./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-subst.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 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:41:30,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:41:30,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:41:30,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:41:30,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:41:30,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:41:30,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:41:30,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:41:30,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:41:30,142 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:41:30,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:41:30,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:41:30,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:41:30,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:41:30,144 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:41:30,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:41:30,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:41:30,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:41:30,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:41:30,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:41:30,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:41:30,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:41:30,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:41:30,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:41:30,152 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:41:30,152 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:41:30,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:41:30,154 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:41:30,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:41:30,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:41:30,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:41:30,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:41:30,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:41:30,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:41:30,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:41:30,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:41:30,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:41:30,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:41:30,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:41:30,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:41:30,159 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:41:30,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:41:30,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2024-11-09 02:41:30,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:41:30,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:41:30,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:41:30,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:41:30,448 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:41:30,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-11-09 02:41:31,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:41:32,115 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:41:32,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2024-11-09 02:41:32,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9db3055b1/42bc7b321e6643d7b551e7142aac3885/FLAGb7a14c85b [2024-11-09 02:41:32,144 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9db3055b1/42bc7b321e6643d7b551e7142aac3885 [2024-11-09 02:41:32,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:41:32,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:41:32,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:41:32,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:41:32,156 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:41:32,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597f78ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32, skipping insertion in model container [2024-11-09 02:41:32,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,188 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:41:32,480 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-subst.wvr.c[6540,6553] [2024-11-09 02:41:32,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:41:32,501 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:41:32,556 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-subst.wvr.c[6540,6553] [2024-11-09 02:41:32,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:41:32,589 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:41:32,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32 WrapperNode [2024-11-09 02:41:32,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:41:32,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:41:32,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:41:32,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:41:32,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,686 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 603 [2024-11-09 02:41:32,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:41:32,691 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:41:32,691 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:41:32,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:41:32,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,758 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]. [2024-11-09 02:41:32,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,812 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:41:32,813 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:41:32,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:41:32,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:41:32,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (1/1) ... [2024-11-09 02:41:32,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:41:32,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:32,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:41:32,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:41:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:41:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:41:32,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:41:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:41:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:41:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:41:32,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:41:32,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:41:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:41:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:41:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:41:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:41:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:41:32,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:41:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:41:32,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:41:32,934 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:41:33,070 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:41:33,072 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:41:34,038 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:41:34,038 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:41:34,898 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:41:34,899 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:41:34,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:41:34 BoogieIcfgContainer [2024-11-09 02:41:34,899 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:41:34,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:41:34,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:41:34,907 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:41:34,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:41:32" (1/3) ... [2024-11-09 02:41:34,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b265dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:41:34, skipping insertion in model container [2024-11-09 02:41:34,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:41:32" (2/3) ... [2024-11-09 02:41:34,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b265dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:41:34, skipping insertion in model container [2024-11-09 02:41:34,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:41:34" (3/3) ... [2024-11-09 02:41:34,911 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2024-11-09 02:41:34,932 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:41:34,932 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:41:34,933 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:41:35,083 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:41:35,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-09 02:41:35,179 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-09 02:41:35,179 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:41:35,184 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. [2024-11-09 02:41:35,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-09 02:41:35,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-09 02:41:35,202 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:41:35,212 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;@6fc47ab5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:41:35,213 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:41:35,244 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:41:35,244 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-09 02:41:35,244 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:41:35,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:35,245 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] [2024-11-09 02:41:35,246 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:41:35,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash 46384734, now seen corresponding path program 1 times [2024-11-09 02:41:35,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:35,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026485729] [2024-11-09 02:41:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:35,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:41:35,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:35,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026485729] [2024-11-09 02:41:35,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026485729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:35,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:41:35,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:41:35,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409324921] [2024-11-09 02:41:35,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:35,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:41:35,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:35,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:41:35,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:41:35,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:41:35,778 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) [2024-11-09 02:41:35,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:35,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:41:35,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:36,663 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2024-11-09 02:41:36,664 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-11-09 02:41:36,674 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. [2024-11-09 02:41:36,694 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-11-09 02:41:36,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2024-11-09 02:41:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:41:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:41:36,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-09 02:41:36,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-11-09 02:41:36,731 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2024-11-09 02:41:36,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2024-11-09 02:41:36,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:41:36,739 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2024-11-09 02:41:36,741 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} [2024-11-09 02:41:36,745 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-11-09 02:41:36,745 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2024-11-09 02:41:36,746 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) [2024-11-09 02:41:36,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:36,746 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] [2024-11-09 02:41:36,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:41:36,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:41:36,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:36,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2050377923, now seen corresponding path program 1 times [2024-11-09 02:41:36,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:36,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922399123] [2024-11-09 02:41:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:36,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:41:36,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:36,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922399123] [2024-11-09 02:41:36,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922399123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:36,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479970104] [2024-11-09 02:41:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:36,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:36,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:36,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:41:36,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:41:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:37,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 02:41:37,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:41:37,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:41:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:41:37,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479970104] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:41:37,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:41:37,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-09 02:41:37,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645067911] [2024-11-09 02:41:37,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:41:37,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 02:41:37,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:37,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 02:41:37,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-09 02:41:37,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:41:37,358 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) [2024-11-09 02:41:37,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:37,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:41:37,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:38,161 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2024-11-09 02:41:38,161 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-09 02:41:38,164 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. [2024-11-09 02:41:38,178 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2024-11-09 02:41:38,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2024-11-09 02:41:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:41:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:41:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-11-09 02:41:38,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2024-11-09 02:41:38,180 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2024-11-09 02:41:38,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2024-11-09 02:41:38,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:41:38,182 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2024-11-09 02:41:38,183 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} [2024-11-09 02:41:38,183 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-11-09 02:41:38,184 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2024-11-09 02:41:38,184 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) [2024-11-09 02:41:38,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:38,184 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] [2024-11-09 02:41:38,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:41:38,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:38,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:41:38,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash 154946276, now seen corresponding path program 2 times [2024-11-09 02:41:38,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:38,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90510062] [2024-11-09 02:41:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:38,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 02:41:38,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:38,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90510062] [2024-11-09 02:41:38,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90510062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:38,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274264962] [2024-11-09 02:41:38,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:41:38,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:38,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:38,652 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:41:38,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:41:38,860 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 02:41:38,860 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:41:38,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:41:38,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 02:41:40,915 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:41:40,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274264962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:40,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:41:40,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-09 02:41:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407233633] [2024-11-09 02:41:40,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:40,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:41:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:41:40,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:41:40,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:41:40,922 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) [2024-11-09 02:41:40,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:40,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:41:40,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:42,404 INFO L124 PetriNetUnfolderBase]: 3141/4412 cut-off events. [2024-11-09 02:41:42,404 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-09 02:41:42,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8954 conditions, 4412 events. 3141/4412 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19275 event pairs, 1692 based on Foata normal form. 1/3561 useless extension candidates. Maximal degree in co-relation 8866. Up to 3132 conditions per place. [2024-11-09 02:41:42,428 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 93 selfloop transitions, 2 changer transitions 8/104 dead transitions. [2024-11-09 02:41:42,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 104 transitions, 530 flow [2024-11-09 02:41:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:41:42,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:41:42,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-11-09 02:41:42,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-11-09 02:41:42,431 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 112 transitions. [2024-11-09 02:41:42,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 104 transitions, 530 flow [2024-11-09 02:41:42,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 506 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-09 02:41:42,435 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 203 flow [2024-11-09 02:41:42,435 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-11-09 02:41:42,436 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-09 02:41:42,436 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 203 flow [2024-11-09 02:41:42,436 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) [2024-11-09 02:41:42,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:42,437 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] [2024-11-09 02:41:42,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:41:42,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 02:41:42,639 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:41:42,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:42,639 INFO L85 PathProgramCache]: Analyzing trace with hash -507933382, now seen corresponding path program 3 times [2024-11-09 02:41:42,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:42,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256047954] [2024-11-09 02:41:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:42,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:42,890 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 02:41:42,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:42,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256047954] [2024-11-09 02:41:42,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256047954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:42,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041790948] [2024-11-09 02:41:42,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:41:42,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:42,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:42,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:41:42,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:41:43,114 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-09 02:41:43,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:41:43,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 02:41:43,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 02:41:44,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:41:44,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041790948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:44,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:41:44,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-09 02:41:44,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309246147] [2024-11-09 02:41:44,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:44,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:41:44,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:41:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:41:44,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:41:44,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 203 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) [2024-11-09 02:41:44,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:44,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:41:44,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:46,266 INFO L124 PetriNetUnfolderBase]: 3904/5601 cut-off events. [2024-11-09 02:41:46,266 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-11-09 02:41:46,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 5601 events. 3904/5601 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26283 event pairs, 2311 based on Foata normal form. 1/5093 useless extension candidates. Maximal degree in co-relation 11841. Up to 3990 conditions per place. [2024-11-09 02:41:46,301 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 89 selfloop transitions, 3 changer transitions 8/101 dead transitions. [2024-11-09 02:41:46,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 517 flow [2024-11-09 02:41:46,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:41:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:41:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-09 02:41:46,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44081632653061226 [2024-11-09 02:41:46,303 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 203 flow. Second operand 5 states and 108 transitions. [2024-11-09 02:41:46,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 517 flow [2024-11-09 02:41:46,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 508 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 02:41:46,309 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 220 flow [2024-11-09 02:41:46,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-11-09 02:41:46,310 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-11-09 02:41:46,311 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 220 flow [2024-11-09 02:41:46,311 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) [2024-11-09 02:41:46,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:46,311 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] [2024-11-09 02:41:46,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:41:46,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:46,512 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:41:46,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:46,513 INFO L85 PathProgramCache]: Analyzing trace with hash -105214844, now seen corresponding path program 4 times [2024-11-09 02:41:46,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:46,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792672686] [2024-11-09 02:41:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:46,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 02:41:46,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:46,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792672686] [2024-11-09 02:41:46,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792672686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:41:46,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265335504] [2024-11-09 02:41:46,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:41:46,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:41:46,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:41:46,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:41:46,959 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:41:46,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:41:46,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:41:46,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:41:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 02:41:47,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:41:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 02:41:47,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265335504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:41:47,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:41:47,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 02:41:47,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933254399] [2024-11-09 02:41:47,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:41:47,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:41:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:47,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:41:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:41:47,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:41:47,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 220 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) [2024-11-09 02:41:47,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:47,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:41:47,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:48,096 INFO L124 PetriNetUnfolderBase]: 3875/5552 cut-off events. [2024-11-09 02:41:48,096 INFO L125 PetriNetUnfolderBase]: For 2123/2123 co-relation queries the response was YES. [2024-11-09 02:41:48,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12312 conditions, 5552 events. 3875/5552 cut-off events. For 2123/2123 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25529 event pairs, 3170 based on Foata normal form. 1/5044 useless extension candidates. Maximal degree in co-relation 12271. Up to 5531 conditions per place. [2024-11-09 02:41:48,135 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 40 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-11-09 02:41:48,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 354 flow [2024-11-09 02:41:48,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:41:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:41:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-09 02:41:48,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2024-11-09 02:41:48,138 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 220 flow. Second operand 7 states and 87 transitions. [2024-11-09 02:41:48,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 354 flow [2024-11-09 02:41:48,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 348 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 02:41:48,148 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 282 flow [2024-11-09 02:41:48,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-11-09 02:41:48,150 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-11-09 02:41:48,150 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 282 flow [2024-11-09 02:41:48,150 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) [2024-11-09 02:41:48,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:48,151 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] [2024-11-09 02:41:48,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:41:48,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:41:48,352 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:41:48,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:48,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1674624371, now seen corresponding path program 5 times [2024-11-09 02:41:48,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:48,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438768743] [2024-11-09 02:41:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:48,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:41:50,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:50,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438768743] [2024-11-09 02:41:50,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438768743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:50,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:41:50,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:41:50,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183513672] [2024-11-09 02:41:50,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:50,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:41:50,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:50,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:41:50,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:41:50,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:41:50,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 282 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) [2024-11-09 02:41:50,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:50,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:41:50,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:52,102 INFO L124 PetriNetUnfolderBase]: 4646/6750 cut-off events. [2024-11-09 02:41:52,102 INFO L125 PetriNetUnfolderBase]: For 1699/1699 co-relation queries the response was YES. [2024-11-09 02:41:52,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14742 conditions, 6750 events. 4646/6750 cut-off events. For 1699/1699 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 32655 event pairs, 3079 based on Foata normal form. 1/6160 useless extension candidates. Maximal degree in co-relation 14629. Up to 5164 conditions per place. [2024-11-09 02:41:52,137 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 95 selfloop transitions, 7 changer transitions 5/108 dead transitions. [2024-11-09 02:41:52,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 621 flow [2024-11-09 02:41:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:41:52,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:41:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-11-09 02:41:52,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-11-09 02:41:52,139 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 282 flow. Second operand 5 states and 110 transitions. [2024-11-09 02:41:52,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 621 flow [2024-11-09 02:41:52,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 108 transitions, 585 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-09 02:41:52,150 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 306 flow [2024-11-09 02:41:52,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-11-09 02:41:52,153 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-11-09 02:41:52,153 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 306 flow [2024-11-09 02:41:52,154 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) [2024-11-09 02:41:52,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:52,154 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] [2024-11-09 02:41:52,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:41:52,154 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:41:52,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:52,155 INFO L85 PathProgramCache]: Analyzing trace with hash -763439597, now seen corresponding path program 6 times [2024-11-09 02:41:52,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:52,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006134819] [2024-11-09 02:41:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:52,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:41:53,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:53,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006134819] [2024-11-09 02:41:53,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006134819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:53,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:41:53,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:41:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755688868] [2024-11-09 02:41:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:53,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:41:53,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:41:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:41:53,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:41:53,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 306 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) [2024-11-09 02:41:53,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:53,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:41:53,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:55,493 INFO L124 PetriNetUnfolderBase]: 7243/10404 cut-off events. [2024-11-09 02:41:55,493 INFO L125 PetriNetUnfolderBase]: For 5609/5609 co-relation queries the response was YES. [2024-11-09 02:41:55,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23916 conditions, 10404 events. 7243/10404 cut-off events. For 5609/5609 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 55810 event pairs, 2645 based on Foata normal form. 1/9616 useless extension candidates. Maximal degree in co-relation 23817. Up to 4983 conditions per place. [2024-11-09 02:41:55,544 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 115 selfloop transitions, 17 changer transitions 2/135 dead transitions. [2024-11-09 02:41:55,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 135 transitions, 777 flow [2024-11-09 02:41:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:41:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:41:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-09 02:41:55,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2024-11-09 02:41:55,549 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 306 flow. Second operand 5 states and 131 transitions. [2024-11-09 02:41:55,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 135 transitions, 777 flow [2024-11-09 02:41:55,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 135 transitions, 766 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:41:55,570 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 452 flow [2024-11-09 02:41:55,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2024-11-09 02:41:55,571 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-11-09 02:41:55,571 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 452 flow [2024-11-09 02:41:55,571 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) [2024-11-09 02:41:55,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:55,571 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] [2024-11-09 02:41:55,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:41:55,572 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:41:55,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1901130979, now seen corresponding path program 7 times [2024-11-09 02:41:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:55,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964521168] [2024-11-09 02:41:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:55,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:41:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:41:57,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:41:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964521168] [2024-11-09 02:41:57,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964521168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:41:57,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:41:57,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:41:57,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838384423] [2024-11-09 02:41:57,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:41:57,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:41:57,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:41:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:41:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:41:57,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:41:57,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 452 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) [2024-11-09 02:41:57,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:41:57,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:41:57,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:41:58,968 INFO L124 PetriNetUnfolderBase]: 8259/11916 cut-off events. [2024-11-09 02:41:58,969 INFO L125 PetriNetUnfolderBase]: For 12329/12329 co-relation queries the response was YES. [2024-11-09 02:41:59,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31690 conditions, 11916 events. 8259/11916 cut-off events. For 12329/12329 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 64690 event pairs, 4207 based on Foata normal form. 1/11917 useless extension candidates. Maximal degree in co-relation 31588. Up to 7243 conditions per place. [2024-11-09 02:41:59,110 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 133 selfloop transitions, 21 changer transitions 2/157 dead transitions. [2024-11-09 02:41:59,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 157 transitions, 1047 flow [2024-11-09 02:41:59,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:41:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:41:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-11-09 02:41:59,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-11-09 02:41:59,112 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 452 flow. Second operand 5 states and 135 transitions. [2024-11-09 02:41:59,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 157 transitions, 1047 flow [2024-11-09 02:41:59,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 157 transitions, 1035 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-09 02:41:59,168 INFO L231 Difference]: Finished difference. Result has 78 places, 94 transitions, 636 flow [2024-11-09 02:41:59,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=636, PETRI_PLACES=78, PETRI_TRANSITIONS=94} [2024-11-09 02:41:59,171 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-11-09 02:41:59,171 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 94 transitions, 636 flow [2024-11-09 02:41:59,172 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) [2024-11-09 02:41:59,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:41:59,172 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] [2024-11-09 02:41:59,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:41:59,172 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:41:59,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:41:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash 186084019, now seen corresponding path program 8 times [2024-11-09 02:41:59,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:41:59,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118623626] [2024-11-09 02:41:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:41:59,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:41:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:42:00,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:00,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118623626] [2024-11-09 02:42:00,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118623626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:00,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:00,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:00,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497243743] [2024-11-09 02:42:00,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:00,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:00,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:00,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:00,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:00,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 94 transitions, 636 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) [2024-11-09 02:42:00,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:00,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:00,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:02,432 INFO L124 PetriNetUnfolderBase]: 8359/12076 cut-off events. [2024-11-09 02:42:02,432 INFO L125 PetriNetUnfolderBase]: For 21820/21820 co-relation queries the response was YES. [2024-11-09 02:42:02,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35871 conditions, 12076 events. 8359/12076 cut-off events. For 21820/21820 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 64873 event pairs, 5131 based on Foata normal form. 1/12077 useless extension candidates. Maximal degree in co-relation 35765. Up to 9400 conditions per place. [2024-11-09 02:42:02,496 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 135 selfloop transitions, 9 changer transitions 4/149 dead transitions. [2024-11-09 02:42:02,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 149 transitions, 1173 flow [2024-11-09 02:42:02,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-11-09 02:42:02,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-11-09 02:42:02,498 INFO L175 Difference]: Start difference. First operand has 78 places, 94 transitions, 636 flow. Second operand 5 states and 110 transitions. [2024-11-09 02:42:02,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 149 transitions, 1173 flow [2024-11-09 02:42:02,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 149 transitions, 1163 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:02,549 INFO L231 Difference]: Finished difference. Result has 84 places, 98 transitions, 710 flow [2024-11-09 02:42:02,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=710, PETRI_PLACES=84, PETRI_TRANSITIONS=98} [2024-11-09 02:42:02,550 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-11-09 02:42:02,551 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 98 transitions, 710 flow [2024-11-09 02:42:02,551 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) [2024-11-09 02:42:02,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:02,551 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] [2024-11-09 02:42:02,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:42:02,551 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:02,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1829421042, now seen corresponding path program 1 times [2024-11-09 02:42:02,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:02,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777672346] [2024-11-09 02:42:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:02,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:42:02,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:02,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777672346] [2024-11-09 02:42:02,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777672346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:02,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:02,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:02,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959359335] [2024-11-09 02:42:02,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:02,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:02,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:02,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:02,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:02,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:02,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 98 transitions, 710 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) [2024-11-09 02:42:02,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:02,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:02,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:04,414 INFO L124 PetriNetUnfolderBase]: 9017/13049 cut-off events. [2024-11-09 02:42:04,414 INFO L125 PetriNetUnfolderBase]: For 26451/26451 co-relation queries the response was YES. [2024-11-09 02:42:04,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39266 conditions, 13049 events. 9017/13049 cut-off events. For 26451/26451 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 73902 event pairs, 2508 based on Foata normal form. 3/13052 useless extension candidates. Maximal degree in co-relation 39157. Up to 9163 conditions per place. [2024-11-09 02:42:04,501 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 108 selfloop transitions, 7 changer transitions 40/156 dead transitions. [2024-11-09 02:42:04,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 156 transitions, 1340 flow [2024-11-09 02:42:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-09 02:42:04,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-11-09 02:42:04,503 INFO L175 Difference]: Start difference. First operand has 84 places, 98 transitions, 710 flow. Second operand 4 states and 103 transitions. [2024-11-09 02:42:04,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 156 transitions, 1340 flow [2024-11-09 02:42:04,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 156 transitions, 1325 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:04,562 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 672 flow [2024-11-09 02:42:04,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=672, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-11-09 02:42:04,563 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-11-09 02:42:04,563 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 672 flow [2024-11-09 02:42:04,563 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) [2024-11-09 02:42:04,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:04,564 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] [2024-11-09 02:42:04,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 02:42:04,564 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:04,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:04,564 INFO L85 PathProgramCache]: Analyzing trace with hash 856509064, now seen corresponding path program 2 times [2024-11-09 02:42:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:04,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530212272] [2024-11-09 02:42:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:04,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:42:04,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:04,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530212272] [2024-11-09 02:42:04,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530212272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:04,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:04,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:04,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770775658] [2024-11-09 02:42:04,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:04,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:04,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:04,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:04,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:04,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 672 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) [2024-11-09 02:42:04,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:04,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:04,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:07,309 INFO L124 PetriNetUnfolderBase]: 11865/17039 cut-off events. [2024-11-09 02:42:07,310 INFO L125 PetriNetUnfolderBase]: For 30504/30504 co-relation queries the response was YES. [2024-11-09 02:42:07,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50398 conditions, 17039 events. 11865/17039 cut-off events. For 30504/30504 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 96789 event pairs, 3489 based on Foata normal form. 1/17040 useless extension candidates. Maximal degree in co-relation 50297. Up to 7451 conditions per place. [2024-11-09 02:42:07,500 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 152 selfloop transitions, 27 changer transitions 6/186 dead transitions. [2024-11-09 02:42:07,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 186 transitions, 1536 flow [2024-11-09 02:42:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-11-09 02:42:07,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.563265306122449 [2024-11-09 02:42:07,502 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 672 flow. Second operand 5 states and 138 transitions. [2024-11-09 02:42:07,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 186 transitions, 1536 flow [2024-11-09 02:42:07,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 186 transitions, 1513 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:07,616 INFO L231 Difference]: Finished difference. Result has 93 places, 109 transitions, 921 flow [2024-11-09 02:42:07,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=921, PETRI_PLACES=93, PETRI_TRANSITIONS=109} [2024-11-09 02:42:07,617 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-11-09 02:42:07,617 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 109 transitions, 921 flow [2024-11-09 02:42:07,617 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) [2024-11-09 02:42:07,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:07,618 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] [2024-11-09 02:42:07,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:42:07,618 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:07,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:07,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1750016208, now seen corresponding path program 1 times [2024-11-09 02:42:07,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:07,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087188272] [2024-11-09 02:42:07,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:07,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:42:07,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:07,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087188272] [2024-11-09 02:42:07,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087188272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:07,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:07,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:07,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167875784] [2024-11-09 02:42:07,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:07,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:07,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:07,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:07,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:07,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:07,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 109 transitions, 921 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) [2024-11-09 02:42:07,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:07,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:07,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:10,143 INFO L124 PetriNetUnfolderBase]: 12725/18307 cut-off events. [2024-11-09 02:42:10,144 INFO L125 PetriNetUnfolderBase]: For 44466/44466 co-relation queries the response was YES. [2024-11-09 02:42:10,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58167 conditions, 18307 events. 12725/18307 cut-off events. For 44466/44466 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 105177 event pairs, 7669 based on Foata normal form. 4/18311 useless extension candidates. Maximal degree in co-relation 58055. Up to 12847 conditions per place. [2024-11-09 02:42:10,324 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 119 selfloop transitions, 4 changer transitions 37/161 dead transitions. [2024-11-09 02:42:10,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 161 transitions, 1504 flow [2024-11-09 02:42:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-09 02:42:10,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-11-09 02:42:10,326 INFO L175 Difference]: Start difference. First operand has 93 places, 109 transitions, 921 flow. Second operand 4 states and 102 transitions. [2024-11-09 02:42:10,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 161 transitions, 1504 flow [2024-11-09 02:42:10,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 161 transitions, 1480 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-11-09 02:42:10,499 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 814 flow [2024-11-09 02:42:10,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=814, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2024-11-09 02:42:10,500 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-11-09 02:42:10,500 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 814 flow [2024-11-09 02:42:10,500 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) [2024-11-09 02:42:10,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:10,501 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] [2024-11-09 02:42:10,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:42:10,501 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:10,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1115814632, now seen corresponding path program 1 times [2024-11-09 02:42:10,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:10,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181542893] [2024-11-09 02:42:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:42:10,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:10,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181542893] [2024-11-09 02:42:10,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181542893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:10,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:10,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:42:10,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117813546] [2024-11-09 02:42:10,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:10,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:42:10,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:10,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:42:10,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:42:10,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:10,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 814 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:10,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:10,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:10,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:13,164 INFO L124 PetriNetUnfolderBase]: 11864/17088 cut-off events. [2024-11-09 02:42:13,164 INFO L125 PetriNetUnfolderBase]: For 37922/37922 co-relation queries the response was YES. [2024-11-09 02:42:13,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51651 conditions, 17088 events. 11864/17088 cut-off events. For 37922/37922 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 96297 event pairs, 7843 based on Foata normal form. 410/17498 useless extension candidates. Maximal degree in co-relation 51538. Up to 13057 conditions per place. [2024-11-09 02:42:13,291 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 109 selfloop transitions, 13 changer transitions 2/125 dead transitions. [2024-11-09 02:42:13,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 125 transitions, 1187 flow [2024-11-09 02:42:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:42:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:42:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-09 02:42:13,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-11-09 02:42:13,293 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 814 flow. Second operand 3 states and 78 transitions. [2024-11-09 02:42:13,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 125 transitions, 1187 flow [2024-11-09 02:42:13,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 125 transitions, 1156 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:13,342 INFO L231 Difference]: Finished difference. Result has 95 places, 98 transitions, 814 flow [2024-11-09 02:42:13,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=814, PETRI_PLACES=95, PETRI_TRANSITIONS=98} [2024-11-09 02:42:13,343 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-11-09 02:42:13,343 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 98 transitions, 814 flow [2024-11-09 02:42:13,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:13,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:13,344 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] [2024-11-09 02:42:13,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 02:42:13,344 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:13,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:13,345 INFO L85 PathProgramCache]: Analyzing trace with hash -805292702, now seen corresponding path program 3 times [2024-11-09 02:42:13,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:13,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458044413] [2024-11-09 02:42:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:13,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:42:13,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:13,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458044413] [2024-11-09 02:42:13,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458044413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:13,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:13,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:13,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752580785] [2024-11-09 02:42:13,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:13,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:13,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:13,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:13,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:13,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:13,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 98 transitions, 814 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) [2024-11-09 02:42:13,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:13,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:13,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:16,705 INFO L124 PetriNetUnfolderBase]: 13079/18935 cut-off events. [2024-11-09 02:42:16,706 INFO L125 PetriNetUnfolderBase]: For 38584/38584 co-relation queries the response was YES. [2024-11-09 02:42:16,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57243 conditions, 18935 events. 13079/18935 cut-off events. For 38584/38584 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 110248 event pairs, 3965 based on Foata normal form. 4/18939 useless extension candidates. Maximal degree in co-relation 57130. Up to 6637 conditions per place. [2024-11-09 02:42:16,829 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 151 selfloop transitions, 31 changer transitions 29/212 dead transitions. [2024-11-09 02:42:16,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 212 transitions, 1734 flow [2024-11-09 02:42:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:42:16,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:42:16,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-11-09 02:42:16,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-09 02:42:16,831 INFO L175 Difference]: Start difference. First operand has 95 places, 98 transitions, 814 flow. Second operand 6 states and 177 transitions. [2024-11-09 02:42:16,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 212 transitions, 1734 flow [2024-11-09 02:42:16,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 212 transitions, 1718 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:16,886 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 859 flow [2024-11-09 02:42:16,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=859, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2024-11-09 02:42:16,888 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-11-09 02:42:16,888 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 859 flow [2024-11-09 02:42:16,888 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) [2024-11-09 02:42:16,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:16,889 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] [2024-11-09 02:42:16,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 02:42:16,889 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:16,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash 755111324, now seen corresponding path program 2 times [2024-11-09 02:42:16,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:16,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053046546] [2024-11-09 02:42:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:16,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 02:42:17,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053046546] [2024-11-09 02:42:17,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053046546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:17,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:17,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404563601] [2024-11-09 02:42:17,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:17,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:17,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:17,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:17,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:17,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 859 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) [2024-11-09 02:42:17,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:17,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:17,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:19,211 INFO L124 PetriNetUnfolderBase]: 11398/16373 cut-off events. [2024-11-09 02:42:19,211 INFO L125 PetriNetUnfolderBase]: For 44400/44400 co-relation queries the response was YES. [2024-11-09 02:42:19,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52690 conditions, 16373 events. 11398/16373 cut-off events. For 44400/44400 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 90703 event pairs, 4750 based on Foata normal form. 2/16375 useless extension candidates. Maximal degree in co-relation 52655. Up to 15168 conditions per place. [2024-11-09 02:42:19,332 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 108 selfloop transitions, 7 changer transitions 15/131 dead transitions. [2024-11-09 02:42:19,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 1273 flow [2024-11-09 02:42:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:19,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-09 02:42:19,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-11-09 02:42:19,333 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 859 flow. Second operand 4 states and 90 transitions. [2024-11-09 02:42:19,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 1273 flow [2024-11-09 02:42:19,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 131 transitions, 1226 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:19,421 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 816 flow [2024-11-09 02:42:19,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=816, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2024-11-09 02:42:19,422 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-11-09 02:42:19,422 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 816 flow [2024-11-09 02:42:19,422 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) [2024-11-09 02:42:19,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:19,422 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:19,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 02:42:19,422 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:19,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash 938409400, now seen corresponding path program 1 times [2024-11-09 02:42:19,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:19,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911209305] [2024-11-09 02:42:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:19,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 02:42:20,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:20,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911209305] [2024-11-09 02:42:20,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911209305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:20,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:20,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:20,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235674812] [2024-11-09 02:42:20,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:20,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:20,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:20,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:20,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 816 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:20,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:20,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:20,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:22,210 INFO L124 PetriNetUnfolderBase]: 11732/16963 cut-off events. [2024-11-09 02:42:22,210 INFO L125 PetriNetUnfolderBase]: For 42246/42246 co-relation queries the response was YES. [2024-11-09 02:42:22,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53407 conditions, 16963 events. 11732/16963 cut-off events. For 42246/42246 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 95367 event pairs, 6728 based on Foata normal form. 36/16999 useless extension candidates. Maximal degree in co-relation 53374. Up to 11970 conditions per place. [2024-11-09 02:42:22,362 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 135 selfloop transitions, 8 changer transitions 18/162 dead transitions. [2024-11-09 02:42:22,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 162 transitions, 1498 flow [2024-11-09 02:42:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:22,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-11-09 02:42:22,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-11-09 02:42:22,364 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 816 flow. Second operand 5 states and 112 transitions. [2024-11-09 02:42:22,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 162 transitions, 1498 flow [2024-11-09 02:42:22,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 162 transitions, 1452 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:22,420 INFO L231 Difference]: Finished difference. Result has 97 places, 99 transitions, 876 flow [2024-11-09 02:42:22,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=876, PETRI_PLACES=97, PETRI_TRANSITIONS=99} [2024-11-09 02:42:22,421 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-11-09 02:42:22,421 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 99 transitions, 876 flow [2024-11-09 02:42:22,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:22,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:22,421 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:22,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 02:42:22,421 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:22,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash -224367562, now seen corresponding path program 2 times [2024-11-09 02:42:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450642185] [2024-11-09 02:42:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 02:42:22,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:22,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450642185] [2024-11-09 02:42:22,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450642185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:22,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:22,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:22,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499420254] [2024-11-09 02:42:22,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:22,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:22,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:22,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:22,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:22,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 99 transitions, 876 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:22,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:22,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:22,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:25,870 INFO L124 PetriNetUnfolderBase]: 12026/17420 cut-off events. [2024-11-09 02:42:25,871 INFO L125 PetriNetUnfolderBase]: For 43566/43566 co-relation queries the response was YES. [2024-11-09 02:42:26,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54235 conditions, 17420 events. 12026/17420 cut-off events. For 43566/43566 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 99301 event pairs, 4729 based on Foata normal form. 60/17480 useless extension candidates. Maximal degree in co-relation 54201. Up to 13430 conditions per place. [2024-11-09 02:42:26,065 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 120 selfloop transitions, 16 changer transitions 18/155 dead transitions. [2024-11-09 02:42:26,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 155 transitions, 1412 flow [2024-11-09 02:42:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-09 02:42:26,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-11-09 02:42:26,067 INFO L175 Difference]: Start difference. First operand has 97 places, 99 transitions, 876 flow. Second operand 5 states and 114 transitions. [2024-11-09 02:42:26,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 155 transitions, 1412 flow [2024-11-09 02:42:26,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 155 transitions, 1391 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:26,131 INFO L231 Difference]: Finished difference. Result has 99 places, 98 transitions, 890 flow [2024-11-09 02:42:26,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=890, PETRI_PLACES=99, PETRI_TRANSITIONS=98} [2024-11-09 02:42:26,132 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-11-09 02:42:26,132 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 98 transitions, 890 flow [2024-11-09 02:42:26,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:26,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:26,132 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:26,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 02:42:26,133 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:26,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1528361558, now seen corresponding path program 3 times [2024-11-09 02:42:26,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:26,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146712414] [2024-11-09 02:42:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:26,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 02:42:26,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:26,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146712414] [2024-11-09 02:42:26,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146712414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:26,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:26,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:26,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811588977] [2024-11-09 02:42:26,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:26,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:26,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:26,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:26,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:26,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:26,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 98 transitions, 890 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:26,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:26,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:26,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:28,951 INFO L124 PetriNetUnfolderBase]: 11564/16740 cut-off events. [2024-11-09 02:42:28,952 INFO L125 PetriNetUnfolderBase]: For 44058/44058 co-relation queries the response was YES. [2024-11-09 02:42:29,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52661 conditions, 16740 events. 11564/16740 cut-off events. For 44058/44058 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 94166 event pairs, 4423 based on Foata normal form. 36/16776 useless extension candidates. Maximal degree in co-relation 52627. Up to 12939 conditions per place. [2024-11-09 02:42:29,041 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 117 selfloop transitions, 16 changer transitions 17/151 dead transitions. [2024-11-09 02:42:29,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 151 transitions, 1396 flow [2024-11-09 02:42:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-11-09 02:42:29,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-11-09 02:42:29,043 INFO L175 Difference]: Start difference. First operand has 99 places, 98 transitions, 890 flow. Second operand 5 states and 112 transitions. [2024-11-09 02:42:29,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 151 transitions, 1396 flow [2024-11-09 02:42:29,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 151 transitions, 1380 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:29,130 INFO L231 Difference]: Finished difference. Result has 102 places, 96 transitions, 911 flow [2024-11-09 02:42:29,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=911, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2024-11-09 02:42:29,131 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-11-09 02:42:29,131 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 911 flow [2024-11-09 02:42:29,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:29,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:29,132 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:29,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 02:42:29,132 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:29,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:29,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1735169550, now seen corresponding path program 4 times [2024-11-09 02:42:29,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:29,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843069118] [2024-11-09 02:42:29,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:29,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 02:42:29,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843069118] [2024-11-09 02:42:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843069118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:29,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:29,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361639316] [2024-11-09 02:42:29,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:29,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:29,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:29,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:29,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:29,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:29,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:29,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:29,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:29,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:32,682 INFO L124 PetriNetUnfolderBase]: 15841/22702 cut-off events. [2024-11-09 02:42:32,682 INFO L125 PetriNetUnfolderBase]: For 63061/63061 co-relation queries the response was YES. [2024-11-09 02:42:32,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71720 conditions, 22702 events. 15841/22702 cut-off events. For 63061/63061 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 132540 event pairs, 5764 based on Foata normal form. 1/22703 useless extension candidates. Maximal degree in co-relation 71684. Up to 10492 conditions per place. [2024-11-09 02:42:32,855 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 148 selfloop transitions, 32 changer transitions 7/188 dead transitions. [2024-11-09 02:42:32,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 188 transitions, 1864 flow [2024-11-09 02:42:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-11-09 02:42:32,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-09 02:42:32,857 INFO L175 Difference]: Start difference. First operand has 102 places, 96 transitions, 911 flow. Second operand 5 states and 133 transitions. [2024-11-09 02:42:32,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 188 transitions, 1864 flow [2024-11-09 02:42:32,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 188 transitions, 1836 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-09 02:42:32,955 INFO L231 Difference]: Finished difference. Result has 107 places, 113 transitions, 1216 flow [2024-11-09 02:42:32,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1216, PETRI_PLACES=107, PETRI_TRANSITIONS=113} [2024-11-09 02:42:32,955 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 64 predicate places. [2024-11-09 02:42:32,956 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 113 transitions, 1216 flow [2024-11-09 02:42:32,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:32,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:32,956 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:32,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 02:42:32,956 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:42:32,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1994734980, now seen corresponding path program 5 times [2024-11-09 02:42:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:32,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149040402] [2024-11-09 02:42:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:32,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 02:42:33,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:33,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149040402] [2024-11-09 02:42:33,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149040402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:33,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:33,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433683079] [2024-11-09 02:42:33,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:33,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:33,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:33,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:33,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:33,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:33,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 113 transitions, 1216 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:33,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:33,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:33,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:36,321 INFO L124 PetriNetUnfolderBase]: 15702/22448 cut-off events. [2024-11-09 02:42:36,322 INFO L125 PetriNetUnfolderBase]: For 82387/82387 co-relation queries the response was YES. [2024-11-09 02:42:36,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76101 conditions, 22448 events. 15702/22448 cut-off events. For 82387/82387 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 129733 event pairs, 6699 based on Foata normal form. 1/22449 useless extension candidates. Maximal degree in co-relation 76063. Up to 10651 conditions per place. [2024-11-09 02:42:36,537 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 144 selfloop transitions, 27 changer transitions 7/179 dead transitions. [2024-11-09 02:42:36,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 179 transitions, 1957 flow [2024-11-09 02:42:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-09 02:42:36,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-11-09 02:42:36,539 INFO L175 Difference]: Start difference. First operand has 107 places, 113 transitions, 1216 flow. Second operand 5 states and 121 transitions. [2024-11-09 02:42:36,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 179 transitions, 1957 flow [2024-11-09 02:42:36,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 179 transitions, 1925 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-11-09 02:42:36,647 INFO L231 Difference]: Finished difference. Result has 113 places, 119 transitions, 1371 flow [2024-11-09 02:42:36,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1371, PETRI_PLACES=113, PETRI_TRANSITIONS=119} [2024-11-09 02:42:36,647 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2024-11-09 02:42:36,647 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 119 transitions, 1371 flow [2024-11-09 02:42:36,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:36,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:36,648 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:36,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 02:42:36,648 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)] === [2024-11-09 02:42:36,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:36,648 INFO L85 PathProgramCache]: Analyzing trace with hash 586143292, now seen corresponding path program 6 times [2024-11-09 02:42:36,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:36,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134876291] [2024-11-09 02:42:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:36,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 02:42:37,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:37,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134876291] [2024-11-09 02:42:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134876291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:37,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:37,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:42:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250483158] [2024-11-09 02:42:37,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:37,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:42:37,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:37,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:42:37,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:42:37,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:37,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 119 transitions, 1371 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:37,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:37,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:37,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:39,889 INFO L124 PetriNetUnfolderBase]: 15569/22226 cut-off events. [2024-11-09 02:42:39,889 INFO L125 PetriNetUnfolderBase]: For 91309/91309 co-relation queries the response was YES. [2024-11-09 02:42:40,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77971 conditions, 22226 events. 15569/22226 cut-off events. For 91309/91309 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 127843 event pairs, 9447 based on Foata normal form. 1/22227 useless extension candidates. Maximal degree in co-relation 77930. Up to 17557 conditions per place. [2024-11-09 02:42:40,214 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 143 selfloop transitions, 15 changer transitions 7/166 dead transitions. [2024-11-09 02:42:40,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 166 transitions, 1932 flow [2024-11-09 02:42:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:42:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:42:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-11-09 02:42:40,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4326530612244898 [2024-11-09 02:42:40,215 INFO L175 Difference]: Start difference. First operand has 113 places, 119 transitions, 1371 flow. Second operand 5 states and 106 transitions. [2024-11-09 02:42:40,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 166 transitions, 1932 flow [2024-11-09 02:42:40,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 166 transitions, 1885 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-09 02:42:40,411 INFO L231 Difference]: Finished difference. Result has 116 places, 121 transitions, 1393 flow [2024-11-09 02:42:40,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1393, PETRI_PLACES=116, PETRI_TRANSITIONS=121} [2024-11-09 02:42:40,411 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-11-09 02:42:40,412 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 121 transitions, 1393 flow [2024-11-09 02:42:40,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:42:40,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:40,412 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:40,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 02:42:40,412 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)] === [2024-11-09 02:42:40,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:40,413 INFO L85 PathProgramCache]: Analyzing trace with hash 789509115, now seen corresponding path program 1 times [2024-11-09 02:42:40,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:40,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047039619] [2024-11-09 02:42:40,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:40,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 02:42:40,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:40,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047039619] [2024-11-09 02:42:40,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047039619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:40,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:40,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:40,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671314088] [2024-11-09 02:42:40,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:40,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:40,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:40,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:40,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:40,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:40,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 1393 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 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) [2024-11-09 02:42:40,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:40,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:40,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:42:43,371 INFO L124 PetriNetUnfolderBase]: 15372/21942 cut-off events. [2024-11-09 02:42:43,371 INFO L125 PetriNetUnfolderBase]: For 103376/103376 co-relation queries the response was YES. [2024-11-09 02:42:43,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76096 conditions, 21942 events. 15372/21942 cut-off events. For 103376/103376 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 125778 event pairs, 4589 based on Foata normal form. 137/22079 useless extension candidates. Maximal degree in co-relation 76054. Up to 15091 conditions per place. [2024-11-09 02:42:43,589 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 141 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-11-09 02:42:43,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 158 transitions, 1814 flow [2024-11-09 02:42:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:42:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:42:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-09 02:42:43,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:42:43,590 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 1393 flow. Second operand 4 states and 98 transitions. [2024-11-09 02:42:43,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 158 transitions, 1814 flow [2024-11-09 02:42:43,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 158 transitions, 1770 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-09 02:42:43,776 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 1336 flow [2024-11-09 02:42:43,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1336, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2024-11-09 02:42:43,777 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-11-09 02:42:43,777 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 1336 flow [2024-11-09 02:42:43,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 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) [2024-11-09 02:42:43,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:42:43,777 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:42:43,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 02:42:43,777 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)] === [2024-11-09 02:42:43,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:42:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash 570326511, now seen corresponding path program 1 times [2024-11-09 02:42:43,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:42:43,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417261683] [2024-11-09 02:42:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:42:43,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:42:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:42:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 02:42:43,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:42:43,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417261683] [2024-11-09 02:42:43,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417261683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:42:43,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:42:43,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:42:43,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455574961] [2024-11-09 02:42:43,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:42:43,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:42:43,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:42:43,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:42:43,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:42:43,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2024-11-09 02:42:43,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 118 transitions, 1336 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 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) [2024-11-09 02:42:43,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:42:43,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2024-11-09 02:42:43,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand