46:26,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:46:26,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:26,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:46:26,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:26,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:26,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892852151] [2024-11-19 01:46:26,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892852151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:26,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:26,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840594095] [2024-11-19 01:46:26,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:26,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:26,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:26,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 150 transitions, 2069 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:26,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:26,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:26,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:29,082 INFO L124 PetriNetUnfolderBase]: 12489/18133 cut-off events. [2024-11-19 01:46:29,083 INFO L125 PetriNetUnfolderBase]: For 99017/99017 co-relation queries the response was YES. [2024-11-19 01:46:29,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64779 conditions, 18133 events. 12489/18133 cut-off events. For 99017/99017 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 106728 event pairs, 4012 based on Foata normal form. 2/17499 useless extension candidates. Maximal degree in co-relation 64738. Up to 8588 conditions per place. [2024-11-19 01:46:29,213 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 156 selfloop transitions, 51 changer transitions 23/231 dead transitions. [2024-11-19 01:46:29,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 231 transitions, 3108 flow [2024-11-19 01:46:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:46:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:46:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-19 01:46:29,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2024-11-19 01:46:29,215 INFO L175 Difference]: Start difference. First operand has 112 places, 150 transitions, 2069 flow. Second operand 5 states and 134 transitions. [2024-11-19 01:46:29,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 231 transitions, 3108 flow [2024-11-19 01:46:29,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 231 transitions, 3080 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-11-19 01:46:29,454 INFO L231 Difference]: Finished difference. Result has 119 places, 156 transitions, 2301 flow [2024-11-19 01:46:29,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2301, PETRI_PLACES=119, PETRI_TRANSITIONS=156} [2024-11-19 01:46:29,455 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2024-11-19 01:46:29,455 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 156 transitions, 2301 flow [2024-11-19 01:46:29,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:29,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:29,455 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:29,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:46:29,456 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:29,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:29,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1750016208, now seen corresponding path program 3 times [2024-11-19 01:46:29,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:29,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41037953] [2024-11-19 01:46:29,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:46:29,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:29,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:46:29,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:29,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:29,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41037953] [2024-11-19 01:46:29,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41037953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:29,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:29,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:29,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550153893] [2024-11-19 01:46:29,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:29,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:29,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:29,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:29,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 156 transitions, 2301 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:29,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:29,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:29,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:32,055 INFO L124 PetriNetUnfolderBase]: 12562/18219 cut-off events. [2024-11-19 01:46:32,056 INFO L125 PetriNetUnfolderBase]: For 112261/112261 co-relation queries the response was YES. [2024-11-19 01:46:32,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67288 conditions, 18219 events. 12562/18219 cut-off events. For 112261/112261 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 107225 event pairs, 3848 based on Foata normal form. 5/17578 useless extension candidates. Maximal degree in co-relation 67243. Up to 6724 conditions per place. [2024-11-19 01:46:32,174 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 156 selfloop transitions, 57 changer transitions 36/250 dead transitions. [2024-11-19 01:46:32,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 250 transitions, 3315 flow [2024-11-19 01:46:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:46:32,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:46:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-11-19 01:46:32,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.564625850340136 [2024-11-19 01:46:32,175 INFO L175 Difference]: Start difference. First operand has 119 places, 156 transitions, 2301 flow. Second operand 6 states and 166 transitions. [2024-11-19 01:46:32,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 250 transitions, 3315 flow [2024-11-19 01:46:32,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 250 transitions, 3226 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-19 01:46:32,415 INFO L231 Difference]: Finished difference. Result has 120 places, 151 transitions, 2225 flow [2024-11-19 01:46:32,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2225, PETRI_PLACES=120, PETRI_TRANSITIONS=151} [2024-11-19 01:46:32,416 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 77 predicate places. [2024-11-19 01:46:32,416 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 151 transitions, 2225 flow [2024-11-19 01:46:32,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:32,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:32,416 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:32,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:46:32,416 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:32,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:32,417 INFO L85 PathProgramCache]: Analyzing trace with hash 301537558, now seen corresponding path program 2 times [2024-11-19 01:46:32,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:32,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146455611] [2024-11-19 01:46:32,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:46:32,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:32,444 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:46:32,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:32,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:32,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146455611] [2024-11-19 01:46:32,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146455611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:32,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:32,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:32,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18225126] [2024-11-19 01:46:32,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:32,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:32,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:32,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:32,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:32,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:32,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 151 transitions, 2225 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:32,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:32,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:32,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:35,843 INFO L124 PetriNetUnfolderBase]: 17595/25033 cut-off events. [2024-11-19 01:46:35,844 INFO L125 PetriNetUnfolderBase]: For 151983/151983 co-relation queries the response was YES. [2024-11-19 01:46:35,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89815 conditions, 25033 events. 17595/25033 cut-off events. For 151983/151983 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 148398 event pairs, 5378 based on Foata normal form. 2/23791 useless extension candidates. Maximal degree in co-relation 89771. Up to 11468 conditions per place. [2024-11-19 01:46:36,059 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 226 selfloop transitions, 32 changer transitions 6/265 dead transitions. [2024-11-19 01:46:36,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 265 transitions, 3819 flow [2024-11-19 01:46:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:46:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:46:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-19 01:46:36,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5387755102040817 [2024-11-19 01:46:36,061 INFO L175 Difference]: Start difference. First operand has 120 places, 151 transitions, 2225 flow. Second operand 5 states and 132 transitions. [2024-11-19 01:46:36,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 265 transitions, 3819 flow [2024-11-19 01:46:36,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 265 transitions, 3565 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-11-19 01:46:36,642 INFO L231 Difference]: Finished difference. Result has 115 places, 169 transitions, 2401 flow [2024-11-19 01:46:36,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2401, PETRI_PLACES=115, PETRI_TRANSITIONS=169} [2024-11-19 01:46:36,642 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2024-11-19 01:46:36,642 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 169 transitions, 2401 flow [2024-11-19 01:46:36,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:36,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:36,643 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:36,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:46:36,643 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:36,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:36,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1489604512, now seen corresponding path program 3 times [2024-11-19 01:46:36,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:36,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142547627] [2024-11-19 01:46:36,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:46:36,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:36,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:46:36,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142547627] [2024-11-19 01:46:36,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142547627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:36,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:36,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:36,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307405702] [2024-11-19 01:46:36,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:36,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:36,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:36,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:36,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:36,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 169 transitions, 2401 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:36,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:36,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:36,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:40,149 INFO L124 PetriNetUnfolderBase]: 18070/25762 cut-off events. [2024-11-19 01:46:40,149 INFO L125 PetriNetUnfolderBase]: For 135583/135583 co-relation queries the response was YES. [2024-11-19 01:46:40,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92645 conditions, 25762 events. 18070/25762 cut-off events. For 135583/135583 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 154090 event pairs, 5757 based on Foata normal form. 3/25765 useless extension candidates. Maximal degree in co-relation 92605. Up to 11486 conditions per place. [2024-11-19 01:46:40,376 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 189 selfloop transitions, 33 changer transitions 65/288 dead transitions. [2024-11-19 01:46:40,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 288 transitions, 3791 flow [2024-11-19 01:46:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:46:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:46:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-11-19 01:46:40,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5578231292517006 [2024-11-19 01:46:40,377 INFO L175 Difference]: Start difference. First operand has 115 places, 169 transitions, 2401 flow. Second operand 6 states and 164 transitions. [2024-11-19 01:46:40,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 288 transitions, 3791 flow [2024-11-19 01:46:41,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 288 transitions, 3665 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-19 01:46:41,037 INFO L231 Difference]: Finished difference. Result has 121 places, 135 transitions, 1586 flow [2024-11-19 01:46:41,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1586, PETRI_PLACES=121, PETRI_TRANSITIONS=135} [2024-11-19 01:46:41,038 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-11-19 01:46:41,038 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 135 transitions, 1586 flow [2024-11-19 01:46:41,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:41,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:41,038 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:41,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 01:46:41,039 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:41,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:41,039 INFO L85 PathProgramCache]: Analyzing trace with hash -258202604, now seen corresponding path program 3 times [2024-11-19 01:46:41,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:41,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600399899] [2024-11-19 01:46:41,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:46:41,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:41,064 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:46:41,064 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:41,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:41,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600399899] [2024-11-19 01:46:41,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600399899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:41,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:41,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:41,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070152178] [2024-11-19 01:46:41,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:41,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:41,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:41,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:41,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:41,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:41,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 135 transitions, 1586 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:41,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:41,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:41,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:44,250 INFO L124 PetriNetUnfolderBase]: 15717/22277 cut-off events. [2024-11-19 01:46:44,250 INFO L125 PetriNetUnfolderBase]: For 109186/109186 co-relation queries the response was YES. [2024-11-19 01:46:44,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81112 conditions, 22277 events. 15717/22277 cut-off events. For 109186/109186 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 127594 event pairs, 5111 based on Foata normal form. 2/22279 useless extension candidates. Maximal degree in co-relation 81070. Up to 18338 conditions per place. [2024-11-19 01:46:44,393 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 155 selfloop transitions, 15 changer transitions 25/196 dead transitions. [2024-11-19 01:46:44,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 196 transitions, 2355 flow [2024-11-19 01:46:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:46:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:46:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-19 01:46:44,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44081632653061226 [2024-11-19 01:46:44,394 INFO L175 Difference]: Start difference. First operand has 121 places, 135 transitions, 1586 flow. Second operand 5 states and 108 transitions. [2024-11-19 01:46:44,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 196 transitions, 2355 flow [2024-11-19 01:46:44,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 196 transitions, 2090 flow, removed 75 selfloop flow, removed 14 redundant places. [2024-11-19 01:46:44,963 INFO L231 Difference]: Finished difference. Result has 104 places, 132 transitions, 1350 flow [2024-11-19 01:46:44,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1350, PETRI_PLACES=104, PETRI_TRANSITIONS=132} [2024-11-19 01:46:44,964 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2024-11-19 01:46:44,964 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 132 transitions, 1350 flow [2024-11-19 01:46:44,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:44,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:44,964 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:44,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 01:46:44,965 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:44,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 236374222, now seen corresponding path program 4 times [2024-11-19 01:46:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:44,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094937875] [2024-11-19 01:46:44,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:46:44,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:44,996 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:46:44,997 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:45,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:45,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094937875] [2024-11-19 01:46:45,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094937875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:45,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:45,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:45,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624318279] [2024-11-19 01:46:45,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:45,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:45,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:45,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:45,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 132 transitions, 1350 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:45,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:45,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:45,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:48,491 INFO L124 PetriNetUnfolderBase]: 16051/22697 cut-off events. [2024-11-19 01:46:48,491 INFO L125 PetriNetUnfolderBase]: For 79025/79025 co-relation queries the response was YES. [2024-11-19 01:46:48,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76766 conditions, 22697 events. 16051/22697 cut-off events. For 79025/79025 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 130593 event pairs, 3439 based on Foata normal form. 2/22699 useless extension candidates. Maximal degree in co-relation 76734. Up to 10859 conditions per place. [2024-11-19 01:46:48,657 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 169 selfloop transitions, 35 changer transitions 21/226 dead transitions. [2024-11-19 01:46:48,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 226 transitions, 2299 flow [2024-11-19 01:46:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:46:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:46:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-11-19 01:46:48,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2024-11-19 01:46:48,658 INFO L175 Difference]: Start difference. First operand has 104 places, 132 transitions, 1350 flow. Second operand 6 states and 149 transitions. [2024-11-19 01:46:48,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 226 transitions, 2299 flow [2024-11-19 01:46:48,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 226 transitions, 2221 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-11-19 01:46:48,960 INFO L231 Difference]: Finished difference. Result has 107 places, 143 transitions, 1546 flow [2024-11-19 01:46:48,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1546, PETRI_PLACES=107, PETRI_TRANSITIONS=143} [2024-11-19 01:46:48,960 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2024-11-19 01:46:48,960 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 143 transitions, 1546 flow [2024-11-19 01:46:48,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:48,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:48,960 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:48,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 01:46:48,961 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:48,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash 457431092, now seen corresponding path program 5 times [2024-11-19 01:46:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:48,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88942794] [2024-11-19 01:46:48,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:46:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:48,996 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:46:48,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:49,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:49,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88942794] [2024-11-19 01:46:49,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88942794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:49,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:49,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:49,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647688536] [2024-11-19 01:46:49,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:49,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:49,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:49,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:49,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:49,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:49,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 143 transitions, 1546 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:49,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:49,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:49,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:52,352 INFO L124 PetriNetUnfolderBase]: 15622/22016 cut-off events. [2024-11-19 01:46:52,353 INFO L125 PetriNetUnfolderBase]: For 80349/80349 co-relation queries the response was YES. [2024-11-19 01:46:52,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76553 conditions, 22016 events. 15622/22016 cut-off events. For 80349/80349 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 125441 event pairs, 4657 based on Foata normal form. 2/22018 useless extension candidates. Maximal degree in co-relation 76520. Up to 9533 conditions per place. [2024-11-19 01:46:52,470 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 153 selfloop transitions, 40 changer transitions 17/211 dead transitions. [2024-11-19 01:46:52,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 211 transitions, 2255 flow [2024-11-19 01:46:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:46:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:46:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-19 01:46:52,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-11-19 01:46:52,471 INFO L175 Difference]: Start difference. First operand has 107 places, 143 transitions, 1546 flow. Second operand 5 states and 128 transitions. [2024-11-19 01:46:52,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 211 transitions, 2255 flow [2024-11-19 01:46:52,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 211 transitions, 2188 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-11-19 01:46:52,657 INFO L231 Difference]: Finished difference. Result has 109 places, 141 transitions, 1549 flow [2024-11-19 01:46:52,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1549, PETRI_PLACES=109, PETRI_TRANSITIONS=141} [2024-11-19 01:46:52,658 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-11-19 01:46:52,658 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 141 transitions, 1549 flow [2024-11-19 01:46:52,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:52,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:52,658 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:52,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 01:46:52,658 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:52,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:52,658 INFO L85 PathProgramCache]: Analyzing trace with hash 456723776, now seen corresponding path program 6 times [2024-11-19 01:46:52,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:52,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334382229] [2024-11-19 01:46:52,659 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:46:52,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:52,678 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:46:52,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:52,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:52,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334382229] [2024-11-19 01:46:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334382229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:52,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:52,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:46:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55948492] [2024-11-19 01:46:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:52,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:46:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:46:52,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:46:52,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:52,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 141 transitions, 1549 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:52,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:52,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:52,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:55,750 INFO L124 PetriNetUnfolderBase]: 15383/21639 cut-off events. [2024-11-19 01:46:55,750 INFO L125 PetriNetUnfolderBase]: For 80753/80753 co-relation queries the response was YES. [2024-11-19 01:46:55,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76115 conditions, 21639 events. 15383/21639 cut-off events. For 80753/80753 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 122752 event pairs, 5704 based on Foata normal form. 1/21640 useless extension candidates. Maximal degree in co-relation 76081. Up to 12396 conditions per place. [2024-11-19 01:46:55,889 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 141 selfloop transitions, 26 changer transitions 20/188 dead transitions. [2024-11-19 01:46:55,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 188 transitions, 2092 flow [2024-11-19 01:46:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:46:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:46:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-19 01:46:55,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4448979591836735 [2024-11-19 01:46:55,890 INFO L175 Difference]: Start difference. First operand has 109 places, 141 transitions, 1549 flow. Second operand 5 states and 109 transitions. [2024-11-19 01:46:55,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 188 transitions, 2092 flow [2024-11-19 01:46:56,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 188 transitions, 2030 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-19 01:46:56,309 INFO L231 Difference]: Finished difference. Result has 109 places, 139 transitions, 1507 flow [2024-11-19 01:46:56,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1507, PETRI_PLACES=109, PETRI_TRANSITIONS=139} [2024-11-19 01:46:56,310 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-11-19 01:46:56,310 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 139 transitions, 1507 flow [2024-11-19 01:46:56,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 01:46:56,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:56,310 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:56,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 01:46:56,310 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:56,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash -866412173, now seen corresponding path program 1 times [2024-11-19 01:46:56,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:56,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859756427] [2024-11-19 01:46:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:46:56,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:46:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:56,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:56,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859756427] [2024-11-19 01:46:56,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859756427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:56,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:56,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:46:56,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230730943] [2024-11-19 01:46:56,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:56,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:46:56,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:56,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:46:56,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:46:56,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:56,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 139 transitions, 1507 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:46:56,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:56,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:56,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:46:59,072 INFO L124 PetriNetUnfolderBase]: 15712/22105 cut-off events. [2024-11-19 01:46:59,072 INFO L125 PetriNetUnfolderBase]: For 86690/86690 co-relation queries the response was YES. [2024-11-19 01:46:59,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76063 conditions, 22105 events. 15712/22105 cut-off events. For 86690/86690 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 125237 event pairs, 4136 based on Foata normal form. 178/22283 useless extension candidates. Maximal degree in co-relation 76030. Up to 16649 conditions per place. [2024-11-19 01:46:59,254 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 164 selfloop transitions, 17 changer transitions 0/182 dead transitions. [2024-11-19 01:46:59,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 182 transitions, 2052 flow [2024-11-19 01:46:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:46:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:46:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-19 01:46:59,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-11-19 01:46:59,255 INFO L175 Difference]: Start difference. First operand has 109 places, 139 transitions, 1507 flow. Second operand 4 states and 96 transitions. [2024-11-19 01:46:59,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 182 transitions, 2052 flow [2024-11-19 01:46:59,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 182 transitions, 1907 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-19 01:46:59,744 INFO L231 Difference]: Finished difference. Result has 103 places, 138 transitions, 1418 flow [2024-11-19 01:46:59,745 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1418, PETRI_PLACES=103, PETRI_TRANSITIONS=138} [2024-11-19 01:46:59,745 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-11-19 01:46:59,745 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 138 transitions, 1418 flow [2024-11-19 01:46:59,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:46:59,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:59,745 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:59,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 01:46:59,746 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:59,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:59,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1829364105, now seen corresponding path program 2 times [2024-11-19 01:46:59,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:59,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473192557] [2024-11-19 01:46:59,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:46:59,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:46:59,765 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:46:59,765 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:46:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:46:59,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:46:59,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473192557] [2024-11-19 01:46:59,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473192557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:46:59,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:46:59,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:46:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138286437] [2024-11-19 01:46:59,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:46:59,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:46:59,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:46:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:46:59,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:46:59,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:46:59,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 138 transitions, 1418 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:46:59,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:46:59,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:46:59,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:02,472 INFO L124 PetriNetUnfolderBase]: 15037/21202 cut-off events. [2024-11-19 01:47:02,472 INFO L125 PetriNetUnfolderBase]: For 65789/65789 co-relation queries the response was YES. [2024-11-19 01:47:02,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70277 conditions, 21202 events. 15037/21202 cut-off events. For 65789/65789 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 118775 event pairs, 2861 based on Foata normal form. 137/21339 useless extension candidates. Maximal degree in co-relation 70245. Up to 16842 conditions per place. [2024-11-19 01:47:02,583 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 149 selfloop transitions, 17 changer transitions 0/167 dead transitions. [2024-11-19 01:47:02,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 167 transitions, 1792 flow [2024-11-19 01:47:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:02,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-19 01:47:02,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846938775510204 [2024-11-19 01:47:02,584 INFO L175 Difference]: Start difference. First operand has 103 places, 138 transitions, 1418 flow. Second operand 4 states and 95 transitions. [2024-11-19 01:47:02,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 167 transitions, 1792 flow [2024-11-19 01:47:02,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 167 transitions, 1739 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-19 01:47:02,827 INFO L231 Difference]: Finished difference. Result has 101 places, 128 transitions, 1289 flow [2024-11-19 01:47:02,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1289, PETRI_PLACES=101, PETRI_TRANSITIONS=128} [2024-11-19 01:47:02,828 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-11-19 01:47:02,828 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 128 transitions, 1289 flow [2024-11-19 01:47:02,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:47:02,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:02,828 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:02,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 01:47:02,828 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:02,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash -677609169, now seen corresponding path program 3 times [2024-11-19 01:47:02,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:02,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067856640] [2024-11-19 01:47:02,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:02,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:02,850 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:47:02,850 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:47:02,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:02,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067856640] [2024-11-19 01:47:02,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067856640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:02,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:02,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:47:02,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752837272] [2024-11-19 01:47:02,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:02,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:02,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:02,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:02,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:47:02,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:47:02,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 128 transitions, 1289 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:47:02,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:02,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:47:02,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:05,323 INFO L124 PetriNetUnfolderBase]: 14033/19740 cut-off events. [2024-11-19 01:47:05,323 INFO L125 PetriNetUnfolderBase]: For 54311/54311 co-relation queries the response was YES. [2024-11-19 01:47:05,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64362 conditions, 19740 events. 14033/19740 cut-off events. For 54311/54311 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 108291 event pairs, 8852 based on Foata normal form. 34/19774 useless extension candidates. Maximal degree in co-relation 64332. Up to 17840 conditions per place. [2024-11-19 01:47:05,475 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 146 selfloop transitions, 7 changer transitions 4/158 dead transitions. [2024-11-19 01:47:05,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 158 transitions, 1700 flow [2024-11-19 01:47:05,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-19 01:47:05,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-19 01:47:05,476 INFO L175 Difference]: Start difference. First operand has 101 places, 128 transitions, 1289 flow. Second operand 4 states and 84 transitions. [2024-11-19 01:47:05,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 158 transitions, 1700 flow [2024-11-19 01:47:05,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 158 transitions, 1677 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:05,629 INFO L231 Difference]: Finished difference. Result has 103 places, 125 transitions, 1241 flow [2024-11-19 01:47:05,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1241, PETRI_PLACES=103, PETRI_TRANSITIONS=125} [2024-11-19 01:47:05,630 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-11-19 01:47:05,630 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 125 transitions, 1241 flow [2024-11-19 01:47:05,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:47:05,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:05,630 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:05,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 01:47:05,631 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:05,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:05,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1649938205, now seen corresponding path program 4 times [2024-11-19 01:47:05,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:05,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501275141] [2024-11-19 01:47:05,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:05,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:05,658 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:05,658 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:47:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501275141] [2024-11-19 01:47:05,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501275141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:05,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:05,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:47:05,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633852168] [2024-11-19 01:47:05,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:05,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:05,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:47:05,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:47:05,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 125 transitions, 1241 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:47:05,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:05,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:47:05,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:08,065 INFO L124 PetriNetUnfolderBase]: 13638/19175 cut-off events. [2024-11-19 01:47:08,066 INFO L125 PetriNetUnfolderBase]: For 50241/50241 co-relation queries the response was YES. [2024-11-19 01:47:08,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62069 conditions, 19175 events. 13638/19175 cut-off events. For 50241/50241 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 104632 event pairs, 4347 based on Foata normal form. 32/19207 useless extension candidates. Maximal degree in co-relation 62039. Up to 18541 conditions per place. [2024-11-19 01:47:08,228 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 124 selfloop transitions, 7 changer transitions 12/144 dead transitions. [2024-11-19 01:47:08,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 144 transitions, 1548 flow [2024-11-19 01:47:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-19 01:47:08,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.413265306122449 [2024-11-19 01:47:08,229 INFO L175 Difference]: Start difference. First operand has 103 places, 125 transitions, 1241 flow. Second operand 4 states and 81 transitions. [2024-11-19 01:47:08,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 144 transitions, 1548 flow [2024-11-19 01:47:08,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 144 transitions, 1535 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:08,387 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 1142 flow [2024-11-19 01:47:08,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1142, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2024-11-19 01:47:08,388 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-11-19 01:47:08,388 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 1142 flow [2024-11-19 01:47:08,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:47:08,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:08,388 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:08,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 01:47:08,389 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:08,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:08,389 INFO L85 PathProgramCache]: Analyzing trace with hash -842224581, now seen corresponding path program 5 times [2024-11-19 01:47:08,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:08,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463719074] [2024-11-19 01:47:08,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:47:08,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:08,432 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 01:47:08,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 01:47:08,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:08,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463719074] [2024-11-19 01:47:08,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463719074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:08,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:08,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:47:08,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647419068] [2024-11-19 01:47:08,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:08,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:08,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:47:08,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-19 01:47:08,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 1142 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:47:08,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:08,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-19 01:47:08,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:10,695 INFO L124 PetriNetUnfolderBase]: 12867/18063 cut-off events. [2024-11-19 01:47:10,696 INFO L125 PetriNetUnfolderBase]: For 47936/47936 co-relation queries the response was YES. [2024-11-19 01:47:10,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58767 conditions, 18063 events. 12867/18063 cut-off events. For 47936/47936 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 97220 event pairs, 8820 based on Foata normal form. 32/18095 useless extension candidates. Maximal degree in co-relation 58738. Up to 17840 conditions per place. [2024-11-19 01:47:10,834 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 110 selfloop transitions, 0 changer transitions 16/127 dead transitions. [2024-11-19 01:47:10,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 127 transitions, 1381 flow [2024-11-19 01:47:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:10,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-19 01:47:10,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3520408163265306 [2024-11-19 01:47:10,836 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 1142 flow. Second operand 4 states and 69 transitions. [2024-11-19 01:47:10,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 127 transitions, 1381 flow