./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.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/popl20-more-buffer-mult3.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 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:47:09,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:47:09,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:47:09,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:47:09,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:47:09,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:47:09,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:47:09,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:47:09,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:47:09,179 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:47:09,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:47:09,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:47:09,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:47:09,182 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:47:09,182 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:47:09,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:47:09,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:47:09,183 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:47:09,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:47:09,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:47:09,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:47:09,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:47:09,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:47:09,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:47:09,189 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:47:09,189 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:47:09,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:47:09,189 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:47:09,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:47:09,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:47:09,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:47:09,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:47:09,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:47:09,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:47:09,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:47:09,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:47:09,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:47:09,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:47:09,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:47:09,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:47:09,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:47:09,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:47:09,194 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2024-11-09 02:47:09,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:47:09,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:47:09,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:47:09,497 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:47:09,498 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:47:09,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-09 02:47:10,963 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:47:11,138 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:47:11,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-09 02:47:11,148 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f15234e1/fe139a80db454155a25b9681c330b1be/FLAGa1de692a5 [2024-11-09 02:47:11,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f15234e1/fe139a80db454155a25b9681c330b1be [2024-11-09 02:47:11,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:47:11,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:47:11,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:47:11,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:47:11,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:47:11,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1490d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11, skipping insertion in model container [2024-11-09 02:47:11,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:47:11,785 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c[4270,4283] [2024-11-09 02:47:11,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:47:11,814 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:47:11,848 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c[4270,4283] [2024-11-09 02:47:11,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:47:11,874 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:47:11,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11 WrapperNode [2024-11-09 02:47:11,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:47:11,876 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:47:11,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:47:11,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:47:11,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,915 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 296 [2024-11-09 02:47:11,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:47:11,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:47:11,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:47:11,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:47:11,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,932 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,959 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-09 02:47:11,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:11,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:47:11,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:47:11,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:47:11,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:47:11,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (1/1) ... [2024-11-09 02:47:12,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:47:12,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:47:12,040 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 02:47:12,043 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 02:47:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:47:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:47:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:47:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:47:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:47:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:47:12,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:47:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:47:12,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:47:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:47:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:47:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 02:47:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 02:47:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:47:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:47:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:47:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:47:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:47:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:47:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:47:12,100 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 02:47:12,282 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:47:12,285 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:47:12,710 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:47:12,711 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:47:13,089 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:47:13,090 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:47:13,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:47:13 BoogieIcfgContainer [2024-11-09 02:47:13,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:47:13,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:47:13,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:47:13,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:47:13,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:47:11" (1/3) ... [2024-11-09 02:47:13,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452c1af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:47:13, skipping insertion in model container [2024-11-09 02:47:13,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:47:11" (2/3) ... [2024-11-09 02:47:13,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452c1af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:47:13, skipping insertion in model container [2024-11-09 02:47:13,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:47:13" (3/3) ... [2024-11-09 02:47:13,100 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2024-11-09 02:47:13,119 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:47:13,119 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:47:13,119 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:47:13,214 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 02:47:13,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 50 transitions, 128 flow [2024-11-09 02:47:13,301 INFO L124 PetriNetUnfolderBase]: 6/46 cut-off events. [2024-11-09 02:47:13,301 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:47:13,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 6/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-09 02:47:13,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 50 transitions, 128 flow [2024-11-09 02:47:13,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 45 transitions, 114 flow [2024-11-09 02:47:13,325 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:47:13,336 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;@396cd55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:47:13,336 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:47:13,360 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:47:13,361 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2024-11-09 02:47:13,361 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:47:13,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:13,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:13,362 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:13,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:13,367 INFO L85 PathProgramCache]: Analyzing trace with hash -616314390, now seen corresponding path program 1 times [2024-11-09 02:47:13,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:13,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95701150] [2024-11-09 02:47:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:13,762 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 02:47:13,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:13,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95701150] [2024-11-09 02:47:13,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95701150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:13,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:13,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:47:13,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593590673] [2024-11-09 02:47:13,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:13,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:47:13,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:13,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:47:13,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:47:13,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-09 02:47:13,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 02:47:13,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:13,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-09 02:47:13,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:14,444 INFO L124 PetriNetUnfolderBase]: 2407/3722 cut-off events. [2024-11-09 02:47:14,445 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-11-09 02:47:14,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6991 conditions, 3722 events. 2407/3722 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21488 event pairs, 472 based on Foata normal form. 1/3532 useless extension candidates. Maximal degree in co-relation 6303. Up to 2067 conditions per place. [2024-11-09 02:47:14,480 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 41 selfloop transitions, 3 changer transitions 1/62 dead transitions. [2024-11-09 02:47:14,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 253 flow [2024-11-09 02:47:14,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:47:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:47:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-09 02:47:14,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2024-11-09 02:47:14,496 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 114 flow. Second operand 3 states and 109 transitions. [2024-11-09 02:47:14,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 253 flow [2024-11-09 02:47:14,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 227 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-09 02:47:14,510 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 117 flow [2024-11-09 02:47:14,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-11-09 02:47:14,518 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-09 02:47:14,518 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 117 flow [2024-11-09 02:47:14,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 02:47:14,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:14,519 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:14,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:47:14,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:14,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:14,520 INFO L85 PathProgramCache]: Analyzing trace with hash 551345829, now seen corresponding path program 1 times [2024-11-09 02:47:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:14,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864952737] [2024-11-09 02:47:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:14,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:14,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864952737] [2024-11-09 02:47:14,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864952737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:14,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:14,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:47:14,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888839580] [2024-11-09 02:47:14,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:14,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:47:14,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:14,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:47:14,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:47:14,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-09 02:47:14,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 02:47:14,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:14,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-09 02:47:14,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:15,218 INFO L124 PetriNetUnfolderBase]: 2668/4085 cut-off events. [2024-11-09 02:47:15,218 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2024-11-09 02:47:15,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8437 conditions, 4085 events. 2668/4085 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24304 event pairs, 761 based on Foata normal form. 116/3972 useless extension candidates. Maximal degree in co-relation 3131. Up to 2321 conditions per place. [2024-11-09 02:47:15,245 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 50 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-11-09 02:47:15,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 279 flow [2024-11-09 02:47:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:47:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:47:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-09 02:47:15,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7533333333333333 [2024-11-09 02:47:15,250 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 117 flow. Second operand 3 states and 113 transitions. [2024-11-09 02:47:15,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 279 flow [2024-11-09 02:47:15,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 69 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:15,255 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 128 flow [2024-11-09 02:47:15,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2024-11-09 02:47:15,257 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-11-09 02:47:15,257 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 128 flow [2024-11-09 02:47:15,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 02:47:15,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:15,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:15,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:47:15,258 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:15,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash -74657177, now seen corresponding path program 1 times [2024-11-09 02:47:15,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:15,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458572514] [2024-11-09 02:47:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:15,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:47:15,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:15,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458572514] [2024-11-09 02:47:15,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458572514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:15,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:15,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:47:15,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498507012] [2024-11-09 02:47:15,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:15,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:47:15,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:15,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:47:15,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:47:15,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-09 02:47:15,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 02:47:15,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:15,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-09 02:47:15,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:15,950 INFO L124 PetriNetUnfolderBase]: 2976/4754 cut-off events. [2024-11-09 02:47:15,951 INFO L125 PetriNetUnfolderBase]: For 1581/1613 co-relation queries the response was YES. [2024-11-09 02:47:15,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10200 conditions, 4754 events. 2976/4754 cut-off events. For 1581/1613 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30488 event pairs, 955 based on Foata normal form. 77/4655 useless extension candidates. Maximal degree in co-relation 4642. Up to 2600 conditions per place. [2024-11-09 02:47:15,984 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 50 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-11-09 02:47:15,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 295 flow [2024-11-09 02:47:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:47:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:47:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-09 02:47:15,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.74 [2024-11-09 02:47:15,989 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 128 flow. Second operand 3 states and 111 transitions. [2024-11-09 02:47:15,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 295 flow [2024-11-09 02:47:15,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:15,993 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 140 flow [2024-11-09 02:47:15,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-11-09 02:47:15,995 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-09 02:47:15,995 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 140 flow [2024-11-09 02:47:15,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 02:47:15,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:15,996 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:15,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:47:15,997 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:15,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash 927011944, now seen corresponding path program 1 times [2024-11-09 02:47:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:15,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670445139] [2024-11-09 02:47:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:16,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:16,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670445139] [2024-11-09 02:47:16,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670445139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:16,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:16,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:47:16,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194898973] [2024-11-09 02:47:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:16,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:47:16,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:16,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:47:16,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:47:16,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-09 02:47:16,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:16,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:16,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-09 02:47:16,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:16,784 INFO L124 PetriNetUnfolderBase]: 3553/5584 cut-off events. [2024-11-09 02:47:16,784 INFO L125 PetriNetUnfolderBase]: For 2409/2492 co-relation queries the response was YES. [2024-11-09 02:47:16,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12767 conditions, 5584 events. 3553/5584 cut-off events. For 2409/2492 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 36990 event pairs, 2675 based on Foata normal form. 107/5340 useless extension candidates. Maximal degree in co-relation 6208. Up to 4009 conditions per place. [2024-11-09 02:47:16,816 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-11-09 02:47:16,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 75 transitions, 331 flow [2024-11-09 02:47:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:47:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:47:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-09 02:47:16,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.685 [2024-11-09 02:47:16,820 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 140 flow. Second operand 4 states and 137 transitions. [2024-11-09 02:47:16,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 75 transitions, 331 flow [2024-11-09 02:47:16,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:16,823 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 158 flow [2024-11-09 02:47:16,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-09 02:47:16,825 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-09 02:47:16,826 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 158 flow [2024-11-09 02:47:16,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:16,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:16,826 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:16,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:47:16,827 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:16,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:16,828 INFO L85 PathProgramCache]: Analyzing trace with hash 15558900, now seen corresponding path program 1 times [2024-11-09 02:47:16,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:16,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438734801] [2024-11-09 02:47:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:16,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:16,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438734801] [2024-11-09 02:47:16,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438734801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:16,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:16,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:47:16,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501466751] [2024-11-09 02:47:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:16,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:47:16,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:16,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:47:16,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:47:16,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-09 02:47:16,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:16,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:16,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-09 02:47:16,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:17,682 INFO L124 PetriNetUnfolderBase]: 4269/6973 cut-off events. [2024-11-09 02:47:17,683 INFO L125 PetriNetUnfolderBase]: For 3095/3187 co-relation queries the response was YES. [2024-11-09 02:47:17,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15793 conditions, 6973 events. 4269/6973 cut-off events. For 3095/3187 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 49468 event pairs, 3295 based on Foata normal form. 146/6691 useless extension candidates. Maximal degree in co-relation 13257. Up to 4867 conditions per place. [2024-11-09 02:47:17,727 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 54 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-11-09 02:47:17,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 346 flow [2024-11-09 02:47:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:47:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:47:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-09 02:47:17,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-09 02:47:17,730 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 158 flow. Second operand 4 states and 135 transitions. [2024-11-09 02:47:17,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 346 flow [2024-11-09 02:47:17,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 342 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:17,738 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 177 flow [2024-11-09 02:47:17,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-09 02:47:17,740 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-09 02:47:17,742 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 177 flow [2024-11-09 02:47:17,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:17,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:17,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:17,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:47:17,743 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:17,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:17,744 INFO L85 PathProgramCache]: Analyzing trace with hash 411927857, now seen corresponding path program 1 times [2024-11-09 02:47:17,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:17,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125105185] [2024-11-09 02:47:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:17,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:47:18,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:18,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125105185] [2024-11-09 02:47:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125105185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:18,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:18,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:47:18,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498276827] [2024-11-09 02:47:18,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:18,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:47:18,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:47:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:47:18,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 02:47:18,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 02:47:18,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:18,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 02:47:18,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:20,088 INFO L124 PetriNetUnfolderBase]: 10517/16212 cut-off events. [2024-11-09 02:47:20,089 INFO L125 PetriNetUnfolderBase]: For 6388/6420 co-relation queries the response was YES. [2024-11-09 02:47:20,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37418 conditions, 16212 events. 10517/16212 cut-off events. For 6388/6420 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 113842 event pairs, 897 based on Foata normal form. 372/15755 useless extension candidates. Maximal degree in co-relation 30766. Up to 7997 conditions per place. [2024-11-09 02:47:20,196 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 117 selfloop transitions, 13 changer transitions 3/145 dead transitions. [2024-11-09 02:47:20,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 145 transitions, 697 flow [2024-11-09 02:47:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:47:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:47:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-11-09 02:47:20,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6275 [2024-11-09 02:47:20,199 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 177 flow. Second operand 8 states and 251 transitions. [2024-11-09 02:47:20,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 145 transitions, 697 flow [2024-11-09 02:47:20,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 145 transitions, 692 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:20,206 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 275 flow [2024-11-09 02:47:20,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=275, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-11-09 02:47:20,207 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2024-11-09 02:47:20,207 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 275 flow [2024-11-09 02:47:20,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 02:47:20,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:20,208 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:20,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:47:20,208 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:20,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2139041555, now seen corresponding path program 2 times [2024-11-09 02:47:20,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:20,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162842478] [2024-11-09 02:47:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:20,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:47:20,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162842478] [2024-11-09 02:47:20,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162842478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:20,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:20,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:47:20,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565529216] [2024-11-09 02:47:20,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:20,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:47:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:20,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:47:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:47:20,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 02:47:20,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 02:47:20,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:20,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 02:47:20,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:22,298 INFO L124 PetriNetUnfolderBase]: 10657/16648 cut-off events. [2024-11-09 02:47:22,299 INFO L125 PetriNetUnfolderBase]: For 15820/15836 co-relation queries the response was YES. [2024-11-09 02:47:22,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45115 conditions, 16648 events. 10657/16648 cut-off events. For 15820/15836 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 118136 event pairs, 2595 based on Foata normal form. 60/16577 useless extension candidates. Maximal degree in co-relation 36624. Up to 12299 conditions per place. [2024-11-09 02:47:22,438 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 73 selfloop transitions, 12 changer transitions 19/116 dead transitions. [2024-11-09 02:47:22,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 116 transitions, 636 flow [2024-11-09 02:47:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:47:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:47:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-11-09 02:47:22,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-09 02:47:22,440 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 275 flow. Second operand 6 states and 186 transitions. [2024-11-09 02:47:22,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 116 transitions, 636 flow [2024-11-09 02:47:22,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 116 transitions, 634 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 02:47:22,463 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 336 flow [2024-11-09 02:47:22,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-11-09 02:47:22,464 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-09 02:47:22,464 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 336 flow [2024-11-09 02:47:22,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 02:47:22,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:22,465 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:22,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:47:22,466 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:22,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash 763173598, now seen corresponding path program 1 times [2024-11-09 02:47:22,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:22,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660127451] [2024-11-09 02:47:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:22,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:47:22,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660127451] [2024-11-09 02:47:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660127451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:22,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:22,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:47:22,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327314576] [2024-11-09 02:47:22,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:22,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:47:22,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:47:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:47:23,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 02:47:23,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:47:23,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:23,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 02:47:23,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:24,693 INFO L124 PetriNetUnfolderBase]: 11706/17921 cut-off events. [2024-11-09 02:47:24,694 INFO L125 PetriNetUnfolderBase]: For 24213/25724 co-relation queries the response was YES. [2024-11-09 02:47:24,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50772 conditions, 17921 events. 11706/17921 cut-off events. For 24213/25724 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 129026 event pairs, 2229 based on Foata normal form. 882/17681 useless extension candidates. Maximal degree in co-relation 40782. Up to 14072 conditions per place. [2024-11-09 02:47:24,802 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 81 selfloop transitions, 15 changer transitions 12/123 dead transitions. [2024-11-09 02:47:24,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 123 transitions, 722 flow [2024-11-09 02:47:24,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:47:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:47:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-11-09 02:47:24,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5914285714285714 [2024-11-09 02:47:24,807 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 336 flow. Second operand 7 states and 207 transitions. [2024-11-09 02:47:24,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 123 transitions, 722 flow [2024-11-09 02:47:24,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 123 transitions, 694 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-09 02:47:24,846 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 398 flow [2024-11-09 02:47:24,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-11-09 02:47:24,849 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-11-09 02:47:24,849 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 398 flow [2024-11-09 02:47:24,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:47:24,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:24,853 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:24,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:47:24,854 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:24,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:24,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1730807046, now seen corresponding path program 2 times [2024-11-09 02:47:24,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:24,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926547473] [2024-11-09 02:47:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:24,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:47:25,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:25,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926547473] [2024-11-09 02:47:25,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926547473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:25,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:25,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:47:25,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662825114] [2024-11-09 02:47:25,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:25,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:47:25,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:25,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:47:25,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:47:25,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 02:47:25,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 398 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 02:47:25,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:25,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 02:47:25,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:27,712 INFO L124 PetriNetUnfolderBase]: 16160/24069 cut-off events. [2024-11-09 02:47:27,712 INFO L125 PetriNetUnfolderBase]: For 39282/41864 co-relation queries the response was YES. [2024-11-09 02:47:27,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73632 conditions, 24069 events. 16160/24069 cut-off events. For 39282/41864 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 170719 event pairs, 3669 based on Foata normal form. 778/24357 useless extension candidates. Maximal degree in co-relation 58715. Up to 19350 conditions per place. [2024-11-09 02:47:27,903 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 76 selfloop transitions, 43 changer transitions 14/149 dead transitions. [2024-11-09 02:47:27,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 149 transitions, 1167 flow [2024-11-09 02:47:27,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:47:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:47:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-11-09 02:47:27,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5828571428571429 [2024-11-09 02:47:27,904 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 398 flow. Second operand 7 states and 204 transitions. [2024-11-09 02:47:27,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 149 transitions, 1167 flow [2024-11-09 02:47:27,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 149 transitions, 1123 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:47:27,992 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 832 flow [2024-11-09 02:47:27,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=832, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-11-09 02:47:27,993 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 42 predicate places. [2024-11-09 02:47:27,993 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 832 flow [2024-11-09 02:47:27,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 02:47:27,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:27,994 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:27,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 02:47:27,994 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:27,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash 815492254, now seen corresponding path program 3 times [2024-11-09 02:47:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:27,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814843530] [2024-11-09 02:47:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:27,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:47:28,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:28,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814843530] [2024-11-09 02:47:28,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814843530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:28,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:28,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:47:28,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328211992] [2024-11-09 02:47:28,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:28,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:47:28,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:47:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:47:28,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 02:47:28,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 832 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 02:47:28,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:28,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 02:47:28,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:31,326 INFO L124 PetriNetUnfolderBase]: 18938/29096 cut-off events. [2024-11-09 02:47:31,327 INFO L125 PetriNetUnfolderBase]: For 53000/54077 co-relation queries the response was YES. [2024-11-09 02:47:31,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93399 conditions, 29096 events. 18938/29096 cut-off events. For 53000/54077 co-relation queries the response was YES. Maximal size of possible extension queue 1490. Compared 219636 event pairs, 4840 based on Foata normal form. 302/28870 useless extension candidates. Maximal degree in co-relation 76418. Up to 22545 conditions per place. [2024-11-09 02:47:31,655 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 77 selfloop transitions, 38 changer transitions 21/154 dead transitions. [2024-11-09 02:47:31,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 154 transitions, 1267 flow [2024-11-09 02:47:31,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:47:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:47:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-11-09 02:47:31,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-11-09 02:47:31,657 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 832 flow. Second operand 6 states and 188 transitions. [2024-11-09 02:47:31,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 154 transitions, 1267 flow [2024-11-09 02:47:31,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 154 transitions, 1227 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:31,795 INFO L231 Difference]: Finished difference. Result has 100 places, 104 transitions, 878 flow [2024-11-09 02:47:31,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=878, PETRI_PLACES=100, PETRI_TRANSITIONS=104} [2024-11-09 02:47:31,795 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-11-09 02:47:31,796 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 104 transitions, 878 flow [2024-11-09 02:47:31,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 02:47:31,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:31,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:31,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 02:47:31,796 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:31,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:31,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1741324984, now seen corresponding path program 4 times [2024-11-09 02:47:31,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:31,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62934339] [2024-11-09 02:47:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:31,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:32,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:32,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62934339] [2024-11-09 02:47:32,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62934339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:32,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:32,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:47:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034627610] [2024-11-09 02:47:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:32,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:47:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:32,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:47:32,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:47:32,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 02:47:32,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 104 transitions, 878 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:47:32,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:32,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 02:47:32,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:35,491 INFO L124 PetriNetUnfolderBase]: 18936/29200 cut-off events. [2024-11-09 02:47:35,491 INFO L125 PetriNetUnfolderBase]: For 62783/65576 co-relation queries the response was YES. [2024-11-09 02:47:35,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96068 conditions, 29200 events. 18936/29200 cut-off events. For 62783/65576 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 221702 event pairs, 4451 based on Foata normal form. 312/29013 useless extension candidates. Maximal degree in co-relation 79314. Up to 22741 conditions per place. [2024-11-09 02:47:35,767 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 92 selfloop transitions, 63 changer transitions 5/178 dead transitions. [2024-11-09 02:47:35,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 178 transitions, 1711 flow [2024-11-09 02:47:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:47:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:47:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-11-09 02:47:35,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5942857142857143 [2024-11-09 02:47:35,769 INFO L175 Difference]: Start difference. First operand has 100 places, 104 transitions, 878 flow. Second operand 7 states and 208 transitions. [2024-11-09 02:47:35,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 178 transitions, 1711 flow [2024-11-09 02:47:36,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 178 transitions, 1583 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-09 02:47:36,165 INFO L231 Difference]: Finished difference. Result has 104 places, 129 transitions, 1302 flow [2024-11-09 02:47:36,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1302, PETRI_PLACES=104, PETRI_TRANSITIONS=129} [2024-11-09 02:47:36,166 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 52 predicate places. [2024-11-09 02:47:36,166 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 129 transitions, 1302 flow [2024-11-09 02:47:36,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:47:36,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:36,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:36,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 02:47:36,167 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:47:36,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 121924336, now seen corresponding path program 5 times [2024-11-09 02:47:36,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:36,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313926711] [2024-11-09 02:47:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:36,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:47:36,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:36,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313926711] [2024-11-09 02:47:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313926711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:36,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:36,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:47:36,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438487396] [2024-11-09 02:47:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:36,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:47:36,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:47:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:47:36,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 02:47:36,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 129 transitions, 1302 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 02:47:36,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:36,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 02:47:36,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:40,588 INFO L124 PetriNetUnfolderBase]: 21771/32813 cut-off events. [2024-11-09 02:47:40,588 INFO L125 PetriNetUnfolderBase]: For 90930/94766 co-relation queries the response was YES. [2024-11-09 02:47:40,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119088 conditions, 32813 events. 21771/32813 cut-off events. For 90930/94766 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 251820 event pairs, 3150 based on Foata normal form. 1312/33334 useless extension candidates. Maximal degree in co-relation 98963. Up to 20636 conditions per place. [2024-11-09 02:47:40,865 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 122 selfloop transitions, 135 changer transitions 14/289 dead transitions. [2024-11-09 02:47:40,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 289 transitions, 3219 flow [2024-11-09 02:47:40,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:47:40,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:47:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-11-09 02:47:40,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.596 [2024-11-09 02:47:40,867 INFO L175 Difference]: Start difference. First operand has 104 places, 129 transitions, 1302 flow. Second operand 10 states and 298 transitions. [2024-11-09 02:47:40,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 289 transitions, 3219 flow [2024-11-09 02:47:41,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 289 transitions, 3100 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 02:47:41,139 INFO L231 Difference]: Finished difference. Result has 117 places, 205 transitions, 2685 flow [2024-11-09 02:47:41,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2685, PETRI_PLACES=117, PETRI_TRANSITIONS=205} [2024-11-09 02:47:41,140 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-11-09 02:47:41,140 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 205 transitions, 2685 flow [2024-11-09 02:47:41,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 02:47:41,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:41,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:41,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:47:41,141 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 2 more)] === [2024-11-09 02:47:41,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:41,141 INFO L85 PathProgramCache]: Analyzing trace with hash -348491218, now seen corresponding path program 6 times [2024-11-09 02:47:41,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:41,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802750988] [2024-11-09 02:47:41,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:41,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:47:41,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:41,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802750988] [2024-11-09 02:47:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802750988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:41,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:41,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:47:41,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300094853] [2024-11-09 02:47:41,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:41,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:47:41,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:41,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:47:41,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:47:41,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 02:47:41,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 205 transitions, 2685 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:47:41,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:41,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 02:47:41,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:46,519 INFO L124 PetriNetUnfolderBase]: 26113/39693 cut-off events. [2024-11-09 02:47:46,519 INFO L125 PetriNetUnfolderBase]: For 145791/150051 co-relation queries the response was YES. [2024-11-09 02:47:46,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156134 conditions, 39693 events. 26113/39693 cut-off events. For 145791/150051 co-relation queries the response was YES. Maximal size of possible extension queue 2240. Compared 315561 event pairs, 6028 based on Foata normal form. 1476/40123 useless extension candidates. Maximal degree in co-relation 126059. Up to 25695 conditions per place. [2024-11-09 02:47:46,987 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 160 selfloop transitions, 150 changer transitions 7/335 dead transitions. [2024-11-09 02:47:46,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 335 transitions, 4387 flow [2024-11-09 02:47:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:47:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:47:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 273 transitions. [2024-11-09 02:47:46,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6066666666666667 [2024-11-09 02:47:46,990 INFO L175 Difference]: Start difference. First operand has 117 places, 205 transitions, 2685 flow. Second operand 9 states and 273 transitions. [2024-11-09 02:47:46,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 335 transitions, 4387 flow [2024-11-09 02:47:48,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 335 transitions, 4354 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-09 02:47:48,044 INFO L231 Difference]: Finished difference. Result has 129 places, 246 transitions, 3690 flow [2024-11-09 02:47:48,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3690, PETRI_PLACES=129, PETRI_TRANSITIONS=246} [2024-11-09 02:47:48,045 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 77 predicate places. [2024-11-09 02:47:48,045 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 246 transitions, 3690 flow [2024-11-09 02:47:48,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:47:48,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:47:48,046 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:47:48,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 02:47:48,049 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 2 more)] === [2024-11-09 02:47:48,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:47:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1989263922, now seen corresponding path program 7 times [2024-11-09 02:47:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:47:48,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122916328] [2024-11-09 02:47:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:47:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:47:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:47:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:47:48,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:47:48,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122916328] [2024-11-09 02:47:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122916328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:47:48,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:47:48,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:47:48,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146857603] [2024-11-09 02:47:48,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:47:48,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:47:48,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:47:48,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:47:48,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:47:48,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-09 02:47:48,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 246 transitions, 3690 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:47:48,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:47:48,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-09 02:47:48,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:47:56,531 INFO L124 PetriNetUnfolderBase]: 43591/64942 cut-off events. [2024-11-09 02:47:56,531 INFO L125 PetriNetUnfolderBase]: For 261131/269536 co-relation queries the response was YES. [2024-11-09 02:47:57,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265399 conditions, 64942 events. 43591/64942 cut-off events. For 261131/269536 co-relation queries the response was YES. Maximal size of possible extension queue 3350. Compared 523119 event pairs, 9582 based on Foata normal form. 1722/65243 useless extension candidates. Maximal degree in co-relation 213783. Up to 41087 conditions per place. [2024-11-09 02:47:57,355 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 197 selfloop transitions, 179 changer transitions 9/405 dead transitions. [2024-11-09 02:47:57,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 405 transitions, 5725 flow [2024-11-09 02:47:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:47:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:47:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 282 transitions. [2024-11-09 02:47:57,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-11-09 02:47:57,357 INFO L175 Difference]: Start difference. First operand has 129 places, 246 transitions, 3690 flow. Second operand 9 states and 282 transitions. [2024-11-09 02:47:57,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 405 transitions, 5725 flow [2024-11-09 02:48:00,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 405 transitions, 5630 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-09 02:48:00,123 INFO L231 Difference]: Finished difference. Result has 141 places, 294 transitions, 4948 flow [2024-11-09 02:48:00,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3618, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4948, PETRI_PLACES=141, PETRI_TRANSITIONS=294} [2024-11-09 02:48:00,123 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 89 predicate places. [2024-11-09 02:48:00,124 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 294 transitions, 4948 flow [2024-11-09 02:48:00,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:00,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:00,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:00,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 02:48:00,125 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 2 more)] === [2024-11-09 02:48:00,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:00,125 INFO L85 PathProgramCache]: Analyzing trace with hash 152012264, now seen corresponding path program 8 times [2024-11-09 02:48:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:00,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373277714] [2024-11-09 02:48:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:00,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:48:00,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:00,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373277714] [2024-11-09 02:48:00,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373277714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:48:00,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:48:00,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:48:00,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149489569] [2024-11-09 02:48:00,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:00,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:48:00,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:00,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:48:00,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:48:00,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-09 02:48:00,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 294 transitions, 4948 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:48:00,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:00,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-09 02:48:00,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand